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Former Member
Aug 03, 2015 at 09:51 PM

Error: ORA-16820: fast-start failover observer is no longer observing this database

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Hello,

I am facing an issue with dataguard on my oracle.

The dataguard observer is running on a separate host - other than the primary and the standby/auxillary.

Find the commands output as below.

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

DGMGRL> show configuration verbose

Configuration - SID

Protection Mode: MaxAvailability

Databases:

SID_HOSTNAME - Primary database

Error: ORA-16820: fast-start failover observer is no longer observing this database

SID_HOSTNAME - (*) Physical standby database

Error: ORA-16820: fast-start failover observer is no longer observing this database

(*) Fast-Start Failover target

Properties:

FastStartFailoverThreshold = '240'

OperationTimeout = '30'

FastStartFailoverLagLimit = '30'

CommunicationTimeout = '180'

ObserverReconnect = '0'

FastStartFailoverAutoReinstate = 'TRUE'

FastStartFailoverPmyShutdown = 'TRUE'

BystandersFollowRoleChange = 'ALL'

ObserverOverride = 'FALSE'

ExternalDestination1 = ''

ExternalDestination2 = ''

PrimaryLostWriteAction = 'CONTINUE'

Fast-Start Failover: ENABLED

Threshold: 240 seconds

Target: SID_STDBYHOST

Observer: thirdhost _observer

Lag Limit: 30 seconds (not in use)

Shutdown Primary: TRUE

Auto-reinstate: TRUE

Observer Reconnect: (none)

Observer Override: FALSE

Configuration Status:

ERROR

--->

DGMGRL> show configuration

Configuration - sid

Protection Mode: MaxAvailability

Databases:

sid_primary - Primary database

Error: ORA-16820: fast-start failover observer is no longer observing this database

sid_stdby - (*) Physical standby database

Error: ORA-16820: fast-start failover observer is no longer observing this database

Fast-Start Failover: ENABLED

Configuration Status:

ERROR

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

Now My doubt is to start the observer , should i login into the observer host or i can start it from either the primary or standby.

If i can start it from one of these (prim/stby) ,can i do this as below:

------> % dgmgrl -logfile observer.log / "start observer"

-------> START OBSERVER; from DGMGRL prompt;

Please help me on this.

Thanks and regards,

uday.