18.6.2 Viewing Triggers

TRIGGER_NAME

The name of the trigger

TRIGGER_TYPE

The type of the trigger; you can specify:

For DML triggers: BEFORE_STATEMENT, BEFORE EACH ROW, AFTER EACH ROW, or AFTER STATEMENT.

For DDL triggers: BEFORE EVENT or AFTER EVENT.

For INSTEAD OF triggers: INSTEAD OF.

For AFTER_SUSPEND triggers: AFTER EVENT.

TRIGGERING EVENT

The event that causes the trigger to fire:

For DML triggers: UPDATE, INSERT, or DELETE

For DDL triggers: The DDL operation (see full list in the DDL trigger section of this chapter)

For database event triggers: ERROR, LOGON, LOGOFF, STARTUP, or SHUTDOWN

For INSTEAD OF triggers: INSERT, UPDATE, or DELETE

For AFTER SUSPEND triggers: SUSPEND

TABLE_OWNER

This column contains different information depending on the type of trigger.

For DML triggers: The name of the owner of the table to which the trigger is attached.

For DDL triggers: If database-wide then SYS; otherwise, the owner of the trigger

For database event triggers: If database-wide then SYS; otherwise, the owner of the trigger

For INSTEAD OF triggers: The owner of the view to which the trigger is attached

For AFTER SUSPEND triggers: If database-wide then SYS; otherwise, the owner of the trigger

BASE_OBJECT_TYPE

The type of object to which the trigger is attached.

For DML triggers: TABLE

For DDL triggers: SCHEMA or DATABASE

For database event triggers: SCHEMA or DATABASE

For INSTEAD OF triggers: VIEW

For AFTER SUSPEND triggers: SCHEMA or DATABASE

TABLE_NAME

For DML triggers: The name of the table the trigger is attached to.

Other types of triggers: NULL

REFERENCING_NAMES

For DML (row-level) triggers: The clause used to define the aliases for the OLD and NEW records

For other types of triggers: The text "REFERENCING NEW AS NEW OLD AS OLD"

WHEN_CLAUSE

For DML triggers: The trigger's conditional firing clause

STATUS

Trigger's status (ENABLED or DISABLED)

ACTION_TYPE

Indicates whether the trigger executes a call (CALL) or contains PL/SQL (PL/SQL).

TRIGGER_BODY

Text of the trigger body (LONG column)