Oracle Administration ASM

This SQL code instructs Oracle to perform a thorough check of all disks within the diskgroup named data1 Check the internal consistency of a diskgroup SQL Code 1alter diskgroup data1 check all 2/ Sample Oracle Output 1no rows selected 2SQL> Description of the Oracle Database SQL code Purpose: To initiate a …

Monitoring ASM Operations in Oracle Database, Using thev$asm_operationView SQL Code 1select * 2from v$asm_operation 3/ Mount/dismount disk groups 1alter diskgroup all mount 2/ 1alter diskgroup data1 mount 2/ 1alter diskgroup all dismount 2/ 1alter diskgroup data1 dismount 2/ Description of the Oracle Database SQL code …

Removing a Disk Group Permanently in Oracle Database, The drop diskgroup Command SQL Code 1drop diskgroup <name> including contents 2/ Description of the Oracle Database SQL code Purpose: The primary purpose of this SQL code is to permanently remove an entire disk group, identified by its name, from the Oracle database …

Expanding Storage Capacity in Oracle Database, Adding a Disk to Diskgroup Data1 SQL Code Note: Wildcards can be used for raw device names (eg. raw* 1alter diskgroup data1 2add disk '/dev/raw/raw4' 3/ Sample Oracle Output 1no rows selected 2SQL> Description of the Oracle Database SQL code Purpose: The primary purpose of …

Creating an ASM Disk Group with External Redundancy in Oracle SQL Code 1create diskgroup data1 2external redundancy 3disk '/dev/raw/raw1' 4/ Or with multiple raw partitions SQL Code 1create diskgroup data1 2external redundancy 3disk '/dev/raw/raw1', '/dev/raw/raw2' 4/ Or with multiple fail groups... SQL Code 1create …

Querying ASM Disk Information in Oracle A disk group that reports plenty of free space can still be one disk failure away from trouble, and a LUN the storage team says is ready can still be invisible to ASM. Both show up in one query against v$asm_disk: the per-disk free space, and the group 0 rows for disks not yet in …

Visualizing Disk Groups in Oracle ASM with SQL Purpose V$ASM_DISK is the view that lists every disk the Oracle ASM instance finds, including disks that are not part of any disk group. The query below reads six of its columns and sorts the rows by disk group number. The result is a plain text listing in SQL*Plus, one …

Checking Cluster Health with crsctl check cssd SQL Command 1crsctl check cssd Purpose: To verify the status and health of the Cluster Synchronization Services (CSS) daemon (cssd), a crucial component of Oracle Clusterware. It's typically used in Oracle Real Application Clusters (RAC) and Oracle Automatic Storage …