ORA-31496: must use DBMS_CDC_PUBLISH.DROP_CHANGE_TABLE

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ORA-31496: must use DBMS_CDC_PUBLISH.DROP_CHANGE_TABLE to drop
change tables
Cause: An attempt was madeto use the SQL command DROP TABLE for change
tables, but DROP TABLE is not supported for change tables.
Action: Use theDBMS_CDC_PUBLISH.DROP_CHANGE_TABLE procedure
instead of the DROP TABLE command.
ORA-31497: invalidvalue specified for first_scn
Cause: The first_scn was notgreater than zero or was less than the previous value
of first_scn.
Action: Check the value offirst_scn. Correct it to make sure it is an integer greater
than zero and greater than any previous value for this change source.
ORA-31498:description and remove_description cannot both be specified
Cause: The description andremove_description parameters were both specified.
Action: Check the values ofdescription and remove_description. Correct call to
only supply one of these values.
ORA-31499: null valuespecified for required parameter string
Cause