Database Error Messages

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

ORA-16854

apply lag could not be determined

Cause

Apply lag could not be determined because either apply services were not running or there was no connectivity between the redo source and standby database.


Action

Start apply services if they are not running. Also, ensure that there is network connectivity between the redo source and standby databases and that the redo source is sending redo data to the standby database.