--建立ORACLE到SQL SERVER的分布式--
1、安装 Microsoft Data Access Components (MDAC)SDK ODBC driver
2、test whether CATHS has run.connect to the Oracle server
as schema "SYSTEM" and do "DESCRIBE SYS.HS_FDS_CLASS".
If it does not exist, connect as SYS (or internal) and run
the CATHS script. (ORACLE_HOME\RDBMS\ADMIN\CATHS.SQL)