oracle rac故障分析

Oracle rac宕機分析故障處理

某客戶rac數據庫2號節點實例自動宕節點，以下為分析報告

一、現象回顧：

2號節點發生故障時，alert日志顯示如下：

Thread 2 advanced to log sequence 77740 (LGWR switch)

Current log# 24 seq# 77740 mem# 0: /dev/rcrm4_rd2_91_2G

Current log# 24 seq# 77740 mem# 1: /dev/rcrm4_rd2_92_2G

Mon Mar 28 09:45:23 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:46:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:47:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:47:53 BEIST 2011

Thread 2 advanced to log sequence 77741 (LGWR switch)

Current log# 25 seq# 77741 mem# 0: /dev/rcrm5_rd2_101_2G Current log# 25 seq# 77741 mem# 1: /dev/rcrm5_rd2_102_2G

Mon Mar 28 09:48:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:49:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:50:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:51:52 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:52:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:53:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:54:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:55:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:56:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:57:53 BEIST 2011

PMON failed to acquire latch, see PMON dump

Mon Mar 28 09:58:44 BEIST 2011

Received an instance abort message from instance 1 (reason 0x0)

總結

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