ORA-4021 的发生原因
An Oracle instance contains a cache that holds the definitions of each different type of objects e.g. cursors, indexes, tables, views, procedures, etc. This cache is called the library cache and conta
Read more日期：2017年12月6日
LGWR (ospid: 40339): terminating the instance due to error 4021
www.dbhelp.net 十字螺丝钉的DBA日记 公司备库ADG意外宕机，alert日志显示LGWR进程终止了DB instance
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Wed Dec 06 02:34:59 2017 Errors in file /u01/app/oracle/diag/rdbms/ivlstd3/ivlstd3/trace/ivlstd3_lgwr_40339.trc: ORA-04021: timeout occurred while waiting to lock object LGWR (ospid: 40339): terminating the instance due to error 4021 |
错误原因： 1、发生ORA-4021 错误的原因？ 获取library cache lock/pin 超时 2、为什么是 LGWR 终止了db instance？ 根据 《Bug 18242740
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