Raise Application Error In Oracle With Example
The other is a a user-defined exception thrown when the foreign key between EMP(MGR) and EMP(EMPNO) is violated (because a manager must be an existing employee). DUP_VAL_ON_INDEX 00001 -1 A program attempts to store duplicate values in a column that is constrained by a unique index. Passing the value of 'True' adds the error to the current stack, while the default is 'False'. A pragma is a compiler directive that is processed at compile time, not at run time. useful reference
However, the same scope rules apply to variables and exceptions. For example, if you declare an exception named invalid_number and then PL/SQL raises the predefined exception INVALID_NUMBER internally, a handler written for INVALID_NUMBER will not catch the internal exception. You can write handlers for predefined exceptions using the names in the following list: Exception Oracle Error SQLCODE Value ACCESS_INTO_NULL ORA-06530 -6530 CASE_NOT_FOUND ORA-06592 -6592 COLLECTION_IS_NULL ORA-06531 -6531 CURSOR_ALREADY_OPEN ORA-06511 -6511 Note that user defined errors must be in the range between -20000 and -20999.
Difference Between Raise And Raise_application_error In Oracle
Suppose you used number constants instead of string constants to identify your exceptions and passed these to throw(). When called, raise_application_error ends the subprogram and returns a user-defined error number and message to the application. The optional OTHERS exception handler, which is always the last handler in a block or subprogram, acts as the handler for all exceptions not named specifically. Example 10-1 Runtime Error Handling DECLARE stock_price NUMBER := 9.73; net_earnings NUMBER := 0; pe_ratio NUMBER; BEGIN -- Calculation might cause division-by-zero error.
The primary algorithm is not obscured by error recovery algorithms. SQLERRM returns the corresponding error message. You cannot use SQLCODE or SQLERRM directly in a SQL statement. Raise Application Error In Oracle Triggers This parameter can be set at the system level or the session level.
One is DUP_VAL_ON_INDEX, which is thrown by a unique key on EMP(ENAME). An exception raised inside a handler propagates immediately to the enclosing block, which is searched to find a handler for this new exception. These statements complete execution of the block or subprogram; control does not return to where the exception was raised. If you recompile the subprogram with an ALTER ...
permission_denied EXCEPTION; 5. Raise_application_error Sqlerrm PROGRAM_ERROR 06501 -6501 PL/SQL has an internal problem. DECLARE name VARCHAR2(20); ans1 VARCHAR2(3); ans2 VARCHAR2(3); ans3 VARCHAR2(3); suffix NUMBER := 1; BEGIN ... When an exception occurs a messages which explains its cause is recieved.
The pragma must appear somewhere after the exception declaration in the same declarative section, as shown in Example 10-4. Example 10-4 Using PRAGMA EXCEPTION_INIT DECLARE deadlock_detected EXCEPTION; PRAGMA EXCEPTION_INIT(deadlock_detected, -60); BEGIN NULL; -- Some operation that causes an ORA-00060 error EXCEPTION WHEN deadlock_detected THEN NULL; -- handle the error END; Difference Between Raise And Raise_application_error In Oracle Alternatively, you can use the pragma EXCEPTION_INIT to associate exception names with Oracle error codes. Oracle Raise pragma exception_init(sal_high,-20001); 6.
So, you need not declare them yourself. http://vealcine.com/error-in/raise-application-error-in-oracle-pl-sql.php oracle share|improve this question asked Nov 19 '09 at 2:56 Ricky 8,4032762100 I found a useful link for similar question. Therefore, the RAISE statement and the WHEN clause refer to different exceptions. Thus, a block or subprogram can have only one OTHERS handler. Raise_application_error Parameters
WHEN ZERO_DIVIDE THEN -- handles 'division by zero' error DBMS_OUTPUT.PUT_LINE('Company must have had zero earnings.'); pe_ratio := NULL; WHEN OTHERS THEN -- handles all other errors DBMS_OUTPUT.PUT_LINE('Some other kind of error Also, a GOTO statement cannot branch from an exception handler into the current block. Consider the example below. this page Again, a single exception handler can trap all division-by-zero errors, bad array subscripts, and so on.
LOGIN_DENIED 01017 -1017 A program attempts to log on to Oracle with an invalid username or password. Raise_application_error In Oracle 11g Because a block can reference only local or global exceptions, enclosing blocks cannot reference exceptions declared in a sub-block. Catching Unhandled Exceptions Remember, if it cannot find a handler for a raised exception, PL/SQL returns an unhandled exception error to the host environment, which determines the outcome.
In the following example, you pass positive numbers and so get unwanted results: DECLARE err_msg VARCHAR2(100); BEGIN /* Get all Oracle error messages. */ FOR err_num IN 1..9999 LOOP err_msg :=
DECLARE huge_quantity EXCEPTION; CURSOR product_quantity is SELECT p.product_name as name, sum(o.total_units) as units FROM order_tems o, product p WHERE o.product_id = p.product_id; quantity order_tems.total_units%type; up_limit CONSTANT order_tems.total_units%type := 20; message VARCHAR2(50); COLLECTION_IS_NULL Your program attempts to apply collection methods other than EXISTS to an uninitialized (atomically null) nested table or varray, or the program attempts to assign values to the elements of change due to INSERT, UPDATE, or DELETE statements). Explain Different Looping Statement In Pl/sql Databases SQL Oracle / PLSQL SQL Server MySQL MariaDB PostgreSQL SQLite MS Office Excel Access Word Web Development HTML CSS Color Picker Languages C Language More ASCII Table Linux UNIX Java
For example: NO_DATA_FOUND and ZERO_DIVIDE are called Named System exceptions. However, other user-defined exceptions must be raised explicitly by RAISE statements. pe_ratio := stock_price / net_earnings; DBMS_OUTPUT.PUT_LINE('Price/earnings ratio = ' || pe_ratio); EXCEPTION -- exception handlers begin -- Only one of the WHEN blocks is executed. Get More Info If the exception is ever raised in that block (or any sub-block), you can be sure it will be handled.
If an error occurs in the sub-block, a local handler can catch the exception. TIMEOUT_ON_RESOURCE 00051 -51 A time out occurs while Oracle is waiting for a resource. Hi Michael,I read your article and would like to see the full code, could send me email [email protected]?MyTracelog - Registro de um DBAhttp://mytracelog.blogspot.com February 14, 2014 at 5:36 AM chet justice If you let the e_bad_value exception propagate out to your users, all they will know about the error is that the error code is 1 and the error message is "User-defined
That way, you can report errors to your application and avoid returning unhandled exceptions. END; Handlers in the current block cannot catch the raised exception because an exception raised in a declaration propagates immediately to the enclosing block. Instead, you must assign their values to local variables, then use the variables in the SQL statement, as shown in the following example: DECLARE err_num NUMBER; err_msg VARCHAR2(100); BEGIN ... However, other user-defined exceptions must be raised explicitly by RAISE statements.
The exception raised by this procedure cannot be handled explicitly with a name as it does not have one and must be handled only through the OTHERS handler. A long overdue riddle Code Golf Golf Golf Unix Exit Command Does store bought barbecue sauce need to be heated/cooked before consumption? PL/SQL Exception message consists of three parts. 1) Type of Exception 2) An Error Code 3) A message By Handling the exceptions we can ensure a PL/SQL block does not exit For example, in the Oracle Precompilers environment, any database changes made by a failed SQL statement or PL/SQL block are rolled back.
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 Special discounts should be provided.