Oracle Database Errors or Warnings from Error ORA-30493 to ORA-30508

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ORA-30493: The percentile value should be a number between 0 and 1.
Cause: A percentile value for PERCENTILE_CONT or PERCENTILE_DISC function is specified out of range.
Action: Specify a value from [0,1].
ORA-30500: database open triggers and server error triggers cannot have BEFORE type
Cause: An attempt was made to create a trigger that fires before the database is open or before server errors, but these types of triggers are not supported.
Action: Do not attempt to create a trigger that fires before the database is open or before server errors.
ORA-30501: instance shutdown triggers cannot have AFTER type
Cause: An attempt was made to create a trigger that fires after an instance shutdown, but this type of trigger is not supported.
Action: Do not attempt to create a trigger that fires after an instance shutdown.

ORA-30502: system triggers cannot have INSERT, UPDATE, or DELETE as triggering events
Cause: An attempt was made to create a system trigger with INSERT, UPDATE, or DELETE triggering events, but this type of trigger is not supported because a system trigger does not have a base table.
Action: Do not attempt to create a system trigger with INSERT, UPDATE, or DELETE triggering events.
ORA-30503: system triggers cannot have a REFERENCING clause
Cause: An attempt was made to use a REFERENCING clause with a system trigger, but this type of trigger is not supported because a system triggers does not have a base table.
Action: Do not use a REFERENCING clause with a system trigger.
ORA-30504: system triggers cannot have a FOR EACH ROW clause
Cause: An attempt was made to use a FOR EACH ROW clause with a system trigger, but this type of trigger is not supported because a system triggers does not have a base table.
Action: Do not use a FOR EACH ROW clause with a system trigger.

ORA-30505: system triggers should not reference a column in a WHEN clause
Cause: An attempt was made to use a WHEN clause to reference a column with a system trigger, but this type of trigger is not supported because a system trigger does not have a base table.
Action: Change the WHEN clause to an appropriate clause.
ORA-30506: system triggers cannot be based on tables or views
Cause: An attempt was made to base a system trigger on a table or a view.
Action: Make sure the type of the trigger is compatible with the base object.
ORA-30507: normal triggers cannot be based on a schema or a database
Cause: An attempt was made to base a normal trigger on a schema or a database, but normal triggers can be based only on tables or views.
Action: Make sure the type of the trigger is compatible with the base object.
ORA-30508: client logon triggers cannot have BEFORE type
Cause: An attempt was made to create a trigger that fires before logon. This type of trigger is not supported.
Action: Do not attempt to create a trigger that fires before logon.

Above are list of Oracle Database Errors or Warnings from Error ORA-30493 to ORA-30508 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.

 

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