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[……]
March 20, 2012 oracle, replication 2 comments dataguard
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[……]
March 18, 2012 oracle, replication 3 comments dataguard
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″[……]
March 14, 2012 oracle, replication 2 comments dataguard
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$logstdby_process no rows[……]
March 8, 2012 11g, maintain, oracle 1 comment 11g new feature
Create a database link with the new host:port/service syntax
Submitted by tanelpoder on Mon, 2012-03-05 15:57
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I just noticed that (finall[……]
昨天看了roger的一篇文章,如何在创建index 之前估算它的大小,这里有一种更简单的方法实现:
主要思路就是采用了dbms_space.create_index_cost这个包
–create a testing table named t
SQL> create tabl[……]
March 6, 2012 Internals, oracle, RAC No comments RAC
Rebootless Node Fencing
In versions before 11.2.0.2 Oracle Clusterware tried to prevent a split-brain with a fast reboot (better: reset) of the[……]
March 2, 2012 maintain, oracle No comments scripts
This script is monitoring sessions that are not commited :
— |—————————————————————————-|[……]
March 2, 2012 migration, oracle 1 comment database migrate
Cloning an Oracle Home
Cloning an Oracle home involves creating a copy of the Oracle home and then configuring it for a new environment. If[……]
February 23, 2012 maintain, oracle No comments 11g
从10.2.0.5的库导入一张表的增量数据到11.2.0.3 impdp报出如下错误,对比两边表结构一致,tablespace有剩余空间 报错如下:
[oracle@localhost ~]$ impdp \’\/ as sysdba \’ directory=pump dum[……]
February 20, 2012 backup, oracle, replication No comments structure
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/[……]