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…
About Oracle ASM Instances About Oracle ASM Disk Groups About Mirroring and Failure Groups About Oracle ASM Disks About Oracle ASM Files About Oracle ASM Instances Oracle ASM 实例基于和 Oracle Database 实例相同的技术构建.Oracle ASM instance 具有类似于 Oracle 数据库实例的 Sys…
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…
ASM实例内存修改 memory_max_target(它为静态参数,修改完成后需要重启实例) memory_target(它为动态参数,不需要重启实例) SQL> select name,issys_modifiable from v$parameter where name='memory_max_target'; NAME ISSYS_…
使用asmcmd命令在本地和远程 asm 实例之间 拷贝asm file的方法 參考原文: How to Copy asm files between remote ASM instances using ASMCMD command (Doc ID 785580.1) 适用于: Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.2.0.2 [Release 11.1 to 11.2] Information in thi…
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_…
环境:Oracle 12.2.0.1 RAC 背景:用户反映12c ASM创建的用户具备sysasm权限,但无法在客户端连接到ASM实例,且没有报错. 1.ASM实例创建用户赋予sysasm权限 2.客户端tnsnames.ora配置 3.客户端测试连接 1.ASM实例创建用户赋予sysasm权限 sqlplus / as sysasm SQL> create user infa identified by infa; User created. SQL> grant sysasm to in…
今天遇到一个奇怪问题,发现srvctl和crs_start命令无法启动Oracle RAC实例,但用sqlplus却可以正常启动.最终发现原因是在OCR中数据库的状态变成了disable,将此状态更改为enable后恢复正常. 以下是一个模拟示例: oracle@his00mlcdrc02:~ $> crs_stat -t Name Type Target State Host -----------------------------------------------------------…
[翻译自mos文章]11.2.0.4及更高版本号的asm实例中MEMORY_TARGET 和 MEMORY_MAX_TARGET的默认值和最小值 来源于: Default and Minimum MEMORY_TARGET & MEMORY_MAX_TARGET Value for ASM 11.2.0.4 and Onwards (文档 ID 1982132.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 11.2.0…
Oracle 数据库修复一例:(系统装有两个实例,分别是:bhorcl,orcl)今天一台生产服务器的Oracle不能正常登录,用plSql登录,提示:TNS:listernet does noet curently know of sid given in connect descriptor.初步判断是监听不能启动.第一步,查监听程序.C:\Users\Administrator>lsnrctl status LSNRCTL for 64-bit Windows: Version 11.2.…
修改ASM实例中SYS用户密码 How To Change ASM SYS PASSWORD ? (文档 ID 452076.1) Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.3 [Release 10.2 to 11.2] SOLUTION The password should be the one provided when the password file was created,also REMO…