BEGIN SYS.KUPW$WORKER.MAIN('SYS_EXPORT_SCHEMA_02', 'SYS'); END; 问题背景: 客户反馈系统突然很慢,查询awr报告 1 658whw2n7xkd2 BEGIN SYS.KUPW$WORKER.MAIN('SYS_EXPORT_SCHEMA_02', 'SYS'); END; 1. 数据库在取数据块时为了保护内存的数据结构而加了latch(一种锁,很短暂),当SQL逻辑读过高,在...
1 BEGIN SYS.KUPW$WORKER.MAIN('SYS_EXPORT_SCHEMA_02', 'SYS'); END; 当时没搞明白,这语句块代表啥意思,百度搜了一下是用EXPDP在备份数据,客户确认确实有定时备份任务,建议用户调整备份时间 数据泵expdp需要全表扫,要把数据块都读到内存中,进行导出,当进入内存后,expdp获得了数据块的latch,但是这时候有个sq...
1 658whw2n7xkd2 BEGIN SYS.KUPW$WORKER.MAIN('SYS_EXPORT_SCHEMA_02', 'SYS'); END; 数据库在取数据块时为了保护内存的数据结构而加了latch(一种锁,很短暂),当SQL逻辑读过高,在并发的情况下大家都要去取相同的数据库而产生的等待, 出现这两个等待事件,基本上是由于大量的逻辑读竞争造成,那么直接去查逻...
sys_export_schema的用途 sys/select.h 文章目录 使用 头文件 原型 参数 返回值 注意 例子 应用 详细介绍 struct fd_set struct timeval 具体解释select的参数 fd_set*readfds fd_set*writefds fd_set *errorfds struct timeval *timeout 举例 select()函数与Linux驱动程序的关系 使用 如果有一个服务器程序维护...
Oracle Database - Enterprise Edition - Version 10.2.0.4 and later: ORA-31637: cannot create job SYS_EXPORT_SCHEMA_01 for user SYSTEM When Exporting With Datapump
步骤：一、win键+R键，输入cmd，打开命令提示符。二、然后根据实际情况选择不同的exp语句。exp语句详解：获取帮助 exp help=y 2. 导出一个完整数据库 exp system/manager file=bible_db log=dible_db full=y 3. 导出数据库定义而不导出数据 exp system/manager file=bible_db log=dible_db full...
SysTools Export Notes recently underwent a major update as a result of which it is now available in version 9.7. The latest version of the software portrays a number of upgraded features set which includes an enhanced and more organized Graphical User Interface. Other updated features have been ...
SysTools Exchange Export v2.1 Is Live Recently SysTools Exchange Export got upgraded to version 2.1. The upgrade came with new updates made to the application. Updated changes in SysTools Exchange Export application are: Read More Major update 13 FEB 2015 SysTools Exchange Import v2.1 Is Live...
TABLESYSTEM.SYS_EXPORT_FULL_10VALID1434983TABLESYSTEM.SYS_EXPORT_FULL_11-- Below we clearedallOrphaned Data Pump Jobs. SQL> droptableSYS.SYS_EXPORT_FULL_01;Tabledropped. SQL> droptableSYS.SYS_EXPORT_SCHEMA_01;Tabledropped. SQL> droptableSYS.SYS_EXPORT_SCHEMA_02;Tabledropped. SQL> droptable...
$ perl sys-mysql-createdb --host 127.0.0.1 --user root --database mysql --askpass --createdb=test3 --account-user=user_test1 --account-host='10.0.21.%' Enter password : ERROR: The mysql is in the Binlog_Ignore_DB: mysql,test,information_schema,performance_schema maybe missing the sl...