GLOBAL_TXN_PROCESSES 参数与 分布式事务,DTP 属性
2015-10-28 23:47
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在rac环境中,为了满足OGG 经典捕捉模式对分布式事务的抽取要求,
1.修改了数据库隐含参数
alter system set "_clusterwide_global_transactions"=false scope=spfile;
2.新加了service,并且service里边设置了DTP属性为TRUE
3.然后应用程序使用该service
参考mos文章:
GG Extract Report Shows "Purging Transaction", WARNING OGG-00723, OGG-00715, Updating I/O Checkpoint after Purging Orphaned Transactions, Has Secondary Transaction ID That Is Duplicate of Existing Open Uncommitted Transaction ( Doc ID 1458472.1 )
不过今天看到一篇文章:
Services and Distributed Transaction Processing in Oracle RAC(DTP) (文档 ID 1307751.1)
里边却说:
Note:
DTP services are not needed in 11.2.
As long as the database initialization parameter GLOBAL_TXN_PROCESSES is greater than zero,
Oracle11.2 allows different branches of the same global transaction to span multiple RAC instances.
1.修改了数据库隐含参数
alter system set "_clusterwide_global_transactions"=false scope=spfile;
2.新加了service,并且service里边设置了DTP属性为TRUE
3.然后应用程序使用该service
参考mos文章:
GG Extract Report Shows "Purging Transaction", WARNING OGG-00723, OGG-00715, Updating I/O Checkpoint after Purging Orphaned Transactions, Has Secondary Transaction ID That Is Duplicate of Existing Open Uncommitted Transaction ( Doc ID 1458472.1 )
不过今天看到一篇文章:
Services and Distributed Transaction Processing in Oracle RAC(DTP) (文档 ID 1307751.1)
里边却说:
Note:
DTP services are not needed in 11.2.
As long as the database initialization parameter GLOBAL_TXN_PROCESSES is greater than zero,
Oracle11.2 allows different branches of the same global transaction to span multiple RAC instances.
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