查看数据仓库的awr报告发现以下问题 顺便总结一下之前碰到的一类问题
CPU Time (s)Executions CPU per Exec (s)%TotalElapsed Time (s)%CPU%IO SQL IdSQL ModuleSQL Text
13,664.[……]
June 18, 2012 11g, oracle No comments 11g
查看数据仓库的awr报告发现以下问题 顺便总结一下之前碰到的一类问题
CPU Time (s)Executions CPU per Exec (s)%TotalElapsed Time (s)%CPU%IO SQL IdSQL ModuleSQL Text
13,664.[……]
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[……]
December 16, 2011 11g, backup, oracle No comments 11g
11g Release 2 RMAN Backup Compression
Oracle 11g Release 2 introduced compression algorithm levels which can be used for compressing table data, Data[……]
December 13, 2011 11g, hardware, oracle No comments 11g
11G新特性 IO Calibration可以帮我们估算出存储的读写性能，在使用这个特性之前 我们需要满足一些条件：
.在linux系统中默认是不开启异步IO的
SQL> show parameter filesystemio_options
NAME TYPE V[……]
December 7, 2011 maintain, oracle, replication 2 comments 11g
今天在生产库解决一个ORA-01555 on Active Physical standby问题：
Applies to:
Oracle Server – Enterprise Edition – Version: 11.2.0.2.0 and later [Release: 11.2[……]