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PURPOSE
——-

How to safely remove a Data Guard Broker configuration.

SCOPE & APPLICATION
——————-

This applies to all DBAs who wish to remove and desactive a
Data Guard Broker configuration.

Removing the Configuration
—————————-

1) Remove the Data Guard Broker Configuration

a) Using the Commandline DGMGRL:

- Connect to the Primary Database
DGMGRL> connect sys/@
- Remove the Data Guard Broker Configuration
DGMGRL> remove configuration;

b) Using Data Guard Manager or Grid Control:

Follow the Wizard as mentioned in the Chapter
‘Scenarios Using Oracle Enterprise Manager’
of the Data Guard Broker Guide of each Database Version.

2) On the primary database set dg_broker_start=false:

SQL> show parameter dg_broker

NAME                                 TYPE        VALUE
———————————— ———– ——————————
dg_broker_config_file1               string      ?/dbs/dr1@.dat
dg_broker_config_file2               string      ?/dbs/dr2@.dat
dg_broker_start                      boolean     TRUE
SQL>
SQL> alter system set dg_broker_start=false scope=both;

System altered.

SQL>  show parameter dg_broker

NAME                                 TYPE        VALUE
———————————— ———– ——————————
dg_broker_config_file1               string      ?/dbs/dr1@.dat
dg_broker_config_file2               string      ?/dbs/dr2@.dat
dg_broker_start                      boolean     FALSE
SQL>

3) On the primary disable any archive destinations that are archiving to the standby:

SQL> select dest_id,destination,status
2  from v$archive_dest
3  where target=’STANDBY’;

DEST_ID
———-
DESTINATION
——————————————————————————–
STATUS
———
2
(DESCRIPTION=(ADDRESS_LIST = (ADDRESS=(PROTOCOL=tcp)(HOST=hasunclu2.us.oracle.co
m)(PORT=1521)))(CONNECT_DATA=(SID=DG920phy)(ORACLE_HOME=/u03/oracle/9.2.0)(SERVE
R=DEDICATED)))
VALID

SQL> alter system set log_archive_dest_state_2=defer scope=both;

System altered.

SQL>

4) on the standby set the dg_broker_start parameter to false:

SQL> show parameter dg_broker

NAME                                 TYPE        VALUE
———————————— ———– ——————————
dg_broker_config_file1               string      ?/dbs/dr1@.dat
dg_broker_config_file2               string      ?/dbs/dr2@.dat
dg_broker_start                      boolean     TRUE
SQL> alter system set dg_broker_start=false scope=both;

System altered.

SQL>

5) On both system rename the metadata files (if they exist):

oracle@hasunclu1:/u03/oracle/9.2.0/dbs> mv dr1DG920.dat dr1DG920.back
oracle@hasunclu1:/u03/oracle/9.2.0/dbs> mv dr2DG920.dat dr2DG920.back

RELATED DOCUMENTS
——————–

Oracle® Data Guard Broker Guide