In this post, you’ll learn more about the Oracle ErrorORA-16783: cannot resolve gap for database string with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-16783: cannot resolve gap for database string
Reason for the Error ORA-16783: cannot resolve gap for database string
The primary database could not resolve a gap request from the specified standby database(s).
How to fix the Error ORA-16783: cannot resolve gap for database string ?
You can fix this error in Oracle by following the below steps
Copy the missing archived redo log files from either backups or from another database in the configuration that has the files to the standby database(s) missing the files.