replication

Oracle DGHA architecture

November 1, 2013 advanced tech, Architect, network, oracle, replication No comments


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DGHA,Dataguard自动切换方案

August 15, 2013 Architect, oracle, replication, software No comments

发布对autoswitch over dg脚本DGHA测试,此脚本针对oracle dataguard设计使用共享存储存放redo以及controlfile从而达到了切换数据0丢失。
同时切换以后,original primary database可以无缝加入整个dg集群,从而形成了datagua[……]

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Active dataguard tips

January 23, 2013 oracle, replication No comments

11g ADG 给了大家更多的灾备选择,包括之前美国飓风,给了ADG大放光彩的机会,但是ADG并没有想象中的那么完美,以下是最近的一个CASE,具体过程不详写了,目前这个case还在跟进中,记录之:

[oracle@dcb-srv-0174 trace]$ cat itemstd02_ora_[......]

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Physical standby Failover

June 28, 2012 oracle, replication No comments

db1 –liu

SQL> select * from v$version;

BANNER
—————————————————————-
Oracle Database 10g Enterpr[……]

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Recover physical standby database after loss of archive log(2)

June 20, 2012 oracle, replication No comments

Recover physical standby database after loss of archive log(2)

上次写过一篇DG丢失归档后的处理过程,总体来说就是使用增量备份覆盖gap数据从而跳过gap的archivelog 这里再阐述另一种情况

[oracle@db6[……]

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Recover physical standby database after loss of archive log

March 20, 2012 oracle, replication 2 comments

今天报表数据库的备库出现了问题,由于监控脚本出现了问题,主机空间耗尽 而没有及时发出邮件,导致归档无法进行,DB停滞在一个时间点,同时在主库 由于只保留了2天的归档 导致这部分归档没有传输至备库,等我们发现问题时,主库已经删除了归档,备库接近8天gap无法恢复。由于主库超过3个T ,重新用备份恢复一[……]

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logic standby ORA-01403 故障处理一例 (2)

March 18, 2012 oracle, replication 3 comments

前几天刚处理了 logic standby故障,还没缓过神来 , logical standby 又出问题了。 还是那张表,那个错误 不得不让我怀疑 是不是那张表出现了问题。记录一下解决的过程:

2012-03-16 11:45:00 update “PROD_DATA2″[……]

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logic standby ORA-01403 故障处理一例

March 14, 2012 oracle, replication 2 comments

昨天的logic standby 事故处理:

夜里12点左右 2台logic standby 全部停止日志apply 查看logic standby 相关进程发现:

1.select spid, type, status from v$logstdby_process no rows[……]

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Fractured blocks when Rman backup is running

February 20, 2012 backup, oracle, replication No comments

系统alert在主库出现下面错误 OS为linux 5.5

Stopping background process CJQ0
Sat Feb 11 03:41:07 2012
Hex dump of (file 9, block 561424) in trace file /data/[……]

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记录一次database upgrade 导致physical standby故障

February 9, 2012 migration, oracle, replication No comments

记录一次database upgrade 导致physical standby故障

upgrade from 10.2.0.5->11.2.0.3

单节点的database升级很容易,严格按照手册,修改compatible=10.2.0

参考文档 Complete Checkli[……]

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