db2 7.1不能连接服务器的问题

wangjingyue 2003-09-15 11:00:47

DB27.1前几天刚刚装好的，现在在db2cmd->下运行connect to ** user ** using ** 出现报错：（SQL1334N The database server cannot be used to route a remote request to a second database server in this configuration.）请问哪位高手知道这是由于什么原因引起的！
谢谢！

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prowastrel 2003-09-15

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试一下：
1。db2 uncatalog db dbname
2。进db2cca，配置dbname
3。重新connect

问：我正在 NT 上运行 DB2 V7 的黄金代码。我以为联合 DB 支持就意味着我可以连接不同 DB2 数据库中的两个表。我尝试执行该操作，但没有成功。当我试图创建服务器时，我遇到了各种各样的语法错误。有人这样连接成功了吗答：是的，这是可以支持的。如果您没有成功，我建议您查看 Admin Guide 中略述的有关联合数据库支持的步骤。然而，我通过使用控制中心来定义必要的别名等。您可能已经这样做了，而此时特定的 SQL 可能让人头疼。这就需要 FDB 开发者进行分析。对于 V7 中的 FDB，SQL 限于只读操作。问：顾客在 LDAP 服务器上定义了大量用户。DB2 可以用 LDAP 服务器来认证这些用户吗答： LDAP 用于 DB2 中只是为了共享编目目录（即数据库和节点）。对于认证支持，我们只关注 Kerberos。问： DB2 版本 7.1 中“技术预览”部分的介绍中曾经提到过增量备份可是在发行的G.A. 代码或命令参考手册中都没有此特性。是不是该特性推迟发行了?什么时候才可能用上?（下一发行版?补丁程序包?九月份?) 答：在 DB2 V 7.1 未来的补丁程序包中将可用增量备份。问：当我试图将我的 DB2 v5 数据库恢复至具有 DB2 v7.1 的新服务器时，得到以下消息。 (4)RalIds1E C:\\db2 restore db cqmsloc1 from m:\db20616 在备份映像中指示的 SQL2548N 数据库代码页“850”同当前磁盘上所指示数据库代码页“437”有所不同。恢复操作失败。我试图切换 config.sys 为 850,437，但是却无济于事。劳驾哪位帮忙解决这个问题。答：我有两种克服该困难的办法，1. 在新机器上安装旧版本，先恢复，然后更新至新版本。 2. 创建一个同名数据库，设置欲设的代码页，然后进行恢复。问：客户要从 Oracle 移植到 DB2 UDB，而待移植项目之一就是序列 ID。但是，他们却发现 DB2 UDBV7 中的序列 ID 是在行插入时内部生成的，于是想要知道如何获得所插入行的 ID，以在其应用程序中显示。如果他们需要基于另一个唯一标识符来查询序列 ID 域，这看起来似乎就违背了序列号的用途，并且也增大了从 Oracle 移植的难度。对于插入到 V7 中的一行来说，检索其序列 ID 的方法是什么呢？谢谢。答：在 V7.1 中提供了一个新函数 IDENTITY_VAL_LOCAL()，它允许应用程序检索插入的 ID 值。这在发行说明中有文档记录。问：我已经在 Win98 中安装了 DB2 PE/RC。Oracle NET8 和 SQL*PLUS 也已经安装。我可以针对 Oracle 使用别名。请问是否支持这种配置？答：不应该这样。声明信中说得清清楚楚： “下列产品需要一套经许可的 DB2 EE 或 EEE 的副本”

PART I – 概览.........................................................................................................................11 第 1章 – DB2 Express-C是什么?..........................................................................................13 1.1免费开发、部署和分发… 无限制！...............................................................................13 1.2用户帮助和技术支持.....................................................................................................14 1.3 DB2服务器..................................................................................................................14 1.4 DB2客户端和驱动........................................................................................................14 1.5 应用程序开发的自由性.................................................................................................15 1.6 DB2 版本号与 DB2 版本分类........................................................................................16 1.7升级到其它的 DB2版本................................................................................................16 1.8 DB2 Express-C的维护.................................................................................................16 1.9相关免费软件................................................................................................................17 1.9.1 IBM数据工作室（Data Studio）...........................................................................17 1.9.2 DB2 Net Search Extender .....................................................................................17 1.9.3 Starter Toolkit for DB2 on Rails.............................................................................17 1.9.4 Web 2.0 Starter Toolkit for DB2 ............................................................................17 1.9.5 WebSphere Application Server – Community Edition............................................18 第 2章 – DB2相关特性和产品................................................................................................19 2.1 DB2 Express-C订购中包含的功能...............................................................................22 2.1.1 Fix packs补丁包...................................................................................................22 2.1.2高可用性灾难恢复（HADR） ................................................................................22 2.1.3数据复制（Data Replication）...............................................................................22 2.2 DB2 Express-C所不具备的功能...................................................................................23 2.2.1数据库分区............................................................................................................23 2.2.2连接集中器（Connection Concentrator ）.............................................................23 2.2.3 Geodetic Extender ................................................................................................23 2.2.4工作负载管理(Workload Management, WLM) .......................................................24 2.3 DB2相关收费产品........................................................................................................24 2.3.1 DB2连接（DB2 Connect）...................................................................................24 2.3.2 WebSphere Federation Server..............................................................................24 2.3.3 WebSphere Replication Server .............................................................................25 第 3章 – 安装 DB2..................................................................................................................27 3.1安装前提条件................................................................................................................27 3.2操作系统中的安装权限.................................................................................................27 3.3安装向导.......................................................................................................................27 3.4自动安装.......................................................................................................................31 实验 #1 安装DB2 Express-C，创建 SAMPLE数据库........................................................32 第 4章 – DB2的应用环境.......................................................................................................35 实验 #2 - 创建一个新的数据库............................................................................................43 4.1 DB2配置......................................................................................................................44 4.1.1 环境变量................................................................................................................44 4.1.2 数据库管理器配置文件(dbm cfg) ...........................................................................44 4.1.3 数据库配置文件（db cfg）....................................................................................46 4.1.4 DB2 概要文件注册表.............................................................................................47 4.2 DB2管理服务器...........................................................................................................48 实验 #3 – 实例、数据库和配置管理....................................................................................49 第 5章 – DB2工具..................................................................................................................51 5.1控制中心（Control Center）.........................................................................................52 5.2命令编辑器（Command Editor） .................................................................................55 5.3 SQL帮助向导（SQL Assist Wizard ）.........................................................................57 5.4 显示SQL按钮..............................................................................................................58 实验 #4 使用脚本填充EXPRESS数据库...........................................................................59 5.5 脚本..............................................................................................................................60 5.5.1 SQL脚本...............................................................................................................60 5.5.2操作系统（shell）脚本..........................................................................................61 实验 #5 为EXPRESS数据库创建一个安装脚本.................................................................62 5.6任务中心（Task Center ）...........................................................................................65 5.6.1工具目录（Tools Catalog）数据库........................................................................65 5.7 日志（Journal）...........................................................................................................66 5.8运行状况监视器（Health Monitor ）.............................................................................67 5.8.1运行状况中心（Health Center ）...........................................................................68 PART II – DB2 Express-C 数据库管......................................................................................71 第 6章 – DB2体系结构...........................................................................................................73 6.1 DB2进程模型...............................................................................................................73 6.2 DB2内存模型...............................................................................................................74 6.3 DB2存储模型...............................................................................................................75 6.3.1数据页和扩展数据块..............................................................................................75 6.3.2缓冲池...................................................................................................................76 6.3.3表空间...................................................................................................................77 第 7章 – DB2 客户端的连接....................................................................................................81 7.1 DB2 目录......................................................................................................................81 7.2 配置助手（Configuration Assistant ）..........................................................................82 7.2.1服务器端的安装要求..............................................................................................82 7.2.2 Setup required at the client 客户端的安装要求......................................................84 7.2.3建立客户端与服务器端概要文件............................................................................87 实验 #6 使用配置助手........................................................................................................90 第 8章 – 数据库对象...............................................................................................................93 8.1 模式..............................................................................................................................93 8.2表.................................................................................................................................93 8.2.1数据类型................................................................................................................93 8.2.2标识列...................................................................................................................96 8.2.3序列对象................................................................................................................96 8.2.4系统目录表............................................................................................................97 8.2.5已声明临时表.........................................................................................................97 实验 #7 创建一个数据表.....................................................................................................99 8.3视图............................................................................................................................101 8.4索引............................................................................................................................101 8.4.1 Design Advisor ....................................................................................................101 8.5参照完整性.................................................................................................................102 第 9章 – 数据迁移工具..........................................................................................................105 9.1 导出（EXPORT）工具...............................................................................................106 9.2 导入（IMPORT）工具................................................................................................106 9.3 使用 LOAD来导入......................................................................................................107 9.4 db2move 工具...........................................................................................................108 9.5 db2look 工具..............................................................................................................109 实验 #8 导出EXPRESS数据库的DDL............................................................................111 第 10章 – 数据库安全...........................................................................................................115 10.1 认证..........................................................................................................................116 10.2 授权..........................................................................................................................116 10.3 DBADM权限............................................................................................................118 10.4 PUBLIC 组...............................................................................................................119 10.5 GRANT和REVOKE语句 ........................................................................................119 10.6 查看授权和特权........................................................................................................119 10.7 关于组特权...............................................................................................................121 实验 #9 授予和撤销用户的权限........................................................................................122 第 11章 – 备份和恢复...........................................................................................................125 11.1 数据库的日志记录....................................................................................................125 11.2 日志的类型...............................................................................................................126 11.3 日志记录的类型.......................................................................................................126 11.3.1 循环日志记录 ....................................................................................................126 11.3.2 档案日志记录和日志保留...................................................................................127 11.4 从控制中心进行数据库日志记录...............................................................................127 11.5 日志记录的参数........................................................................................................129 11.6 数据库备份...............................................................................................................129 实验 #10 – 安排一个备份计划..........................................................................................131 11.7 数据库恢复...............................................................................................................133 11.7.1 恢复类型............................................................................................................133 11.7.2 数据库恢复........................................................................................................133 11.8 其他关于备份和恢复的操作......................................................................................134 第 12章 – 维护任务...............................................................................................................135 12.1 重组（REORG）、运行统计（RUNSTATS）、重绑定（REBIND）.......................135 12.1.1重组（REORG）命令........................................................................................135 12.1.2运行统计（RUNSTATS）命令 ..........................................................................136 12.1.3 绑定／重新绑定.................................................................................................136 12.1.4 在控制中心执行维护工作...................................................................................137 12.2 维护方式...................................................................................................................139 实验#11 – 配置自动维护.................................................................................................141 第 13章 – 并行与锁定...........................................................................................................143 13.1 事务（Transactions）..............................................................................................143 13.2 并行（Concurrency） ..............................................................................................143 13.3无并行控制导致的问题 .............................................................................................144 13.3.1丢失更新（Lost update）..................................................................................145 13.3.2未落实的读（Uncommitted read）....................................................................145 13.3.3不可重复读（Non-repeatable read）.................................................................146 13.3.4幻象（Phantom read）......................................................................................146 13.4隔离级别（Isolation Levels）...................................................................................147 13.4.1未落实的读........................................................................................................147 13.4.2游标稳定性........................................................................................................147 13.4.3读稳定性............................................................................................................148 13.4.4可重复读............................................................................................................148 13.4.5隔离级别对比.....................................................................................................148 13.4.6设定隔离级别.....................................................................................................149 13.5锁定升级...................................................................................................................150 13.6锁定监视...................................................................................................................151 13.7锁定等待...................................................................................................................151 13.8死锁的引发与侦测.....................................................................................................152 13.9并行与锁定的最佳实践：..........................................................................................153 PART III – DB2 Express-C应用程序开发............................................................................155 第 14章 –SQL PL 存储过程..................................................................................................157 14.1 IBM数据工作室（Data Studio）..............................................................................158 14.1.2在Data Studio中创建一个存储过程..................................................................159 14.2 SQL PL 存储过程基础..............................................................................................161 14.2.1存储过程的结构.................................................................................................161 14.2.2 可选的存储过程属性..........................................................................................162 14.2.3参数...................................................................................................................162 14.2.4 SQL PL存储过程中的注释................................................................................163 14.2.5 复合语句............................................................................................................163 14.2.6 变量声明............................................................................................................163 14.2.7 赋值语句............................................................................................................164 14.3 游标..........................................................................................................................164 14.4 流控制......................................................................................................................164 14.5 调用存储过程 ...........................................................................................................165 14.6 错误和情况处理器....................................................................................................166 14.7 动态SQL..................................................................................................................168 第 15章 – 直接插入 SQL 过程语言、触发器、用户定义函数（UDF）..................................169 15.1直接插入SQL PL .....................................................................................................169 15.2 触发器（Trigger）....................................................................................................170 15.2.1 触发器的类型 ....................................................................................................170 实验 #12 从控制中心创建一个触发器...............................................................................174 15.3 用户定义函数 (UDF).................................................................................................177 15.3.1 标量函数（Scalar function）.............................................................................177 15.3.2 表函数（Table function）..................................................................................178 实验 #13 使用IBM Data Studio创建用户定义函数（UDF）............................................179 第 16章 – DB2 pureXML......................................................................................................181 16.1 在数据库中使用XML................................................................................................181 16.2 XML数据库..............................................................................................................182 16.2.1 启用 XML的数据库............................................................................................182 16.2.2 原生 XML数据库...............................................................................................182 16.3 DB2中的XML..........................................................................................................183 16.3.1 pureXML 技术优势............................................................................................184 16.3.2 XPath基础........................................................................................................185 16.3.3 XQuery的定义..................................................................................................188 16.3.4 插入 XML文档...................................................................................................189 16.3.5 查询 XML数据...................................................................................................191 16.3.6 使用 SQL/XML执行联合操作............................................................................196 16.3.7 使用 XQuery执行联合操作................................................................................196 16.3.8 更新与删除操作.................................................................................................197 16.3.9 XML 索引.........................................................................................................198 实验 #14 - SQL/XML 和 XQuery.......................................................................................200 第 17章 – 使用 Java、PHP和 Ruby进行数据库应用开发...................................................201 17.1 Java应用程序开发...................................................................................................201 17.1.1 JDBC类型 2驱动程序.......................................................................................201 17.1.2 JDBC类型 4驱动程序.......................................................................................202 17.2 PHP应用程序开发...................................................................................................203 17.2.1 DB2为PHP提供的连接选项.............................................................................203 17.2.2 Zend Core for IBM.............................................................................................204 17.3 Ruby on Rails应用程序开发.....................................................................................206 17.3.1 Startup Toolkit for DB2 on Rails ........................................................................206 附录 A — 排除故障...............................................................................................................207 A.1 查找错误代码的更多信息...........................................................................................207 A.2 SQLCODE与SQLSTATE .........................................................................................208 A.3 DB2 管理通知日志.....................................................................................................208 A.4 db2diag.log................................................................................................................209 A.5 CLI追踪.....................................................................................................................209 A.6 DB2缺陷与补丁.........................................................................................................209 参考资源 ...............................................................................................................................210 网站..................................................................................................................................210 书籍..................................................................................................................................211

PostgreSQL是以加州大学伯克利分校计算机系开发的POSTGRES,现在已经更名为PostgreSQL. PostgreSQL支持大部分SQL标准并且提供了许多其它现代特性：复杂查询、外键、触发器、视图、事务完整性等。 PostgreSQL 是一个免费的对象-关系数据库服务器(数据库管理系统)，它在灵活的 BSD-风格许可证下发行。它提供了相对其他开放源代码数据库系统(比如 MySQL 和 Firebird)，和专有系统(比如 Oracle、Sybase、IBM 的 DB2 和 Microsoft SQL Server)之外的另一种选择。事实上， PostgreSQL 的特性覆盖了 SQL-2/SQL-92 和 SQL-3/SQL-99，首先，它包括了可以说是目前世界上最丰富的数据类型的支持，其中有些数据类型可以说连商业数据库都不具备，比如 IP 类型和几何类型等；其次，PostgreSQL 是全功能的自由软件数据库，很长时间以来，PostgreSQL 是唯一支持事务、子查询、多版本并行控制系统（MVCC）、数据完整性检查等特性的唯一的一种自由软件的数据库管理系统。 Inprise 的 InterBase 以及SAP等厂商将其原先专有软件开放为自由软件之后才打破了这个唯一。最后，PostgreSQL拥有一支非常活跃的开发队伍，而且在许多黑客的努力下，PostgreSQL 的质量日益提高。从技术角度来讲，PostgreSQL 采用的是比较经典的C/S（client/server）结构，也就是一个客户端对应一个服务器端守护进程的模式，这个守护进程分析客户端来的查询请求，生成规划树，进行数据检索并最终把结果格式化输出后返回给客户端。为了便于客户端的程序的编写，由数据库服务器提供了统一的客户端 C 接口。而不同的客户端接口都是源自这个 C 接口，比如ODBC，JDBC，Python，Perl，Tcl，C/C++，ESQL等，同时也要指出的是，PostgreSQL 对接口的支持也是非常丰富的，几乎支持所有类型的数据库客户端接口。这一点也可以说是 PostgreSQL 一大优点。本课程作为PostgreSQL数据库管理之三，主要讲解以下内容：1. PostgreSQL约束讲解和剖析2. PostgreSQL数据类型3. PostgreSQL的结构管理4. PostgreSQL条件表达式和操作5. PostgreSQL使用小技巧

资源简介第 1章 – DB2 Express-C是什么?..........................................................................................13 1.1免费开发、部署和分发… 无限制！...............................................................................13 1.2用户帮助和技术支持.....................................................................................................14 1.3 DB2服务器..................................................................................................................14 1.4 DB2客户端和驱动........................................................................................................14 1.5 应用程序开发的自由性.................................................................................................15 1.6 DB2 版本号与 DB2 版本分类........................................................................................16 1.7升级到其它的 DB2版本................................................................................................16 1.8 DB2 Express-C的维护.................................................................................................16 1.9相关免费软件................................................................................................................17 1.9.1 IBM数据工作室（Data Studio）...........................................................................17 1.9.2 DB2 Net Search Extender .....................................................................................17 1.9.3 Starter Toolkit for DB2 on Rails.............................................................................17 1.9.4 Web 2.0 Starter Toolkit for DB2 ............................................................................17 1.9.5 WebSphere Application Server – Community Edition............................................18 第 2章 – DB2相关特性和产品................................................................................................19 2.1 DB2 Express-C订购中包含的功能...............................................................................22 2.1.1 Fix packs补丁包...................................................................................................22 2.1.2高可用性灾难恢复（HADR） ................................................................................22 2.1.3数据复制（Data Replication）...............................................................................22 2.2 DB2 Express-C所不具备的功能...................................................................................23 2.2.1数据库分区............................................................................................................23 2.2.2连接集中器（Connection Concentrator ）.............................................................23 2.2.3 Geodetic Extender ................................................................................................23 2.2.4工作负载管理(Workload Management, WLM) .......................................................24 2.3 DB2相关收费产品........................................................................................................24 2.3.1 DB2连接（DB2 Connect）...................................................................................24 2.3.2 WebSphere Federation Server..............................................................................24 2.3.3 WebSphere Replication Server .............................................................................25 第 3章 – 安装 DB2..................................................................................................................27 3.1安装前提条件................................................................................................................27 3.2操作系统中的安装权限.................................................................................................27 3.3安装向导.......................................................................................................................27 3.4自动安装.......................................................................................................................31 实验 #1 安装DB2 Express-C，创建 SAMPLE数据库........................................................32 第 4章 – DB2的应用环境.......................................................................................................35 实验 #2 - 创建一个新的数据库............................................................................................43 4.1 DB2配置......................................................................................................................44 4.1.1 环境变量................................................................................................................44 4.1.2 数据库管理器配置文件(dbm cfg) ...........................................................................44 4.1.3 数据库配置文件（db cfg）....................................................................................46 4.1.4 DB2 概要文件注册表.............................................................................................47 4.2 DB2管理服务器...........................................................................................................48 实验 #3 – 实例、数据库和配置管理....................................................................................49 第 5章 – DB2工具..................................................................................................................51 5.1控制中心（Control Center）.........................................................................................52 5.2命令编辑器（Command Editor） .................................................................................55 5.3 SQL帮助向导（SQL Assist Wizard ）.........................................................................57 5.4 显示SQL按钮..............................................................................................................58 实验 #4 使用脚本填充EXPRESS数据库...........................................................................59 5.5 脚本..............................................................................................................................60 5.5.1 SQL脚本...............................................................................................................60 5.5.2操作系统（shell）脚本..........................................................................................61 实验 #5 为EXPRESS数据库创建一个安装脚本.................................................................62 5.6任务中心（Task Center ）...........................................................................................65 5.6.1工具目录（Tools Catalog）数据库........................................................................65 5.7 日志（Journal）...........................................................................................................66 5.8运行状况监视器（Health Monitor ）.............................................................................67 5.8.1运行状况中心（Health Center ）...........................................................................68 PART II – DB2 Express-C 数据库管......................................................................................71 第 6章 – DB2体系结构...........................................................................................................73 6.1 DB2进程模型...............................................................................................................73 6.2 DB2内存模型...............................................................................................................74 6.3 DB2存储模型...............................................................................................................75 6.3.1数据页和扩展数据块..............................................................................................75 6.3.2缓冲池...................................................................................................................76 6.3.3表空间...................................................................................................................77 第 7章 – DB2 客户端的连接....................................................................................................81 7.1 DB2 目录......................................................................................................................81 7.2 配置助手（Configuration Assistant ）..........................................................................82 7.2.1服务器端的安装要求..............................................................................................82 7.2.2 Setup required at the client 客户端的安装要求......................................................84 7.2.3建立客户端与服务器端概要文件............................................................................87 实验 #6 使用配置助手........................................................................................................90 第 8章 – 数据库对象...............................................................................................................93 8.1 模式..............................................................................................................................93 8.2表.................................................................................................................................93 8.2.1数据类型................................................................................................................93 8.2.2标识列...................................................................................................................96 8.2.3序列对象................................................................................................................96 8.2.4系统目录表............................................................................................................97 8.2.5已声明临时表.........................................................................................................97 实验 #7 创建一个数据表.....................................................................................................99 8.3视图............................................................................................................................101 8.4索引............................................................................................................................101 8.4.1 Design Advisor ....................................................................................................101 8.5参照完整性.................................................................................................................102 第 9章 – 数据迁移工具..........................................................................................................105 9.1 导出（EXPORT）工具...............................................................................................106 9.2 导入（IMPORT）工具................................................................................................106 9.3 使用 LOAD来导入......................................................................................................107 9.4 db2move 工具...........................................................................................................108 9.5 db2look 工具..............................................................................................................109 实验 #8 导出EXPRESS数据库的DDL............................................................................111 第 10章 – 数据库安全...........................................................................................................115 10.1 认证..........................................................................................................................116 10.2 授权..........................................................................................................................116 10.3 DBADM权限............................................................................................................118 10.4 PUBLIC 组...............................................................................................................119 10.5 GRANT和REVOKE语句 ........................................................................................119 10.6 查看授权和特权........................................................................................................119 10.7 关于组特权...............................................................................................................121 实验 #9 授予和撤销用户的权限........................................................................................122 第 11章 – 备份和恢复...........................................................................................................125 11.1 数据库的日志记录....................................................................................................125 11.2 日志的类型...............................................................................................................126 11.3 日志记录的类型.......................................................................................................126 11.3.1 循环日志记录 ....................................................................................................126 11.3.2 档案日志记录和日志保留...................................................................................127 11.4 从控制中心进行数据库日志记录...............................................................................127 11.5 日志记录的参数........................................................................................................129 11.6 数据库备份...............................................................................................................129 实验 #10 – 安排一个备份计划..........................................................................................131 11.7 数据库恢复...............................................................................................................133 11.7.1 恢复类型............................................................................................................133 11.7.2 数据库恢复........................................................................................................133 11.8 其他关于备份和恢复的操作......................................................................................134 第 12章 – 维护任务...............................................................................................................135 12.1 重组（REORG）、运行统计（RUNSTATS）、重绑定（REBIND）.......................135 12.1.1重组（REORG）命令........................................................................................135 12.1.2运行统计（RUNSTATS）命令 ..........................................................................136 12.1.3 绑定／重新绑定.................................................................................................136 12.1.4 在控制中心执行维护工作...................................................................................137 12.2 维护方式...................................................................................................................139 实验#11 – 配置自动维护.................................................................................................141 第 13章 – 并行与锁定...........................................................................................................143 13.1 事务（Transactions）..............................................................................................143 13.2 并行（Concurrency） ..............................................................................................143 13.3无并行控制导致的问题 .............................................................................................144 13.3.1丢失更新（Lost update）..................................................................................145 13.3.2未落实的读（Uncommitted read）....................................................................145 13.3.3不可重复读（Non-repeatable read）.................................................................146 13.3.4幻象（Phantom read）......................................................................................146 13.4隔离级别（Isolation Levels）...................................................................................147 13.4.1未落实的读........................................................................................................147 13.4.2游标稳定性........................................................................................................147 13.4.3读稳定性............................................................................................................148 13.4.4可重复读............................................................................................................148 13.4.5隔离级别对比.....................................................................................................148 13.4.6设定隔离级别.....................................................................................................149 13.5锁定升级...................................................................................................................150 13.6锁定监视...................................................................................................................151 13.7锁定等待...................................................................................................................151 13.8死锁的引发与侦测.....................................................................................................152 13.9并行与锁定的最佳实践：..........................................................................................153 PART III – DB2 Express-C应用程序开发............................................................................155 第 14章 –SQL PL 存储过程..................................................................................................157 14.1 IBM数据工作室（Data Studio）..............................................................................158 14.1.2在Data Studio中创建一个存储过程..................................................................159 14.2 SQL PL 存储过程基础..............................................................................................161 14.2.1存储过程的结构.................................................................................................161 14.2.2 可选的存储过程属性..........................................................................................162 14.2.3参数...................................................................................................................162 14.2.4 SQL PL存储过程中的注释................................................................................163 14.2.5 复合语句............................................................................................................163 14.2.6 变量声明............................................................................................................163 14.2.7 赋值语句............................................................................................................164 14.3 游标..........................................................................................................................164 14.4 流控制......................................................................................................................164 14.5 调用存储过程 ...........................................................................................................165 14.6 错误和情况处理器....................................................................................................166 14.7 动态SQL..................................................................................................................168 第 15章 – 直接插入 SQL 过程语言、触发器、用户定义函数（UDF）..................................169 15.1直接插入SQL PL .....................................................................................................169 15.2 触发器（Trigger）....................................................................................................170 15.2.1 触发器的类型 ....................................................................................................170 实验 #12 从控制中心创建一个触发器...............................................................................174 15.3 用户定义函数 (UDF).................................................................................................177 15.3.1 标量函数（Scalar function）.............................................................................177 15.3.2 表函数（Table function）..................................................................................178 实验 #13 使用IBM Data Studio创建用户定义函数（UDF）............................................179 第 16章 – DB2 pureXML......................................................................................................181 16.1 在数据库中使用XML................................................................................................181 16.2 XML数据库..............................................................................................................182 16.2.1 启用 XML的数据库............................................................................................182 16.2.2 原生 XML数据库...............................................................................................182 16.3 DB2中的XML..........................................................................................................183 16.3.1 pureXML 技术优势............................................................................................184 16.3.2 XPath基础........................................................................................................185 16.3.3 XQuery的定义..................................................................................................188 16.3.4 插入 XML文档...................................................................................................189 16.3.5 查询 XML数据...................................................................................................191 16.3.6 使用 SQL/XML执行联合操作............................................................................196 16.3.7 使用 XQuery执行联合操作................................................................................196 16.3.8 更新与删除操作.................................................................................................197 16.3.9 XML 索引.........................................................................................................198 实验 #14 - SQL/XML 和 XQuery.......................................................................................200 第 17章 – 使用 Java、PHP和 Ruby进行数据库应用开发...................................................201 17.1 Java应用程序开发...................................................................................................201 17.1.1 JDBC类型 2驱动程序.......................................................................................201 17.1.2 JDBC类型 4驱动程序.......................................................................................202 17.2 PHP应用程序开发...................................................................................................203 17.2.1 DB2为PHP提供的连接选项.............................................................................203 17.2.2 Zend Core for IBM.............................................................................................204 17.3 Ruby on Rails应用程序开发.....................................................................................206 17.3.1 Startup Toolkit for DB2 on Rails ........................................................................206 附录 A — 排除故障...............................................................................................................207 A.1 查找错误代码的更多信息...........................................................................................207 A.2 SQLCODE与SQLSTATE .........................................................................................208 A.3 DB2 管理通知日志.....................................................................................................208 A.4 db2diag.log................................................................................................................209 A.5 CLI追踪.....................................................................................................................209 A.6 DB2缺陷与补丁.........................................................................................................209 参考资源 ...............................................................................................................................210 网站..................................................................................................................................210 书籍..................................................................................................................................211

UNIX服务器采购项目参数及评分办法 1、需求说明：采购方本次采购,需要把生产中心已部署在IBM P595主机上的业务系统平滑迁移到本次采购的主机上。从兼容性、稳定性、性能出发，对所需采购产品的品牌、型号及技术条件要求如下表。 2、指标要求需求指标（带" "的指标项为关键指标项，必须满足）： "指标 "指标项 "技术规格要求及说明 " " 总体要求 "应用 "64位数据库服务器及应用服务器 " " "型号 "4U机架式UNIX服务器，支持AIX7.1 " " "数量 "2台 " "单台具体指 " " " "标 " " " " CPU "核心数量/主频 "16 core/4.15 GHZ " " "三级缓存 ">= 128M " " 内存 "规格 "DDR3 1600MHZ或以上 " " "容量大小 ">= 512GB， " " "最大内存扩展 ">= 1TB " "内置磁盘 "内置磁盘容量 "配置4块300GB 以上SAS接口硬盘； " "网络接口 "网卡 "4块4口网卡; " " "速率 "其中至少有两块网卡有速率在10Gbps或 " " " "以上的端口(带光纤模块)，其余的端口 " " " "速率均在1 Gbps或以上（自适应，电口 " " " "）； " "存储接口 "接口类型 "4块HBA卡； " " "端口速率 "16 Gbps以上； " "操作系统 "版本介质 "提供原厂64位UNIX企业版操作系统最新 " " " "版本； " " "用户数 "无限制； " " "安全性 "C2级或更高； " " "用户界面 "图形用户界面； " " "中文 "支持中文字符集； " " "支持的数据库 "Oracle11g,Sybase ASE12.5,Sybase ASE" " " "15,DB2等 " "系统软件 " 分区 "配置硬件或逻辑分区及其软件、硬件使 " " " "用许可，可在线实现CPU、内存、I/O资 " " " "源的动态配置与管理；本次采购要求至 " " " "少实现2个分区，每个分区均使用专有网" " " "卡*2、专有硬盘*2、专有HBA卡*2； " " "管理 "提供系统管理软件，可对进程、线程进 " " " "行管理，实现对分区资源进行自由调整 " " " "和监控。 " " "虚拟化 "配置企业级虚拟化软件使用许可 " " 电源和风扇"N+1冗余电源，N+1冗余风"其中一路电源（或风扇）失效时不影响 " " "扇 "系统正常运行 " "其他要求 "相关设备、配件及线缆 "相关设备、配件及线缆等必须齐全并满 " " " "足机房实际布局连接要求； " " 服务 "售后服务 "提供原厂上架安装服务和分区安装配置 " " " "服务；提供10人天以上的上线支持服务 " " " "。 " " " "提供原厂商5年7*24全面硬件维护服务和" " " "微码升级服务、SPS+服务 " " " "3、升级现有PowerVC到最新版本，以及5" " " "个人天的升级配置服务。 " 3、竞标要求：（1）、产品通过国家相关部门的认证，技术提供方在中国境内拥有技术研发中心与服务中心，提供产品的持续升级与技术支持服务。（2）、报价要求：竞标报价必须包括产品的所有费用，包括采购、运输、劳务、管理、利润、税金、保险、协调、培训、售后服务以及所有的不定因素的风险等。（3）、交货安装地点：需求方指定地址。（4）、必须提供技术指标响应确认函。投标人投标产品要实质上相当于或优于本表中技术参数及性能（配置）要求。提供技术指标响应确认函或其中的关键指标项有不能满足的，不得参与竞标。（5）、供货时须提供生产厂家针对本次竞标产品有效的销售授权书及售后服务承诺函原件（不能提供的，采购方有权取消合同）。（6）、竞标人必须通过ISO9001系列质量管理体系认证、ISO20000服务管理体系认证、信息系统集成及服务资质、信息系统运维服务能力等级评估资质、ITSS服务资质证明的其中一项认证（提供证书复印件）。（7）、竞标人不得提供虚假信息或虚假承诺，否则承担由此产生的一切后果。 4、评标方法本项目评标方法采用综合评分法，对竞标价格、技术、项目实施、售后服务、竞标人综合实力等方面按百分制进行评分（按四舍五入取百分位两位小数）。 4.1、价格分（50分）价格分为50分，计分方法：（1）以进入评标的最低的竞标报价为50分。（2）某竞标人的价格分 = 竞标人最低报价金额（元） / 某竞标人的报价金额（元） * 50 4.2、技术分（47分）技术分为47分，计分方法： 4.2.1品牌分（满分10分）一档0.1～5分，二档5.1～8分，三档8.1～10分，由谈判小组在打分前根据竞标货物品牌市场知名度集体讨论确

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