1. 解释错误"maximum open cursors exceeded"的含义 错误"maximum open cursors exceeded" 表示在 MySQL 数据库中,当前会话或全局范围内打开的光标(cursor)数量已经达到了系统允许的最大限制。光标是数据库操作中用于遍历查询结果集的一个机制。当这个限制被超过时,数据库将拒绝执行任何需要新光标的操作,并抛出此错误...
我使用的v4,通过增加游标数解决了这个问题,使用下面sql设置游标数:ALTER SYSTEM SET open_cursors=1500...
ob4.0 执行sysbench的时候报错。 image1430×609 29.3 KB jarry 2022 年11 月 24 日 17:13 #2 好了,是忘记加 --db-ps-mode=disable。 陈某某 2024 年2 月 29 日 17:07 #3 这个参数是什么作用呢 王利博 2024 年3 月 1 日 09:55 #4 jarry: –db-ps-mode=disable image1088×227 10.3 KB...
在之前的一次讨论中,有同行指出V$OPEN_CURSOR中列出的不是OPEN CURSOR而是SESSION CACHED CURSOR,原因是在一次ORA-01000(maximum open cursors exceeded)事故中他没有从V$OPEN_CURSOR中找到大量的打开游标。 对于这个问题,我们可以利用JAVA程序做一个演示来说明,以下为JAVA代码: package javaapplication2; import java.ut...
and b.name = 'opened cursors current' group by rollup (b.name,a.sid) order by 1 / select a.value, s.username, s.sid, s.serial# from v$sesstat a, v$statname b, v$session s where a.statistic# = b.statistic# and s.sid=a.sid ...
Exception : java.sql.SQLException: ORA-01000: maximum open cursors exceeded 1. getConnection相当于打开一个数据库session, 查看session 语句:select * from v$session ss where ss.USERNAME='ISKK_TEST' 2. statement,prepareStatement,callableStatement 获取一个游标,此时并不会在v$open_cursor 里出现,execute之...
在之前的一次讨论中,有同行指出V$OPEN_CURSOR中列出的不是OPENCURSOR而是SESSION CACHEDCURSOR,原因是在一次ORA-01000(maximumopencursors exceeded)事故中他没有从V$OPEN_CURSOR中找到大量的打开游标。 对于这个问题,我们可以利用JAVA程序做一个演示来说明,以下为JAVA代码: package javaa ...
Incorrect AUTO_INCREMENT values were generated when the maximum integer column value was exceeded. The error was due to the maximum column value not being considered. The previous valid AUTO_INCREMENT value should have been returned in this case, causing a duplicate key error. (Bug #87926, Bug...
To solve the issue of inserting a string with over 600 characters into a column, it's important to note that CharField has a maximum length of 256 characters for most database backends. You can verify this value in your database backend. When tested on two different databases, one database...
A value representing an upper limit, either a hard limit that should not be exceeded at runtime, or a record of the maximum value that was actually reached. Contrast with low-water mark. See Also low-water mark. history list A list of transactions with delete-marked records scheduled to ...