1.故障现象描述 2.确认故障现象 3.排查ASM层面 4.解决问题 1.故障现象描述 环境:AIX 7.1 + Standalone Oracle 11.2.0.4 现象:客户反映某11g版本的ADG备库无法正常进行任何查询,数据库alert发现ORA-00494:enqueue [CF] held for too long (more than 900 seconds) by 'inst 1, osid 18875390'. 2.确认故障现象 登录到db实例,尝试查询select open_…
1.查看当前磁盘 [root@std u01]# fdisk -l Disk /dev/sda: bytes heads, sectors/track, cylinders Units = cylinders of * = bytes Device Boot Start End Blocks Id System /dev/sda1 * + Linux /dev/sda2 Linux swap / Solaris Disk /dev/sdb: MB, bytes heads, sectors/tr…
设置了RemoveIPC=yes 的RHEL7.2 会crash掉Oracle asm 实例和Oracle database实例,该问题也会在使用Shared Memory Segment (SHM) or Semaphores (SEM)的应用程序中发生.来源于:ALERT: Setting RemoveIPC=yes on Redhat 7.2 Crashes ASM and Database Instances as Well as Any Application That Uses a…
数据库rac启动时报错,日志例如以下,后来使用 Sat Jun 7 06:02:11 2014 GATHER_STATS_JOB encountered errors. Check the trace file. Sat Jun 7 06:02:11 2014 Errors in file /oracle/product/admin/dqb/bdump/dqb2_j001_13352.trc: ORA-08103: object no longer exists Sat Jun 7 06…