Database Error Messages

Release
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  • 23ai
  • 21c
  • 19c
Updated
Jun 24, 2024

ORA-16857

member disconnected from redo source for longer than specified threshold

Cause

The amount of time the member was disconnected from the redo source exceeded the value specified by the TransportDisconnectedThreshold configurable database property caused by a lack of network connectivity between the redo source and the member.


Action

Ensure that there is network connectivity between the redo source and the member and that the redo source is working properly.