Question: How Do You Handle A Mutating Trigger In Oracle?

Is trigger part of transaction?

An insert is always within a transaction.

The trigger is always part of the transaction for the action that fires the trigger.

If an error occurs in the trigger that causes transaction rollback then the firing action will be rolled back too.

Triggers implicitly have XACT_ABORT on..

What is mutating in the trigger in Oracle?

A mutating table error (ORA-04091) occurs when a row-level trigger tries to examine or change a table that is already undergoing change (via an INSERT, UPDATE, or DELETE statement). In particular, this error occurs when a row-level trigger attempts to read or write the table from which the trigger was fired.

How do you avoid mutating table errors?

Avoiding Mutating triggers The Oracle mutating trigger error occurs when a trigger references the table that owns the trigger, resulting in the “ORA-04091: table name is mutating, trigger/function may not see it.” message. Don’t use triggers – The best way to avoid the mutating table error is not to use triggers.

What is mutating table in Oracle?

A mutating table is a table that is currently being modified by an UPDATE, DELETE, or INSERT statement, or it is a table that might need to be updated by the effects of a declarative DELETE CASCADE referential integrity constraint.

Can we call procedure in trigger in Oracle?

The SQL required to call a procedure from a trigger is the same SQL required to call a procedure from an SQL routine or dynamic compound statement. Write a basic CREATE TRIGGER statement specifying the desired trigger attributes. See the CREATE TRIGGER statement.

Can we commit inside a trigger?

Trigger should not commit and cannot commit. Committing in a trigger usually raises an exception unless it happens into autonomous transaction. When you open connection, Oracle creates session for it.