Defining autonomous transactions, PL-SQL Programming

Assignment Help:

Defining Autonomous Transactions

To define an autonomous transaction, you use the pragma (compiler directive) AUTONOMOUS_TRANSACTION. The pragma instructs the PL/SQL compiler to mark the routine as the autonomous (independent). In this context, the word routine involves:

(i) The top-level anonymous PL/SQL blocks

(ii)The local, packaged functions, and stand-alone & procedures

(iii) The methods of the SQL object type

(iv)A database triggers

You can code the pragma wherever in the declarative part of a routine. But, for the readability, code the pragma at the top of the part. The syntax is as shown:

PRAGMA AUTONOMOUS_TRANSACTION;

In the illustration below, you mark a packaged function as autonomous:

CREATE PACKAGE banking AS

...

FUNCTION balance (acct_id INTEGER) RETURN REAL;

END banking;

CREATE PACKAGE BODY banking AS

...

FUNCTION balance (acct_id INTEGER) RETURN REAL IS

PRAGMA AUTONOMOUS_TRANSACTION;

my_bal REAL;

BEGIN

...

END;

END banking;

Related Discussions:- Defining autonomous transactions

Pl/sql conditional control: if statements, Pl/sql Conditional Control: IF s...

Pl/sql Conditional Control: IF statements Frequently, it is necessary to take the alternative actions depending on the circumstances. The IF statement execute a series of statem

Need for dynamic sql - pl sql , Need for Dynamic SQL: You need dynamic...

Need for Dynamic SQL: You need dynamic SQL in the situations as follows: 1) You would like to execute a SQL data definition statement (like CREATE), a data control statemen

Close statement in pl sql, CLOSE Statement The CLOSE statement allows ...

CLOSE Statement The CLOSE statement allows the resources held by a cursor variable or open cursor to be reused. No more rows can be fetched from the cursor variable or closed

I need sql data base, I need SQL Data Base Project Description: Netwo...

I need SQL Data Base Project Description: Network SQL database and SQL Setup two 4 workstation Skills required are Data Entry, MySQL, SQL

Open-for statement, OPEN-FOR Statement The OPEN-FOR statements execute ...

OPEN-FOR Statement The OPEN-FOR statements execute the multi-row query related with a cursor variable. It also allocates the resources used by the Oracle to process the query a

Using default-declarations in sql, Using DEFAULT You can use the keyword...

Using DEFAULT You can use the keyword DEFAULT rather than that of the assignment operator to initialize the variables. For e.g. the declaration blood_type CHAR := ’O’; it can b

Wrapping and unwrapping in sql, Wrapping and unwrapping in SQL Operato...

Wrapping and unwrapping in SQL Operators WRAP and UNWRAP in connection with attributes whose declared types are tuple types. Example shows how extension and projection can be

Write a program, to write a heap sort program usin pl-sql

to write a heap sort program usin pl-sql

Calculate days between ordering and shipping, An analyst in the quality ass...

An analyst in the quality assurance office reviews the time lapse between receiving an order and shipping an order. Any orders that have not been shipped within a day of the order

Quantification in sql, Quantification in SQL To quantify something, as...

Quantification in SQL To quantify something, as the theory book has it, is to state its quantity, to say how many of it there are. For example, in Tutorial D the expression CO

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages