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Copyright (c) 2018, Oracle. All rights reserved. Oracle Confidential. Click to add to Favorites Troubleshooting: High Version Count Issues (Doc ID 296377.1) To BottomTo Bottom In this DocumentPurpose Ask Questions, Get Help, And Share Your Experience…
--查询版本高的原因 select * from v$sql_shared_cursor where sql_id=''; Configuring Download the script in the attachment: Script to create the latest version_rpt function and execute as follows: connect / as sysdba start version_rpt3_25.sql Instructions Gener…
转自 http://blog.csdn.net/notbaron/article/details/50927492 在Oracle 10g以上的版本,High version count可谓是一个臭名昭著的问题.Hight version count不仅仅产生的原因多种多样,并且会导致各种令人头痛的问题,轻导致数据库的性能急剧下降,CPU利用率剧增,重则导致数据库挂起,触发ORA-04031或者其它bug导致宕机. 什么是verion count,什么是high? 在弄清楚诊断和解决这个问题之前…
并不是用了绑定变量就一定都会游标共享,下面我们介绍的就是一种例子.BIND_MISMATCH导致VERSION COUNT过多的原因解释: This is due to the bind buffer mismatch of the current child cursor. If oracle is unable to bind the current value to the existing child cursors bind buffer, Oracle upgrades the ex…
select * from    (select sql_id, count(child_number)       from v$sql_shared_cursor      group by sql_id      order by count(child_number) desc) where rownum <=5; -- Script Code set serveroutput on DECLARE   v_count number;   v_sql varchar2(500);   v…
In this Document   Purpose   Troubleshooting Steps   What is a 'library cache: mutex X' wait?   What causes 'library cache: mutex X' wait?   Name of events in 12c and higher   How to diagnose the cause.   How to Examine the Diagnostics.   Potential S…
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