ORA-60025: Event for temp segment cleanup used for temp lobs

文档解释

ORA-60025: Event for temp segment cleanup used for temp lobs

Cause: Temp LOB segments used for temporary LOBs are deleted only on session exit which may lead to large amounts of memory being held across multiple sessions.

Action: Setting this event will cause temporary LOB segments to be freed when there are no active temporary LOBs in the session. Setting this event will have a significant performance impact as it can cause temporary lob segments to be allocated and deleted many times during a session rather than once per session. Use this event only when temporary LOB segment memory use is an issue.

答：

ORA-600[25]是一般错误首要的代码，是一种内部错误，通常表明数据库内部检测到一个问题。这个具体的错误涉及到事件，可能是清理临时LOBs的事件。

官方解释

ORA-600[25]：Event for temp segment cleanup used for temp lobs。表示当Oracle数据库用临时LOBs时，清除临时分段时可能会发生的错误。

常见案例

当应用程序运行temp LOBs操作时，ORA-600[25]可能会出现。是因为Oracle无法清除相关的临时分段，从而导致Oracle报出这类错误。

一般处理方法及步骤

1. 通过查看alert日志，查看具体的错误信息，了解具体的错误原因；

2. 查询v$session_longops系统视图，找出相应会话正在做的操作；

3.对于导致该错误的SQL语句，可以修改其逻辑；

4. 错误消失后，重新运行该sql语句，确认解决问题；

5. 为了避免类似错误出现，可以在数据库上做相应优化，比如修改相关参数，或者优化应用程序等；

6.关注硬件用量，以保证服务器的稳定性。