翻译自mos文章在12c中Create or Truncate Table时非常慢,等待事件为 DFS Lock Handle wait

Posted lxjshuju

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了翻译自mos文章在12c中Create or Truncate Table时非常慢,等待事件为 DFS Lock Handle wait相关的知识,希望对你有一定的参考价值。

来源于:

Create or Truncate Table Slow in 12c While Waiting for DFS Lock Handle wait (文档 ID 2085308.1)

APPLIES TO:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

SYMPTOMS

In 12c database, create or truncate table is very slow. High "DFS lock handle" waits are observed.  Same create or truncate statement runs faster in 11g.

CHANGES

 Upgraded to 12c

CAUSE

The issue is due to inmemory stats being flushed during the truncate of the parent segment. 
This has been discussed in below bugs:

Bug 20858716 - CREATE TABLE VERY SLOW
closed as duplicate of
Bug 20171986 - SLOW TRUNCATE ON 12.1.0.2 DUE TO "DFS LOCK HANDLE"


 

SOLUTION

Download and apply interim patch 20171986 .
 

REFERENCES


BUG:20858716 - CREATE TABLE VERY SLOW

NOTE:1597161.1 - ORA-00600 Upon ‘alter Table [name] No Row Archival‘ 

以上是关于翻译自mos文章在12c中Create or Truncate Table时非常慢,等待事件为 DFS Lock Handle wait的主要内容,如果未能解决你的问题,请参考以下文章

翻译自mos文章在12c数据库中,哪种audit trail 受到支持?

翻译自mos文章怎么startup/shutdown PDB?

翻译自mos文章当/var/tmp文件夹被remove掉之后,GI crash,并启动失败,原因是ohasd can not create named pipe

翻译自mos文章多租户中的service管理

翻译自mos文章job 不能自己主动执行--这是另外一个mos文章,本文章有13个解决方法

翻译自mos文章在UNIX中,怎么确定一个特定的可执行程序link的是哪些Shared Libraries ?