11g Data Guard Broker DGMGRL

11g Data Guard Broker DGMGRL Configuration quick steps

This note describes the commands used to create a Data Guard broker configuration using the command line dgmgrl interface. This can also be done via the Enterprise Manager Grid Control GUI as well and the assumption is that there is a Physical Standby database in place and redo transport and redo apply have already been configured and that both the Primary and Standby database are in sync.

Primary Database: genoa1_js

Standby Database: genoa1_fc

On both Primary as well as Standby database start the Data Guard Broker process

SQL> ALTER SYSTEM SET DG_BROKER_START=TRUE SCOPE=BOTH;

System altered.

Edit the listener.ora on both nodes to add a static entry for DGMGRL

This is to prevent the ORA-12154 error which can be observed on startup of the standby database after performing a switchover.

Ensure that the GLOBAL_DBNAME is set to db_unique_name_DGMGRL.db_domain

SID_LIST_LISTENER =
  (SID_LIST =
 (SID_DESC =
        (GLOBAL_DBNAME = genoa1_js_dgmgrl)
        (ORACLE_HOME = /u01/oracle/product/11.1.0/db_1)
        (SID_NAME = genoa1)
        )
)

Create the configuration

genoa1:/u01/oracle> dgmgrl
DGMGRL for IBM/AIX RISC System/6000: Version 11.1.0.7.0 - 64bit Production

Copyright (c) 2000, 2005, Oracle. All rights reserved.

Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys/xxxx
Connected.
DGMGRL> CREATE CONFIGURATION 'GenesisDR'
> AS
> PRIMARY DATABASE IS 'genoa1_js'
> CONNECT IDENTIFIER IS 'genoa1_js'
> ;
Configuration "GenesisDR" created with primary database "genoa1_js"

Add the Standby database to the configuration

DGMGRL>  ADD DATABASE
> 'genoa1_fc'
> AS
> CONNECT IDENTIFIER IS 'genoa1_fc'
> ;
Database "genoa1_fc" added

DGMGRL> SHOW CONFIGURATION

Configuration
  Name:                GenesisDR
  Enabled:             NO
  Protection Mode:     MaxAvailability
  Databases:
    genoa1_js - Primary database
    genoa1_fc - Physical standby database

Fast-Start Failover: DISABLED

Current status for "GenesisDR":
DISABLED

Enable the configuration

DGMGRL> ENABLE CONFIGURATION
Enabled.

DGMGRL> SHOW CONFIGURATION

Configuration
  Name:                GenesisDR
  Enabled:             YES
  Protection Mode:     MaxAvailability
  Databases:
    genoa1_js - Primary database
    genoa1_fc - Physical standby database

Fast-Start Failover: DISABLED

Current status for "GenesisDR":
SUCCESS

View the Standby and Primary database properties

DGMGRL> show database genoa1_js

Database
  Name:            genoa1_js
  Role:            PRIMARY
  Enabled:         YES
  Intended State:  TRANSPORT-ON
  Instance(s):
    genoa1

Current status for "genoa1_js":
SUCCESS

DGMGRL>  show database genoa1_fc

Database
  Name:            genoa1_fc
  Role:            PHYSICAL STANDBY
  Enabled:         YES
  Intended State:  APPLY-ON
  Instance(s):
    genoa1

Current status for "genoa1_fc":
SUCCESS

DGMGRL> show database verbose genoa1_fc

Database
  Name:            genoa1_fc
  Role:            PHYSICAL STANDBY
  Enabled:         YES
  Intended State:  APPLY-ON
  Instance(s):
    genoa1

  Properties:
    DGConnectIdentifier             = 'genoa1_fc'
    ObserverConnectIdentifier       = ''
    LogXptMode                      = 'SYNC'
    DelayMins                       = '0'
    Binding                         = 'OPTIONAL'
    MaxFailure                      = '0'
    MaxConnections                  = '1'
    ReopenSecs                      = '300'
    NetTimeout                      = '30'
    RedoCompression                 = 'DISABLE'
    LogShipping                     = 'ON'
    PreferredApplyInstance          = ''
    ApplyInstanceTimeout            = '0'
    ApplyParallel                   = 'AUTO'
    StandbyFileManagement           = 'AUTO'
    ArchiveLagTarget                = '0'
    LogArchiveMaxProcesses          = '4'
    LogArchiveMinSucceedDest        = '1'
    DbFileNameConvert               = ''
    LogFileNameConvert              = ''
    FastStartFailoverTarget         = ''
    StatusReport                    = '(monitor)'
    InconsistentProperties          = '(monitor)'
    InconsistentLogXptProps         = '(monitor)'
    SendQEntries                    = '(monitor)'
    LogXptStatus                    = '(monitor)'
    RecvQEntries                    = '(monitor)'
    HostName                        = 'drou037'
    SidName                         = 'genoa1'
    StaticConnectIdentifier         = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=drou037)

(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=genoa1_fc_DGMGRL)(INSTANCE_NAME=genoa1)(SERVER=DEDICATED)))'
    StandbyArchiveLocation          = 'USE_DB_RECOVERY_FILE_DEST'
    AlternateLocation               = ''
    LogArchiveTrace                 = '0'
    LogArchiveFormat                = '%t_%s_%r.dbf'
    LatestLog                       = '(monitor)'
    TopWaitEvents                   = '(monitor)'

Current status for "genoa1_fc":
SUCCESS

Change the properties of a configured databaase

DGMGRL> EDIT DATABASE 'genoa1_js' SET PROPERTY 'LogXptMode'='SYNC';
Property "LogXptMode" updated

Performing a switchover

Note: In this case, currently the Primary Database is genoa1_fc and the Standby database is genoa1_js.

DGMGRL> switchover to 'genoa1_js'
Performing switchover NOW, please wait...
New primary database "genoa1_js" is opening...
Operation requires shutdown of instance "genoa1" on database "genoa1_fc"
Shutting down instance "genoa1"...
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "genoa1" on database "genoa1_fc"
Starting instance "genoa1"...
ORACLE instance started.
Database mounted.
Switchover succeeded, new primary is "genoa1_js"

DGMGRL> SHOW CONFIGURATION;

Configuration
  Name:                GenesisDR
  Enabled:             YES
  Protection Mode:     MaxAvailability
  Databases:
    genoa1_js - Primary database
    genoa1_fc - Physical standby database

Fast-Start Failover: DISABLED

Current status for "GenesisDR":
SUCCESS

Monitoring the Data Guard Broker Configuration

If we receive any error or warnings we cab obtain more information about the same ny running the commands as shown below. In this case there is no output seen because currently we are not experiencing any errors or warning.

DGMGRL> show database genoa1_js statusreport
STATUS REPORT
       INSTANCE_NAME   SEVERITY ERROR_TEXT

DGMGRL>  show database genoa1_js logxptstatus
LOG TRANSPORT STATUS
PRIMARY_INSTANCE_NAME STANDBY_DATABASE_NAME               STATUS
              genoa1            genoa1_fc

DGMGRL> show database genoa1_js InconsistentProperties
INCONSISTENT PROPERTIES
   INSTANCE_NAME        PROPERTY_NAME         MEMORY_VALUE         SPFILE_VALUE         BROKER_VALUE

Sobre Alexandre Pires

ORACLE OCS Goldengate Specialist, OCE RAC 10g R2, OCP 12C, 11g, 10g , 9i e 8i - Mais de 25 anos de experiência na área de TI. Participei de projetos na G&P alocado na TOK STOK, EDINFOR alocado na TV CIDADE "NET", 3CON Alocado no PÃO DE AÇUCAR, DISCOVER alocado na VIVO, BANCO IBI e TIVIT, SPC BRASIL, UOLDIVEO alocado no CARREFOUR e atualmente na ORACLE ACS atendendo os seguintes projetos: VIVO, CLARO, TIM, CIELO, CAIXA SEGUROS, MAPFRE, PORTO SEGURO, SULAMERICA, BRADESCO SEGUROS, BANCO BRADESCO, BASA, SANTANDER, CNJ, TSE, ELETROPAULO, EDP, SKY, NATURA, ODEBRESHT, NISSEI, SICREDI, CELEPAR, TAM, TIVIT, IBM, SMILES, CELEPAR, SERPRO,OKI,BANCO PAN, etc
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