Can we have COMMIT in trigger?

Can we have COMMIT inside Trigger? Yes, you can commit inside the trigger. But for this you have to make this trigger transaction to be an Independent transaction from its parent transaction, you can do this by using Pragma.

Can COMMIT ROLLBACK savepoint be used in database triggers?

We can’t COMMIT/ROLLBACK in DML triggers because transaction is handled manually after DML statement. However, database triggers seems to be an exception.

Can we use autonomous transaction in triggers?

Once started, an autonomous transaction is fully independent. Unlike regular triggers, autonomous triggers can contain transaction control statements such as COMMIT and ROLLBACK , and can issue DDL statements (such as CREATE and DROP ) through the EXECUTE IMMEDIATE statement.

Can we use exception in trigger?

A trigger exception (also known as a “blocking trigger”) is a kind of trigger that can be used to block another trigger’s ability to fire under certain conditions. For example, if a tag has a trigger to fire on all pages and a trigger exception that is set to “Page URL equals thankyou.

What are two main types of triggers?

There are two types of triggers.

  • BEFORE trigger: – This trigger is called before the execution of the DML statement.
  • After Trigger: – this trigger is called after once DML statement is executed.
  • Combination of triggers: – We can have combination of row, statement, BEFORE and AFTER triggers.

Do we need COMMIT after insert?

So yes, by default, if you’re just using INSERT , the records you insert will be committed, and there is no point trying to roll them back. (This is effectively the same as wrapping each statement between BEGIN and COMMIT .)

Can we rollback after commit?

After you commit the transaction, the changes are visible to other users’ statements that execute after the commit. You can roll back (undo) any changes made during the transaction with the ROLLBACK statement (see ROLLBACK.

What is the advantage of Pragma autonomous transaction?

For readability, code the pragma at the top of the section. Once started, an autonomous transaction is fully independent. It shares no locks, resources, or commit-dependencies with the main transaction. You can log events, increment retry counters, and so on, even if the main transaction rolls back.

How do you trigger an exception?

Throwing an exception is as simple as using the “throw” statement. You then specify the Exception object you wish to throw. Every Exception includes a message which is a human-readable error description.

What happens when an exception is triggered?

Exception handling is used to change the normal flow of the code execution if a specified error (exceptional) condition occurs. This is what normally happens when an exception is triggered: The current code state is saved. The code execution will switch to a predefined (custom) exception handler function.

What types of triggers?

What are the types of triggers?

  • DDL Trigger.
  • DML Trigger.
  • Logon Trigger.

What are the advantages of triggers?

Some of the prominent advantages of triggers are as follows:

  • Helps us to automate the data alterations.
  • Allows us to reuse the queries once written.
  • Provides a method to check the data integrity of the database.
  • Helps us to detect errors on the database level.
  • Allows easy auditing of data.