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以下这个Action Script是我收集的在解决ORA-125XX(如ORA-12560)这类网络链接故障时的一些思路，主要包括 现有的网络配置(client & server side)、监听日志、SQLNET Client trace等信息-- How to troubleshooting ORA-125** connection issues： # CH...

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《rac不到redo大小就切换是什么原因？》 这个帖子详细讨论了RAC或单机环境中归档日志没到online redolog size 大小就马上切换问题的成因， 主要是由于oracle内部算法所决定的， 一般不会造成实例 性能或可用性问题， 唯一的困扰可能是 生成了较多的小归档日志。

A "Redo Block Address" (RBA) describes a physical location within a redo log file. An RBA consists of the following: Log sequence number Block number within log file Byte offset within block The struc...

DUL Unloading a truncated table Situation A table was truncated, need to recover the data. The tablespace has three files, one datafile is missing from the backup and cannot be restored. DUL Backgroun...

The Block Index feature, support for corrupted file systems and disk groups You can even unload a database that has no data files anymore. A block index is a way to unload from any corrupted file syst...

amdu Always good to know that starting from 11g amdu is included in the distribution. Amdu is the asm dump utility. Apart from dumping asm metadata it also has an -extract option to extract a file fro...

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