Raise Application Error In Pl Sql
Verify experience! When called, raise_application_error ends the subprogram and returns a user-defined error number and message to the application. Oracle provides the raise_application_error procedure to allow you to raise custom error numbers within your applications. However, exceptions cannot propagate across remote procedure calls (RPCs). click site
In the following example, if the SELECT INTO statement raises ZERO_DIVIDE, you cannot resume with the INSERT statement: DECLARE pe_ratio NUMBER(3,1); BEGIN DELETE FROM stats WHERE symbol = 'XYZ'; SELECT price An application can call raise_application_error only from an executing stored subprogram (or method). Tips for Handling PL/SQL Errors In this section, you learn techniques that increase flexibility. Without exception handling, every time you issue a command, you must check for execution errors: BEGIN SELECT ... -- check for 'no data found' error SELECT ... -- check for 'no
Raise_application_error Vs Raise
To handle unexpected Oracle errors, you can use the OTHERS handler. 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 ... Example 10-6 Using RAISE to Force a User-Defined Exception DECLARE out_of_stock EXCEPTION; number_on_hand NUMBER := 0; BEGIN IF number_on_hand < 1 THEN RAISE out_of_stock; -- raise an exception that we defined
When an open host cursor variable is passed to a stored subprogram, the return types of the actual and formal parameters must be compatible. Raise_application_error(-20001 PL/SQL declares predefined exceptions globally in package STANDARD. The result of the exception when an appropriate employee ID is passed to the bind variable is printed below. 1. The keyword OTHERS cannot appear in the list of exception names; it must appear by itself.
In Example 10-13, the INSERT statement might raise an exception because of a duplicate value in a unique column. Raise Application Error In Oracle Triggers But the enclosing block cannot reference the name PAST_DUE, because the scope where it was declared no longer exists. Scope Rules for PL/SQL Exceptions You cannot declare an exception twice in the same block. ROWTYPE_MISMATCH The host cursor variable and PL/SQL cursor variable involved in an assignment have incompatible return types.
The built-in parameter SELF points to the object, and is always the first parameter passed to a MEMBER method. Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. Raise_application_error Vs Raise STORAGE_ERROR 06500 -6500 PL/SQL runs out of memory or memory has been corrupted. Oracle Raise A cursor must be closed before it can be reopened.
Unlike predefined exceptions, user-defined exceptions must be declared and must be raised explicitly by RAISE statements. If you find an error or have a suggestion for improving our content, we would appreciate your feedback. Not the answer you're looking for? http://vealcine.com/raise-application/raise-application-error-asp-net.php Unhandled exceptions can also affect subprograms.
If so, do it by making a call to a procedure declared with the PRAGMA AUTONOMOUS_TRANSACTION, so that you can commit your debugging information, even if you roll back the work Raise_application_error Sqlerrm Predefined PL/SQL Exceptions An internal exception is raised implicitly whenever your PL/SQL program violates an Oracle rule or exceeds a system-dependent limit. In other words, you cannot resume processing where you left off.
From there on, the exception propagates normally.
Scope Rules for PL/SQL Exceptions You cannot declare an exception twice in the same block. Though they share the same name, the two past_due exceptions are different, just as the two acct_num variables share the same name but are different variables. If, on the other hand, I use RAISE_APPLICATION_ERROR, I can specify the error number (of little interest to my users, but a good "identifier" for support) and, more importantly, the error Explain Different Looping Statement In Pl/sql SQL> insert into company values(2,1005,'E Inc.','Long Name E Inc.'); 1 row created.
Sometimes the error is not immediately obvious, and could not be detected until later when you perform calculations using bad data. IF trim(TO_CHAR(sysdate,'Day')) IN ('Saturday', 'Sunday') THEN 7. You can also set it for a single compilation by including it as part of the ALTER PROCEDURE ... my review here If the optional third parameter is TRUE, the error is placed on the stack of previous errors.
The message begins with the Oracle error code. SELF_IS_NULL Your program attempts to call a MEMBER method on a null instance. DECLARE 4. 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.
unless you used the pragma EXCEPTION_INIT to associate the exception name with an Oracle error number, in which case SQLCODE returns that error number and SQLERRM returns the corresponding error message. Just add an exception handler to your PL/SQL block. When you see an error stack, or sequence of error messages, the one on top is the one that you can trap and handle. The usual scoping rules for PL/SQL variables apply, so you can reference local and global variables in an exception handler.
Example 10-15 Controlling the Display of PL/SQL Warnings -- To focus on one aspect ALTER SESSION SET PLSQL_WARNINGS='ENABLE:PERFORMANCE'; -- Recompile with extra checking ALTER PROCEDURE loc_var COMPILE PLSQL_WARNINGS='ENABLE:PERFORMANCE' REUSE SETTINGS; -- RAISE_APPLICATION_ERROR The user defined exception can be combined with the RAISE_APPLICATION_ERROR procedure to result into an exception with a user defined name, user defined error code and a user defined message. These statements complete execution of the block or subprogram; control does not return to where the exception was raised. In such cases, you must use dot notation to specify the predefined exception, as follows: EXCEPTION WHEN invalid_number OR STANDARD.INVALID_NUMBER THEN -- handle the error END; How PL/SQL Exceptions Are Raised