The following solutions apply to problems with role transitions (failover, reinstate, and switchover) in an Oracle Database Cloud Service deployment hosting an Oracle Data Guard configuration.
A message in the Activity area indicates that the reinstate operation failed
"Successfully Reinstated" is displayed after the reinstate, but the Activity area on the Overview page indicates that the reinstate operation failed.
Perform the following steps to resolve this discrepancy:
On the Database Service console Overview page, click the Refresh Configuration icon.
Refresh the Overview page.
Click the Refresh Configuration icon again and observe that the Database Role has changed from Reinstate to Standby.
You can ignore the message in the Activity area indicating that the reinstate failed.
A message indicates a problem with the SYS password on the standby database
If you did not use the
database changepassword subcommand of the
dbaascli utility to change the password of the
SYS user in your Oracle Data Guard configuration, the password file on the standby database may not have been updated correctly. See Changing the SYS Password for detailed information on changing the
SYS user’s password.
After a role transition operation, I get an ORA-16792 warning when I check the status of the configuration
After attempting a role transition, both the DGMGRL
SHOW CONFIGURATION command and the dbaascli
dataguard status command report the warning: "ORA-16792: configurable property value is inconsistent with database setting."
Perform the following steps to resolve the inconsistent setting warning:
Connect as the
oracleuser to the compute node hosting the primary database. For detailed instructions, see Connecting to a Compute Node Through Secure Shell (SSH).
$ dgmgrl /
Use the DGMGRL
SHOW DATABASEcommand to determine which Data Guard broker property is inconsistent with the database setting.
DGMGRL> SHOW DATABASE 'database-name' 'InconsistentProperties';
database-nameis the name of the primary database (SID).
DGMGRL> SHOW DATABASE 'ORCL' 'InconsistentProperties'; INCONSISTENT PROPERTIES INSTANCE_NAME PROPERTY_NAME MEMORY_VALUE SPFILE_VALUE BROKER_VALUE ORCL ArchiveLagTarget 0 0
Use the DGMGRL
EDIT DATABASEcommand to reset the Data Guard broker property value, which in turn sets the value in the server parameter file (SPFILE).
DGMGRL> EDIT DATABASE 'database-name' SET PROPERTY 'property-name'=value;Where:
database-nameis the name of the database (SID)
property-nameis the name of the Data Guard broker property displayed in the output from the
valueis the value displayed in
MEMORY_VALUEin the output from the
DGMGRL> EDIT DATABASE 'ORCL' SET PROPERTY 'ArchiveLagTarget'=0; Property "ArchiveLagTarget" updated
Exit from DGMGRL and close your connection to the compute node.