前几天,一台Oracle数据库（Oracle Database 10g Release 10.2.0.4.0 - 64bit Production）监控出现"PMON failed to acquire latch, see PMON dump"错误，连接数据库出现短暂异常，告警日志中具体错误如下所示：
Tue Dec 20 09:13:16 2016
PMON failed to acquire latch, see PMON dump
Tue Dec 20 09:14:16 2016
PMON failed to acquire latch, see PMON dump
Tue Dec 20 09:15:55 2016
PMON failed to acquire latch, see PMON dump
Tue Dec 20 09:17:15 2016
PMON failed to acquire latch, see PMON dump
Tue Dec 20 09:17:24 2016
WARNING: inbound connection timed out (ORA-3136)
Tue Dec 20 09:18:23 2016
PMON failed to acquire latch, see PMON dump
Tue Dec 20 09:19:24 2016
PMON failed to acquire latch, see PMON dump