说明：本文为Oracle GoldenGate抓取进程模式转换指导手册
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★ 知识点
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※ 原来的trail文件可以继续使用，转换模式不涉及trail格式的更改
※ 该模式转换仅对当前进程有影响，对源端其他抓取进程、投递进程和目标端应用进程没有影响，不需要做改动
★ 集成模式环境要求
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※ 摘要：数据库版本≥11.2.0.3，最好是≥11.2.0.4
※ 详情：
① 要支持所有Oracle数据和存储类型，源数据库的兼容性设置必须至少为11.2.0.3与Integrated Extract 11.2.x的11.2.0.3数据库特定的捆绑软件补丁（My Oracle Support文档ID 1557031.1）。要从My Oracle Support获得此补丁，请转到：https://support.oracle.com/oip/faces/secure/km/DocumentDisplay.jspx?id=1557031.1
② 要在不安装DDL支持对象的情况下支持DDL捕获，源数据库必须至少为Oracle 11.2.0.4或更高版本。对于早期的数据库版本，DDL支持对象是必需的，请参阅“ 安装基于触发器的DDL Capture”。
★ 大致步骤和命令
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※ 向挖掘数据库反向注册提取组。除此之外，它还会删除已经创建了的日志挖掘服务器。
※ 查看OGG状态，直到状态为“is ready”后停止并进行模式切换
※ 验证对比
OGG > dblogin userid ogg,password ogg
OGG > INFO EXTRACT ex_scott DOWNGRADE
OGG > stop ex_scott
OGG > ALTER EXTRACT ex_scott DOWNGRADE INTEGRATED TRANLOG
OGG > unregister extract ex_scott database
OGG > start ex_scott
★ 常见问题
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※ 参数不支持
提示：2020-04-17 12:25:32 ERROR OGG-10144 (ex_scott.prm) line 13: Parameter [logretention] is not valid for this configuration.
原因：集成模式不支持部分classic的参数：tranlogoptions logretention sr
※ 打补丁
提示：2020-04-17 14:48:23 ERROR OGG-02912 Patch 17030189 is required on your Oracle mining database for trail format RELEASE 12.2 or later.
原因：对于trail格式12.2或更高版本的Oracle挖掘数据库，需要使用补丁17030189
★ 操作详情
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✔ 进入OGG并查看原始状态（集成模式）
[root@rac1 ~]# su - oggos
[oggos@rac1 ~]$ rlwrap /ogg123/ggsci
Oracle GoldenGate Command Interpreter for Oracle
Version 12.3.0.1.4 30547022_FBO
Linux, x64, 64bit (optimized), Oracle 11g on Dec 27 2019 17:52:01
Operating system character set identified as UTF-8.
Copyright (C) 1995, 2018, Oracle and/or its affiliates. All rights reserved.
GGSCI (rac1) > info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EX_SCOTT 00:00:10 00:00:05
EXTRACT RUNNING PU_SCOTT 00:00:00 00:00:09
GGSCI (rac1) > info *
EXTRACT EX_SCOTT Last Started 2020-04-17 15:02 Status RUNNING
Checkpoint Lag 00:00:10 (updated 00:00:07 ago)
Process ID 9133
Log Read Checkpoint Oracle Integrated Redo Logs 【集成模式的redo带“Integrated”前缀】
2020-04-17 15:11:12
SCN 0.1184429 (1184429)
EXTRACT PU_SCOTT Last Started 2020-04-17 15:02 Status RUNNING
Checkpoint Lag 00:00:00 (updated 00:00:01 ago)
Process ID 9134
Log Read Checkpoint File /ogg123/dirdat/es000000007
2020-04-17 15:06:41.000000 RBA 23605
✔ 执行转换
GGSCI (rac1) > dblogin userid ogg,password ogg
Successfully logged into database.
GGSCI (rac1 as ogg@rac1) > INFO EXTRACT ex_scott DOWNGRADE
Extract EX_SCOTT is ready to be downgraded from integrated capture. Archive logs corresponding to SCN 1184268 and higher must be accessible by the downgraded extract.
GGSCI (rac1 as ogg@rac1) 6> ALTER EXTRACT ex_scott DOWNGRADE INTEGRATED TRANLOG
Extract EX_SCOTT successfully downgraded from integrated capture.
GGSCI (rac1 as ogg@rac1) 7> unregister extract ex_scott database
2020-04-17 15:14:15 INFO OGG-01750 Successfully unregistered EXTRACT EX_SCOTT from database.
✔ 启动并查验
GGSCI (rac1 as ogg@rac1) > start EX_SCOTT
Sending START request to MANAGER ...
EXTRACT EX_SCOTT starting
GGSCI (rac1 as ogg@rac1) 10> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EX_SCOTT 00:00:03 00:01:23
EXTRACT RUNNING PU_SCOTT 00:00:00 00:00:04
GGSCI (rac1 as ogg@rac1) 11> info *
EXTRACT EX_SCOTT Last Started 2020-04-17 15:14 Status RUNNING
Checkpoint Lag 00:00:00 (updated 00:00:01 ago)
Process ID 9521
Log Read Checkpoint Oracle Redo Logs 【非集成模式的redo不带“Integrated”前缀】
First Record Seqno 24, RBA 36408848
SCN 0.1184497 (1184497)
EXTRACT PU_SCOTT Last Started 2020-04-17 15:02 Status RUNNING
Checkpoint Lag 00:00:00 (updated 00:00:07 ago)
Process ID 9134
Log Read Checkpoint File /ogg123/dirdat/es000000007
2020-04-17 15:06:41.000000 RBA 23605
over
