ACFS

How to Create Database on ACFS

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Assuming that you have created a ACFS file system for the database creation. Then you can go on reading this post. Create a Database on ACFS First of all, make sure everything is ready including ACFS mount point which is /u02/oradata1 in this case. [grid@primary01 ~]$ crsctl status resource ora.data.oradata1.acfs -t ——————————————————————————– Name      […]
ASM

How to Create a ASM Disk Group

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To isolate non-crucial backups from crucial data in the current disk group DATA, a separate new disk group with new disks is needed to put all backups. For meeting our new requirement, we plan to create a disk group called FRA, i.e. Fast Recovery Area, by ourselves. The utility that we are going to use […]
ACFS

How to Create a ACFS File System on 18c

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Create ACFS File System First of all, make sure everything is ready on grid-level. [root@primary01 ~]# su – grid [grid@primary01 ~]$ crsctl check crs [grid@primary01 ~]$ crsctl status resource -t Create a Volume In this case, We allocate 80GB for the new volume ORADATA1 from a ASM disk group, DATA. [grid@primary01 ~]$ asmcmd volcreate -G […]
ASM

How to Resolve Grid Installation OUI Discovers No Disk

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Requirements for Disk Discovery There’re several requirements for disks to be discovered: 1. Right Device Type Only block devices leading by letter b in permission notation are acceptable, any others device types, such as character devices or pseudo devices are not ASM candidates. Neither are symbolic links (leading by letter l). Please see an example […]
ASMLib

How to Resolve ASMLib Scanned No Disks on Boot

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ASMLib Scanned Nothing on Boot-Time ASMLib seems to be started too soon to scan iSCSI disks which may not be ready on boot in Enterprise Linux 7. [root@primary01 ~]# oracleasm listdisks [root@primary01 ~]# oracleasm-discover Using ASMLib from /opt/oracle/extapi/64/asm/orcl/1/libasm.so [ASM Library – Generic Linux, version 2.0.12 (KABI_V2)] Nothing was found there when we tried to list […]
ASM

How to Resolve ASMLib Fails to Open Disk Candidates

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ASMLib Seems Good In my grid installation plan for 18c database, I use ASMLib to make device path persistent for ASM candidate disks. As a result, oracleasm should be able to recognize those disks as expected. [root@primary01 ~]# oracleasm listdisks ASMDISK01 ASMDISK02 [root@primary01 ~]# oracleasm-discover Using ASMLib from /opt/oracle/extapi/64/asm/orcl/1/libasm.so [ASM Library – Generic Linux, version […]
ASM

How to Resolve INS-30502 No ASM disk group found

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This error is quite strange and thrown during grid infrastructure installation.INS-30502 No ASM disk group found.Why can not oracle access any ASM disk groups? How can it be? I tried several ways to solve the problem, only the last solution worked.Switching the group of owner of ASM disks from asmadmin to oinstall whcih is oracle default group. Not […]
ASM

How to Add Disks into ASM on Enterprise Linux 5

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There is a potential risk when adding disks, that is, you could mistakenly erase the wrong disks for ASM candidates. So, our first step is to make sure the candidates are not used. In the following example, we are planning to add following 4 disks into ASM./dev/disk/asm/disk05/dev/disk/asm/disk06/dev/disk/asm/disk07/dev/disk/asm/disk08Make sure the candidates are not used by ASM […]