在数据库运维中,总会遇到一些粗心大意的DBA,一不小心删除一些东西,这里举例讲解在误删除ASM磁盘之后,如果用KFED工具进行恢复: [grid@RAC1 ~]$ sqlplus / as sysasm SQL Production :: Copyright (c) , , Oracle. All rights reserved. Connected to: Oracle - 64bit Production With the Real Application Clusters and Auto…

Oracle 下ASM磁盘总结 文章转载: Oracle下创建ASM磁盘总结https://blog.csdn.net/okhymok/article/details/78791841?utm_source=blogxgwz1 Oracle_rac在vmware上面安装时,udev磁盘没有scsi_id返回值http://www.68idc.cn/help/jiabenmake/qita/20141224149948.html 使用udev管理asmdisk常用的命令http://blog.it…

一.环境.[grid@rhel2 ~]$ cat /etc/issueRed Hat Enterprise Linux Server release 5.5 (Tikanga) Kernel \r on an \m[grid@rhel2 ~]$ uname -aLinux rhel2.localdomain 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux[root@rhel2 bi…

ASM磁盘无法识别几种现象: 1) gi家目录或者其子目录权限错误 2)asm磁盘的权限错误 3)asm实例未启动或者asm磁盘组没有mount上 4)asm磁盘组资源没有在线 5)oracle用户的权限错误 6)oracle($ORACLE_HOME/bin)可执行文件的权限错误 OK,那我就按照上面的分析结果进行逐一排查: 1) gi家目录或者其子目录权限错误 [root@rac1 ~]# ls -ld /u01/app/11.2.0/grid/drwxr-x--- 66 root oins…

因之前分区时,分区的Last cylinder的值选了“1”,导致创建磁盘组空间不足.解决办法是先删除分区,重新创建分区并删除ASM磁盘,然后重建ASM磁盘 1. 先删除分区,重新创建分区: 1)查询空间不足的分区情况: [root@linuxrac1 ~]# fdisk /dev/sdb Command (m for help): p Disk /dev/sdb: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylind…

1.错误信息:Instantiating disk: failed [root@linuxrac1 /]# /usr/sbin/oracleasm createdisk OCR_VOTE /dev/sdb1 /etc/init.d/oracleasm createdisk OCR_VOTE /dev/sdb1 Writing disk header: done Instantiating disk: failed Clearing disk header: done 2.解决办法: 1.首先检查…

案例:Oracle报错ASM磁盘组不存在或没有mount 环境:RHEL 6.5 + Oracle Standby RAC 11.2.0.4 我做Standby RAC实验时,在恢复控制文件时,报错无法在磁盘组创建文件,具体报错内容如下: [oracle@jystdrac1 standby]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Wed Aug 9 22:35:41 2017 Copyright (…

--root用户执行vi /etc/sysctl.conf #Install oracle settingfs.aio-max-nr = 1048576fs.file-max = 6815744#kernel.shmall = 2097152#kernel.shmmax = 4294967295kernel.shmmni = 4096kernel.sem = 250 32000 100 128net.ipv4.ip_local_port_range = 9000 65500net.core.rm…

ORA-19504: failed to create file "+DATA" ORA-15045: ASM file name '+DATA' is not in reference form ORA-17502: ksfdcre:5 Failed to create file +DATA ORA-15081: failed to submit an I/O operation to a disk 在DBCA过程中,发现无法识别ASM磁盘组报以上错误,解决方法如下: 两个节点分析执…

生产环境注意调整以下参数: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + 1.节点间滚动添加UDEV磁盘 + 2.ASM 内存大小 + 3.POWER_LIMIT别弄太大 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++…