Please follow the below steps to resolve.
From within DGMGRL utility I get the following error, on a regular basis.
DGMGRL> show configuration
Configuration - data_dg_config
Protection Mode: MaxPerformance
Databases:
data_dgs - Primary database
data_dgp - Physical standby database
Warning: ORA-16857: standby disconnected from redo source for longer than specified threshold
Fast-Start Failover: DISABLED
Configuration Status:
WARNING
After sometime if i ran the same it seems to be fine.
DGMGRL> show configuration
Configuration - data_dg_config
Protection Mode: MaxPerformance
Databases:
data_dgs - Primary database
data_dgp - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
From within DGMGRL utility I get the following error, on a regular basis.
DGMGRL> show configuration
Configuration - data_dg_config
Protection Mode: MaxPerformance
Databases:
data_dgs - Primary database
data_dgp - Physical standby database
Warning: ORA-16857: standby disconnected from redo source for longer than specified threshold
Fast-Start Failover: DISABLED
Configuration Status:
WARNING
After sometime if i ran the same it seems to be fine.
DGMGRL> show configuration
Configuration - data_dg_config
Protection Mode: MaxPerformance
Databases:
data_dgs - Primary database
data_dgp - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
This error disappears for a few seconds. Then if I retype 'show configuration' it pops up again, and so on..
Please find the below fix.
- To increase TransportDisconnectedThreshold database property:
DGMGRL> EDIT DATABASE testfo SET PROPERTY TransportDisconnectedThreshold='120';
- SOLUTION - Setting 'TransportDisconnectedThreshold' to 0 seconds will disable the alert. Alternatively we can set the property to a higher value