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How to re-create oracle RAC management database

 

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How to re-create oracle RAC -MGMTDB database 

Verify Status of -MGMTDB 

prompt@node1:~/ [+ASM1]  srvctl status mgmtdb

Database is enabled

Instance -MGMTDB is running on node node1


prompt@node1:~/ [+ASM1] export ORACLE_SID=-MGMTDB

prompt@node1:~/ [-MGMTDB] sqlplus "/as sysdba"

Connected to:

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

Version 19.16.0.0.0


SQL> show pdbs


    CON_ID CON_NAME                       OPEN MODE  RESTRICTED

---------- ------------------------------ ---------- ----------

         2 PDB$SEED                       READ ONLY  NO

         3 MGMT_PDB_01                 READ WRITE NO

SQL> select comp_id,status from dba_registry;


COMP_ID                        STATUS

------------------------------ --------------------------------------------

CATALOG                        VALID

CATPROC                        VALID

RAC                            OPTION OFF

XDB                            VALID

OWM                            VALID


Stop and disable CRF component as root user. ( on all the nodes as root user)


prompt@node1:~> # /grid/product/19c/grid/bin/crsctl stop res ora.crf -init

CRS-2673: Attempting to stop 'ora.crf' on 'node1'

CRS-2677: Stop of 'ora.crf' on 'node1' succeeded

prompt@node1:~> # /grid/product/19c/grid/bin/crsctl modify res ora.crf -attr ENABLED=0 -init


node 2:

prompt@node1:~> # /grid/product/19c/grid/bin/crsctl stop res ora.crf -init

CRS-2673: Attempting to stop 'ora.crf' on 'node1'

CRS-2677: Stop of 'ora.crf' on 'node1' succeeded

prompt@node1:~> # /grid/product/19c/grid/bin/crsctl modify res ora.crf -attr ENABLED=0 -init


drop -MGMTDB DB


prompt@node1:/grid/product/19c/grid/bin/ [+ASM1] dbca -silent -deleteDatabase -sourceDB -MGMTDB

[WARNING] [DBT-19202] The Database Configuration Assistant will delete the Oracle instances and datafiles for your database. All information in the database will be destroyed.

Prepare for db operation

32% complete

Connecting to database

35% complete

39% complete

42% complete

45% complete

48% complete

52% complete

65% complete

Updating network configuration files

68% complete

Deleting instance and datafiles

84% complete

100% complete

Database deletion completed.

Look at the log file "/ora_app/cfgtoollogs/dbca/_mgmtdb/_mgmtdb0.log" for further details.


Create  -MGMTDB DB (only on one node)

prompt@node1:/grid/product/19c/grid/bin/ [+ASM1] dbca -silent -createDatabase -sid -MGMTDB -createAsContainerDatabase true -templateName MGMTSeed_Database.dbc -gdbName _mgmtdb -storageType ASM -diskGroupName +GIMR -datafileJarLocation /grid/product/19c/grid/assistants/dbca/templates -characterset AL32UTF8 -autoGeneratePasswords -skipUserTemplateCheck

Prepare for db operation

10% complete

Registering database with Oracle Grid Infrastructure

14% complete

Copying database files

43% complete

Creating and starting Oracle instance

45% complete

49% complete

54% complete

58% complete

62% complete

Completing Database Creation

66% complete

69% complete

71% complete

Executing Post Configuration Actions

100% complete

Database creation complete. For details check the logfiles at:

 /ora_app/cfgtoollogs/dbca/_mgmtdb.

Database Information:

Global Database Name:_mgmtdb

System Identifier(SID):-MGMTDB

Look at the log file "/ora_app/cfgtoollogs/dbca/_mgmtdb/_mgmtdb2.log" for further details.


create NEW MGMT pluggable DB 

 dbca -silent -createPluggableDatabase -sourceDB -MGMTDB -pdbName MGMT_PDB_01 -createPDBFrom RMANBACKUP -PDBBackUpfile /grid/product/19c/grid/assistants/dbca/templates/pdbseed.dfb -PDBMetadataFile /grid/product/19c/grid/assistants/dbca/templates/pdbseed.xml -createAsClone true

Prepare for db operation

13% complete

Creating Pluggable Database

15% complete

19% complete

23% complete

31% complete

39% complete

53% complete

Completing Pluggable Database Creation

60% complete

Executing Post Configuration Actions

100% complete

Pluggable database "MGMT_PDB_01" plugged successfully.

Look at the log file "/ora_app/cfgtoollogs/dbca/_mgmtdb/MGMT_PDB_01/_mgmtdb0.log" for further details.


Verify Status of -MGMTDB 

prompt@node1:~/ [+ASM1]  srvctl status mgmtdb

Database is enabled

Instance -MGMTDB is running on node node1


prompt@node1:~/ [+ASM1] export ORACLE_SID=-MGMTDB

prompt@node1:~/ [-MGMTDB] sqlplus "/as sysdba"

Connected to:

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

Version 19.16.0.0.0


SQL> show pdbs


    CON_ID CON_NAME                       OPEN MODE  RESTRICTED

---------- ------------------------------ ---------- ----------

         2 PDB$SEED                       READ ONLY  NO

         3 MGMT_PDB_01                 READ WRITE NO

SQL> select comp_id,status from dba_registry;


COMP_ID                        STATUS

------------------------------ --------------------------------------------

CATALOG                        VALID

CATPROC                        VALID

RAC                            OPTION OFF

XDB                            VALID

OWM                            VALID


Run the mgmtca config tool

$/grid/product/19c/grid/bin/mgmtca


Start and enable the CRF component ( ON BOTH NODES)– Run as root user

prompt@node1:~> # /grid/product/19c/grid/bin/crsctl modify res ora.crf -attr ENABLED=1 -init

prompt@node1:~> # /grid/product/19c/grid/bin/crsctl start res ora.crf -init

CRS-2672: Attempting to start 'ora.crf' on 'node1'

CRS-2676: Start of 'ora.crf' on 'node1' succeeded


prompt@node2:~> # /grid/product/19c/grid/bin/crsctl modify res ora.crf -attr ENABLED=1 -init

prompt@node2:~> # /grid/product/19c/grid/bin/crsctl start res ora.crf -init

CRS-2672: Attempting to start 'ora.crf' on 'node2'

CRS-2676: Start of 'ora.crf' on 'node2' succeeded


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