The following is the ORA-19726 error message, you can learn the cause and solution of the Oracle database error.
ORA-19726 cannot plug data [string] at level string into database running at compatibility level string
Cause: Some of the data in the pluggable set requires a compatibility level higher than what is currently allowed by the database. The string in square bracket is the name of the compatibility type associated with the data.
Solution: Raise the value of the COMPATIBLE initialization parameter and retry the operation.
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