alter database mount standby database
日志中记录报错
Error 1034 received logging on to the standby
FAL[client, ARC4]: Error 1034 connecting to primary for fetching gap sequence
主备机配置流程中未出现错误 备库启动 执行 alter database mount standby database 日志中记录报错 Error 1034 received logging on to the standby FAL[client, ARC4]: Error 1034 connecting to primary for fetching gap sequence 主备机启动后会同步一次 主库修改或添加数据 未创建新的arc文件 主库需执行alter system switch