How do you resolve a mutating table error?
Table of Contents
How do you resolve a mutating table error?
Fixing the mutating table error
- First, declare an array of customer record that includes customer id and credit limit.
- Second, collect affected rows into the array in the row-level trigger.
- Third, update each affected row in the statement-level trigger.
How can a mutating table error be avoided?
Use autonomous transactions – You can avoid the mutating table error by marking your trigger as an autonomous transaction, making it independent from the table that calls the procedure.
What is a mutating table error?
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.
What is mutating error how do you avoid it?
Mutating error normally occurs when we are performing some DML operations and we are trying to select the affected record from the same trigger. So basically we are trying to select records in the trigger from the table that owns the trigger. This creates inconsistency and Oracle throws a mutating error.
What triggers mutating?
Mutating trigger is trigger that is currently being modified by DML opertion. For eg.,You created a trigger trigger1 on table1, it should fire after update for each row. And you wrote some update statement on the same table (table1) inside the trigger .
What is mutating table in SQL?
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.
What is the mutating table and constraining table?
A mutating table is a table that is currently being modified by an update, delete, or insert statement. When a trigger tries to reference a table that is in state of flux (being changed), it is considered “mutating” and raises an error since Oracle should not return data that has not yet reached its final state.
Is invalid and failed re validation Ora 04098?
This ORA-04098 errors are related with the trigger was attempted to be retrieved for execution and was found to be invalid. This also means that compilation/authorization failed for the trigger. Options are to resolve the compilation/authorization errors. To solve this error, disable the trigger, or drop the trigger.
What are mutating trigger?
How do you solve ORA 04098 trigger invalid and fail re validation?
ORA-04098: trigger “string….trigger “string. string” is invalid and failed re-validation
- Check the syntax of the trigger.
- If the syntax is correct, ensure necessary table privileges have been granted.
- Recompile the trigger.
- Verify that the trigger is enabled.
What is difference between row level trigger and statement level trigger?
Row level triggers executes once for each and every row in the transaction. Statement level triggers executes only once for each single transaction.
Can we call SP in trigger?
A: Yes, we can call stored procedure inside the trigger.
