Raise Program Error Oracle
Example 11-5 Raising an Application Error with RAISE_APPLICATION_ERROR DECLARE num_tables NUMBER; BEGIN SELECT COUNT(*) INTO num_tables FROM USER_TABLES; IF num_tables < 1000 THEN /* Issue your own error code (ORA-20101) with oracle share|improve this question asked Nov 19 '09 at 2:56 Ricky 8,3982762100 I found a useful link for similar question. The final parameter passed to the procedure is a Boolean(true/false) that tells the procedure to add this error to the error stack or replace all errors in the stack with this Also, it can use the pragma EXCEPTION_INIT to map specific error numbers returned by raise_application_error to exceptions of its own, as the following Pro*C example shows: EXEC SQL EXECUTE /* Execute http://vealcine.com/error-in/raise-error-in-oracle-reports.php
The optional OTHERS handler catches all exceptions that the block does not name specifically. Aliasing problems with parameters PERFORMANCE Condition might cause performance problems. Learning Oracle Business Intelligence (OBIEE) Fun Required Reading Learn OBIEE EBS Install Guide Blog Archive ► 2016 (1) August (1) ► 2015 (2) July (1) April (1) ► 2014 (2) June ORA-01476 For Example: Suppose a NO_DATA_FOUND exception is raised in a proc, we can write a code to handle the exception as given below.
Remember, no matter how severe the error is, you want to leave the database in a consistent state and avoid storing any bad data. There are 3 types of Exceptions. Retrieving the Error Code and Error Message: SQLCODE and SQLERRM In an exception handler, you can use the built-in functions SQLCODE and SQLERRM to find out which error occurred and to With exceptions, you can reliably handle potential errors from many statements with a single exception handler: Example 10-2 Managing Multiple Errors With a Single Exception Handler DECLARE emp_column VARCHAR2(30) := 'last_name';
The RAISE_APPLICATION_ERROR built-in (defined in the DBMS_STANDARD package) should be used for just a single scenario: you need to communicate an application-specific error back to the user. SQLERRM returns the corresponding error message. NO_DATA_FOUND 01403 +100 A SELECT INTO statement returns no rows, or your program references a deleted element in a nested table or an uninitialized element in an index-by table. Raise_application_error In Triggers In Oracle That way, you can report errors to your application and avoid returning unhandled exceptions.
If you neglect to code a check, the error goes undetected and is likely to cause other, seemingly unrelated errors. Raise_application_error Vs Raise In PL/SQL, the pragma EXCEPTION_INIT tells the compiler to associate an exception name with an Oracle error number. WHEN sal_high THEN 13. You can define your own exceptions in the declarative part of any PL/SQL block, subprogram, or package.
This chapter contains these topics: Overview of PL/SQL Runtime Error Handling Advantages of PL/SQL Exceptions Summary of Predefined PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How Raise_application_error Error Number Range If no exception has been raised, SQLCODE returns zero and SQLERRM returns the message: ORA-0000: normal, successful completion. Once you know the error code, you can use it with pragma EXCEPTION_INIT and write a handler specifically for that error. Examples of internally defined exceptions include division by zero and out of memory.
Raise_application_error Vs Raise
Table 11-1 Predefined PL/SQL Exceptions Exception Name ORA Error SQLCODE Raised When ... Passing a VARCHAR2 value to a NUMBER column in an INSERT statement INFORMATIONAL Condition does not affect performance or correctness, but you might want to change it to make the code Oracle Raise Unlike variables, exceptions cannot appear in assignment statements or SQL statements. Pragma Exception_init And Raise Application Error If the company has zero earnings, the predefined exception ZERO_DIVIDE is raised.
Continuing after an Exception Is Raised An exception handler lets you recover from an otherwise fatal error before exiting a block. this page You can, however, declare the same exception in two different blocks. Scope Rules for PL/SQL Exceptions You cannot declare an exception twice in the same block. If you redeclare a global exception in a sub-block, the local declaration prevails. Raise_application_error(-20001
For example, the following declaration raises an exception because the constant credit_limit cannot store numbers larger than 999: DECLARE credit_limit CONSTANT NUMBER(3) := 5000; -- raises an exception BEGIN ... For example, in the Oracle Precompilers environment, any database changes made by a failed SQL statement or PL/SQL block are rolled back. In the following example, you declare an exception named past_due: DECLARE past_due EXCEPTION; Exception and variable declarations are similar. get redirected here Example 11-13 Retrying a Transaction After an Exception CREATE TABLE results (res_name VARCHAR(20), res_answer VARCHAR2(3)); CREATE UNIQUE INDEX res_name_ix ON results (res_name); INSERT INTO results VALUES ('SMYTHE', 'YES'); INSERT INTO results
Example 11-7 Using RAISE to Raise a Predefined Exception DECLARE acct_type INTEGER := 7; BEGIN IF acct_type NOT IN (1, 2, 3) THEN RAISE INVALID_NUMBER; -- raise predefined exception END IF; Raise Application Error In Sql Server I don't consolidate every exception I write into my ERROR package, only those exceptions that I want to bubble up unhandled to my C# code. But, if the need arises, you can use a locator variable to track statement execution, as follows: DECLARE stmt INTEGER := 1; -- designates 1st SELECT statement BEGIN SELECT ...
To work with PL/SQL warning messages, you use the PLSQL_WARNINGS initialization parameter, the DBMS_WARNING package, and the USER/DBA/ALL_PLSQL_OBJECT_SETTINGS views.
Otherwise, DECODE returns the price-to-earnings ratio. Handling Exceptions Raised in Handlers When an exception occurs within an exception handler, that same handler cannot catch the exception. If the transaction fails, control transfers to the exception handler, where you roll back to the savepoint undoing any changes, then try to fix the problem. Difference Between Pragma Exception_init And Raise_application_error In Oracle Passing the value of 'True' adds the error to the current stack, while the default is 'False'.
Exceptions can be internally defined (by the run-time system) or user defined. We can provide a name to this exception and handle it in the exception section as given below. If you redeclare a global exception in a sub-block, the local declaration prevails. useful reference Errors could also occur at other times, for example if a hardware failure with disk storage or memory causes a problem that has nothing to do with your code; but your
However, when an exception is raised inside a cursor FOR loop, the cursor is closed implicitly before the handler is invoked. We use advertisements to support this website and fund the development of new content. You can enable and disable entire categories of warnings (ALL, SEVERE, INFORMATIONAL, PERFORMANCE), enable and disable specific message numbers, and make the database treat certain warnings as compilation errors so that LOOP -- could be FOR i IN 1..10 LOOP to allow ten tries BEGIN -- sub-block begins SAVEPOINT start_transaction; -- mark a savepoint /* Remove rows from a table of survey
Example 11-1 calculates a price-to-earnings ratio for a company. Place the sub-block inside a loop that repeats the transaction. Suppose you used number constants instead of string constants to identify your exceptions and passed these to throw().