文档解释
ORA-15217: missing or invalid timeout value after DROP AFTER
Cause: The command did not specify a valid timeout value after the DROP AFTER clause.
Action: Specify a valid timeout value after the DROP AFTER clause.
ORA-15217: missing or invalid timeout value after DROP AFTER
Cause: The command did not specify a valid timeout value after the DROP AFTER clause.
Action: Specify a valid timeout value after the DROP AFTER clause.