renamedg dgname=DATA newdgname=ORA_DATA verbose=true

OLD DISKGROUP NAME: DATA
NEW DISKGROUP NAME: ORA_DATA

[oracle@oracleagent:+ASM] sqlplus / as sysasm

SQL*Plus: Release 19.0.0.0.0 – Production on Wed Oct 20 16:38:25 2021
Version 19.12.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 – Production
Version 19.12.0.0.0

SYS@+ASM> alter diskgroup DATA dismount;
alter diskgroup DATA dismount
*
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15027: active use of diskgroup “DATA” precludes its dismount

SYS@+ASM> alter diskgroup DATA dismount force;

Diskgroup altered.

SYS@+ASM> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 – Production
Version 19.12.0.0.0
[oracle@oracleagent:+ASM] renamedg dgname=DATA newdgname=ORA_DATA verbose=true

Parameters in effect:

Old DG name : DATA
New DG name : ORA_DATA
Phases :
Phase 1
Phase 2
Discovery str : (null)
Clean : TRUE
Raw only : TRUE
renamedg operation: dgname=DATA newdgname=ORA_DATA verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk ASM:ASM Library – Generic Linux, version 2.0.12 (KABI_V2):ORCL:ORA_DATA_0001 with disk number:0 and timestamp (33120742 632048640)
Checking for hearbeat…
Re-discovering the group
Performing discovery with string:
Identified disk ASM:ASM Library – Generic Linux, version 2.0.12 (KABI_V2):ORCL:ORA_DATA_0001 with disk number:0 and timestamp (33120742 632048640)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:0
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for ORCL:ORA_DATA_0001
Modifying the header
Completed phase 2

[oracle@oracleagent:+ASM] sqlplus / as sysasm

SQL*Plus: Release 19.0.0.0.0 – Production on Wed Oct 20 16:41:16 2021
Version 19.12.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 – Production
Version 19.12.0.0.0

SYS@+ASM> alter diskgroup ORA_DATA mount force;

Diskgroup altered.

SYS@+ASM> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 – Production
Version 19.12.0.0.0
[oracle@oracleagent:+ASM] ps -ef | grep pmon
oracle 1547 1 0 Aug18 ? 00:02:44 asm_pmon_+ASM

[oracle@oracleagent:+ASM] asmcmd
ASMCMD> lsdg
State Type Rebal Sector Logical_Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED EXTERN N 512 512 4096 4194304 511996 511896 0 511896 0 N ORA_DATA/
ASMCMD>

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