数据库版本： Oracle 11.2.0. 3 .0

数据库服务器操作系统： Windows server 2008

问题现象： 数据库实例自动关闭，后台alert日志报错如下

ORA-07445: exception encountered: core dump [kglic0()+774] [ACCESS_VIOLATION] [ADDR:0x31] [PC:0x114E8B8] [UNABLE_TO_READ] []

Incident details in: E:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_2935371\orcl_m001_3404_i2935371.trc

......

PMON failed to acquire latch, see PMON dump

Sat Jul 16 10:02:38 2016

Errors in file E:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_smco_4580.trc  (incident=2934523):

ORA-00445: background process "W004" did not start after 120 seconds

Incident details in: E:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_2934523\orcl_smco_4580_i2934523.trc

Sat Jul 16 10:03:32 2016

PMON failed to acquire latch, see PMON dump

Sat Jul 16 10:05:00 2016

PMON failed to acquire latch, see PMON dump

Sat Jul 16 10:06:03 2016

......

问题分析：

查看MOS，和BUG 13550185 特别吻合；

但是MOS 已经不提供 Windows 平台的 Patch 13550185

解决方案：

Add init parameter _kghdsidx_count = 1 and restart database.

ORA-7445 [kglic0] (文档 ID 1321840.1)
Bug 13550185 - Hang / SGA memory corruption / ORA-7445 [kglic0] when using multiple shared pool subpools - superseded ( 文档 ID 13550185.8)

作者：chenoracle

最后修改：2022 年 02 月 20 日
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