Pl Sql Exit With Error
Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. For example, if you know that the warning message PLW-05003 represents a serious problem in your code, including 'ERROR:05003' in the PLSQL_WARNINGS setting makes that condition trigger an error message (PLS_05003) The following example calculates a price-to-earnings ratio for a company. THEN -- handle the error WHEN OTHERS THEN -- handle all other errors END; If you want two or more exceptions to execute the same sequence of statements, list the exception http://iipseconline.com/pl-sql/pl-sql-exit-on-error.html
The value it yields can have any PL/SQL datatype other than BLOB, BFILE, an object type, a PL/SQL record, an index-by-table, a varray, or a nested table. Example 11-4 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; If no exception has been raised, SQLCODE returns zero and SQLERRM returns the message: ORA-0000: normal, successful completion. First anonymous PL/SQL block: set serveroutput on; BEGIN insert into test values(1); insert into test values(1); COMMIT; dbms_output.put_line('PRINT SOMETHING 1'); EXCEPTION WHEN OTHERS THEN if sqlcode <> 0 then dbms_output.put_line(SQLCODE || http://stackoverflow.com/questions/21786763/exit-execution-when-error-occurs-pl-sql
Pl Sql Exit Procedure
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. That way, you can report errors to your application and avoid returning unhandled exceptions. 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; Story about crystal flowers that stop time?
When you see an error stack, or sequence of error messages, the one on top is the one that you can trap and handle. In Example 11-6, you alert your PL/SQL block to a user-defined exception named out_of_stock. Add error-checking code whenever bad input data can cause an error. Exception Handling In Oracle Stored Procedure Example more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed
A cursor must be closed before it can be reopened. Pl Sql Developer Stop Execution 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 PL/SQL has exception handling, for example using RAISE, EXCEPTION and WHEN. https://docs.oracle.com/cd/A97630_01/appdev.920/a96624/07_errs.htm 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
You can explicitly raise a given exception anywhere within the scope of that exception. Oracle Exit Procedure Advantages of PL/SQL Exceptions Using exceptions for error handling has several advantages. Example 11-3 illustrates the scope rules. The NULL statement can improve readability by making the meaning and action of conditional statements clear.
Pl Sql Developer Stop Execution
You might store such information in a separate table. When possible, use the ELSIF clause instead of nested IF statements. Pl Sql Exit Procedure Example 11-11 Displaying SQLCODE and SQLERRM SQL> CREATE TABLE errors ( 2 code NUMBER, 3 message VARCHAR2(64), 4 happened TIMESTAMP); Table created. Pl Sql Stop Execution For example, you might want to roll back a transaction in the current block, then log the error in an enclosing block.
Topics: Exceptions Raised in Declarations Handling Exceptions Raised in Exception Handlers Branching To or from an Exception Handler Retrieving the Error Code and Error Message Catching Unhandled Exceptions Guidelines for Handling Consider the following example: BEGIN ... If an error occurs in the sub-block, a local handler can catch the exception. The other internal exceptions can be given names. Pl/sql Continue After Exception
That way, an exception handler written for the predefined exception can process other errors, as Example 11-7 shows. So, if a bound evaluates to a number outside that range, you get a numeric overflow error when PL/SQL attempts the assignment, as the following example shows: DECLARE hi NUMBER := All that I can tell is that I'm using Navicat, using the "query" pane and load my script file into it. have a peek at these guys It could represent a mistake, or it could be intentionally hidden by a debug flag, so you might or might not want a warning message for it.
RAISE_APPLICATION_ERROR is part of package DBMS_STANDARD, and as with package STANDARD, you need not qualify references to it. Whenever Sqlerror Exit Raising Exceptions with the RAISE Statement PL/SQL blocks and subprograms should raise an exception only when an error makes it undesirable or impossible to finish processing. The error number and message can be trapped like any Oracle error.
There are two forms of EXIT statements: EXIT and EXIT-WHEN.
In fact I'm not an "Oracle Expert", even if I have good knowledge of DBMS in general. The technique is: Encase the transaction in a sub-block. Table 11-2 PL/SQL Warning Categories Category Description Example SEVERE Condition might cause unexpected action or wrong results. Pl/sql Break Loop The keyword OTHERS cannot appear in the list of exception names; it must appear by itself.
Examples of internally defined exceptions include division by zero and out of memory. If the exception is ever raised in that block (including inside a sub-block), it will be handled. Figure 10-1 Propagation Rules: Example 1 Description of the illustration lnpls009.gif Figure 10-2 Propagation Rules: Example 2 Description of the illustration lnpls010.gif Figure 10-3 Propagation Rules: Example 3 Description of the For example, PL/SQL raises the predefined exception NO_DATA_FOUND if a SELECT INTO statement returns no rows.
END LOOP; | END LOOP; FOR-LOOP Whereas the number of iterations through a WHILE loop is unknown until the loop completes, the number of iterations through a FOR loop is known Therefore, the sequence of statements is executed at least once. Controlling PL/SQL Warning Messages To let the database issue warning messages during PL/SQL compilation, you set the compilation parameter PLSQL_WARNINGS. RAISE_APPLICATION_ERROR is part of package DBMS_STANDARD, and as with package STANDARD, you do not need to qualify references to it.
END IF; The THEN and ELSE clauses can include IF statements. Thus, the RAISE statement and the WHEN clause refer to different exceptions. STORAGE_ERROR 06500 -6500 PL/SQL ran out of memory or memory was corrupted. When the exception handler completes, the sub-block terminates, control transfers to the LOOP statement in the enclosing block, the sub-block starts executing again, and the transaction is retried.
END; Dynamic Ranges PL/SQL lets you determine the loop range dynamically at run time, as the following example shows: SELECT COUNT(empno) INTO emp_count FROM emp; FOR i IN 1..emp_count LOOP ... Syntax: The syntax for an EXIT statement in PL/SQL is as follows: EXIT; Flow Diagram: Example: DECLARE a number(2) := 10; BEGIN -- while loop execution WHILE a < 20 LOOP That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. In the latter case, PL/SQL returns an unhandled exception error to the host environment.
If so, do it by invoking a subprogram declared with the PRAGMA AUTONOMOUS_TRANSACTION, so that you can commit your debugging information, even if you roll back the work that the main With either form of EXIT statement, you can complete not only the current loop, but any enclosing loop. If you need to know which statement failed, you can use a locator variable: DECLARE stmt INTEGER; name VARCHAR2(100); BEGIN stmt := 1; -- designates 1st SELECT statement SELECT table_name INTO COLLECTION_IS_NULL 06531 -6531 A program attempts to apply collection methods other than EXISTS to an uninitialized nested table or varray, or the program attempts to assign values to the elements of
For example: EXCEPTION WHEN INVALID_NUMBER THEN INSERT INTO ... -- might raise DUP_VAL_ON_INDEX WHEN DUP_VAL_ON_INDEX THEN ... -- cannot catch the exception END; Branching to or from an Exception Handler A Unlike variables, exceptions cannot appear in assignment statements or SQL statements. Consider the example below. This chapter discusses the following topics: Overview of PL/SQL Control Structures Conditional Control: IF and CASE Statements Iterative Control: LOOP and EXIT Statements Sequential Control: GOTO and NULL Statements Overview of
To handle raised exceptions, you write separate routines called exception handlers. A cursor must be closed before it can be reopened.