Why we use Pragma AUTONOMOUS_TRANSACTION in Oracle?

What is pragma AUTONOMOUS_TRANSACTION in procedure

The AUTONOMOUS_TRANSACTION pragma alters the behavior of a subprogram within a transaction, allowing it to perform SQL operations and commit or roll back those operations without affecting the data in the main transaction.

Can we use pragma AUTONOMOUS_TRANSACTION in trigger

The trigger functions as intended and has the pragma autonomous_transaction.

What is pragma Exception_init explain the usage

Instead of using the OTHERS handler, you can intercept any ORA- error and write a specific handler for it by using the pragma EXCEPTION_INIT. For more information, see “Associating a PL/SQL Exception with a Number: Pragma EXCEPTION_INIT.” Syntax.

What is a pragma in Oracle

A pragma, also known as a pseudo-instruction, is simply a directive to the compiler that passes information rather than transforming into a specific execution. The PRAGMA keyword is used to indicate that the remaining PL/SQL statement is a pragma.

What is the difference between autonomous items and accommodating items

1.) Autonomous items are transactions that are carried out for financial gain, whereas accommodating items are carried out to balance the balance of payments. 2.) Autonomous items involve the export of goods and services, whereas accommodating items involve the movement of official reserves.

Is it good to use limit keyword with bulk collect

The general recommendation for production code working with tables that may grow significantly in size is to avoid using SELECT BULK COLLECT INTO (an implicit query) and instead use the FETCH BULK COLLECT with a LIMIT clause.

Why do we use autonomous transaction

With autonomous transactions, you can leave the calling transactions context, carry out a separate transaction, and then come back to the calling transaction without changing its state. Since the autonomous transaction is unrelated to the calling transaction, only committed data can be shared by both transactions.Feb. 28, 2006

How do you avoid mutating errors

Fixing the mutating table error

1. Declare a customer record array first, including the customers ID and credit limit.
2. In the row-level trigger, gather the affected rows into an array.
3. Third, make a statement-level trigger update for each affected row.

What is autonomous transaction example

When an autonomous transaction is called, the original transaction (the calling transaction) is temporarily suspended. Autonomous transactions allow a single transaction to be divided into multiple commit/rollback transactions, each of which will be tracked for auditing purposes.

What are autonomous and accommodating transactions

Related Question & Answers: Autonomous transactions are those made in the balance of payments account that are unaffected by other transactions; accommodating transactions are those made to make up for deficits or surpluses in the balance of payments.

What are accommodating items

Accommodating Items, also known as “below the line items,” are transactions that are made to make up for a deficit or surplus in autonomous transactions, i.e., such transactions are determined by net consequences of autonomous transactions.

What is mutating error in Oracle

Dont use triggers – The best way to avoid the mutating table error is to not use triggers. The ORA-04091: table name is mutating, trigger/function may not see it. message is displayed when a trigger refers to the table that owns the trigger.

What is Savepoint in Oracle with example

For more information, see Overview of Transaction Processing in PL/SQL. The SAVEPOINT statement identifies and marks the current point in the processing of a transaction. With the ROLLBACK TO statement, savepoints undo portions of a transaction rather than the entire transaction.

What are the commands used for transaction control processing

COMMIT: The commit command is used to permanently save any transaction into the database. ROLLBACK: This command returns the database to the last committed state. TCL (Transaction Control Language): It also permits statements to be grouped together into logical transactions.

What is bulk collect in Oracle

FORALL: These are INSERT, UPDATE, and DELETE operations that use collections to change multiple rows of data very quickly. BULK COLLECT: These are SELECT statements that retrieve multiple rows with a single fetch, improving the speed of data retrieval.

What is Oracle performance tuning

In other words, performance tuning makes it easier to access and modify the data stored in the database with the goal of enhancing query response times and application operations. Performance tuning is the process of optimizing Oracle performance by streamlining the execution of SQL statements.

What is global temporary table in Oracle

The session-specific rows in a GTT can be preserved for the duration of the session because AI report tables are created using the ON COMMIT PRESERVE ROWS clause. Global Temporary Tables (GTTs) are Oracle tables with a data type of private, ensuring that data inserted by a session can be accessed by that session alone.

What is exception handling in PL SQL

When a PL/SQL error occurs during program execution—either explicitly by your program or implicitly by TimesTen—handle it by propagating it to the calling environment or trapping it with a handler.