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Pl Sql Exception Error Code
The error number and message can be trapped like any Oracle error. RAISE_APPLICATION_ERROR is used for the following reasons, a) to create a unique id for an user-defined exception. Therefore, beyond its scope, a user-defined exception can be handled only with an OTHERS exception handler. In this link i found this list, are there anymore? click site
Exception Propagation If an exception is raised in a block that has no exception handler for it, then the exception propagates. When the sub-block ends, the enclosing block continues to execute at the point where the sub-block ends. DECLARE pe_ratio NUMBER(3,1); BEGIN SELECT price / earnings INTO pe_ratio FROM stocks WHERE symbol = 'XYZ'; -- might cause division-by-zero error INSERT INTO stats (symbol, ratio) VALUES ('XYZ', pe_ratio); COMMIT; EXCEPTION SYS_INVALID_ROWID The conversion of a character string into a universal rowid fails because the character string does not represent a valid rowid. TIMEOUT_ON_RESOURCE A time-out occurs while Oracle is https://docs.oracle.com/cd/A97630_01/appdev.920/a96624/07_errs.htm
Oracle Raise Exception With Message
These exception do not occur frequently. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. For example, PL/SQL raises the predefined exception NO_DATA_FOUND if a SELECT INTO statement returns no rows. Execution of the handler is complete, so the sub-block terminates, and execution continues with the INSERT statement.
Write out debugging information in your exception handlers. These statements complete execution of the block or subprogram; control does not return to where the exception was raised. Outside an exception handler, you must specify the exception name. Pl Sql Exception Handling Best Practices DUP_VAL_ON_INDEX Your program attempts to store duplicate values in a database column that is constrained by a unique index.
The primary algorithm is not obscured by error recovery algorithms. Pl Sql Exception Handling Examples 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. For more information about trace files, see Oracle Database Performance Tuning Guide. my response For user-defined exceptions, SQLCODE returns +1 and SQLERRM returns the message: User-Defined Exception.
Next section will give you an example on raising user-defined exception, similar way you can raise Oracle standard exceptions as well. Sqlerrm In Oracle 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. However, other user-defined exceptions must be raised explicitly by RAISE statements. ORA-01403 TOO_MANY_ROWS When you SELECT or fetch more than one row into a record or variable.
Pl Sql Exception Handling Examples
END IF; END; / The calling application gets a PL/SQL exception, which it can process using the error-reporting functions SQLCODE and SQLERRM in an OTHERS handler. 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 Oracle Raise Exception With Message STORAGE_ERROR ORA-06500 A hardware problem: Either RAM or disk drive. Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block Redeclaring Predefined Exceptions Remember, PL/SQL declares predefined exceptions globally in package STANDARD, so you need not declare them yourself.
Continuing after an Exception Is Raised An exception handler lets you recover from an otherwise fatal error before exiting a block. get redirected here You can have a single exception handler for all division-by-zero errors, bad array indexes, and so on. 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 Example 11-20 Exception Raised in Exception Handler is Not Handled CREATE PROCEDURE descending_reciprocals (n INTEGER) AUTHID DEFINER IS i INTEGER; i_is_one EXCEPTION; BEGIN i := n; LOOP IF i = 1 Pl Sql Continue After Exception
SELF is null SELF_IS_NULL exception; pragma EXCEPTION_INIT(SELF_IS_NULL, '-30625'); CASE_NOT_FOUND exception; pragma EXCEPTION_INIT(CASE_NOT_FOUND, '-6592'); -- Added for USERENV enhancement, bug 1622213. A cursor FOR loop automatically opens the cursor to which it refers. You can make the checking as general or as precise as you like. navigate to this website procedure_that_performs_select(); ...
DELCARE Declaration section BEGIN DECLARE Declaration section BEGIN Execution section EXCEPTION Exception section END; EXCEPTION Exception section END; In the above case, if the exception is raised in the Oracle Cursor Exception Handling Within A Loop General Syntax for coding the exception section DECLARE Declaration section BEGIN Exception section EXCEPTION WHEN ex_name1 THEN -Error handling statements WHEN ex_name2 THEN -Error handling statements WHEN Others THEN -Error handling In the following example, you call raise_application_error if an employee's salary is missing: CREATE PROCEDURE raise_salary (emp_id NUMBER, amount NUMBER) AS curr_sal NUMBER; BEGIN SELECT sal INTO curr_sal FROM emp WHERE
You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package.
If there is no enclosing block, control returns to the host environment. When the exception hander raises ZERO_DIVIDE, the exception propagates immediately to the invoker. 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 ... Exception No Data Found Oracle END; Omitting the exception name in a RAISE statement--allowed only in an exception handler--reraises the current exception.
If earnings are zero, the function DECODE returns a null. After the exception handler runs, control transfers to the next statement of the outer block. END; Normally, this is not a problem. my review here Why can't I set NODE_ENV to undefined?
User-defined You can declare your own exceptions in the declarative part of any PL/SQL anonymous block, subprogram, or package. Exceptions also improve reliability. Also, PL/SQL does not roll back database work done by the subprogram. Scope Rules for PL/SQL Exceptions You cannot declare an exception twice in the same block.
Unlike internal exceptions, user-defined exceptions must be given names. By using the WHEN OTHERS exception handler, or 2. 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. On my 18.104.22.168 I found one not in the list: USERENV_COMMITSCN_ERROR exception; pragma EXCEPTION_INIT(USERENV_COMMITSCN_ERROR, '-1725'); share|improve this answer edited Dec 29 '09 at 12:40 answered Dec 29 '09 at 12:29 Egor
Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. You can, however, declare the same exception in two different blocks. Browse other questions tagged oracle exception plsql custom-exceptions or ask your own question. Examples of bad input data are incorrect or null actual parameters and queries that return no rows or more rows than you expect.
Unlike variables, exceptions cannot appear in assignment statements or SQL statements. For example, a better way to do the insert follows: INSERT INTO stats (symbol, ratio) SELECT symbol, DECODE(earnings, 0, NULL, price / earnings) FROM stocks WHERE symbol = 'XYZ'; In this BEGIN ---------- sub-block begins ... nvl(l_text.count,0) LOOP dbms_output.put_line(l_text(i) ); END LOOP; dbms_output.put_line( 'error text: ' ); FOR i IN 1 ..
An exception name declaration has this syntax: exception_name EXCEPTION; For semantic information, see "Exception Declaration". Tips for Handling PL/SQL Errors In this section, you learn three techniques that increase flexibility. You declare an exception by introducing its name, followed by the keyword EXCEPTION. Raising Exceptions Exceptions are raised by the database server automatically whenever there is any internal database error, but exceptions can be raised explicitly by the programmer by using the command RAISE.
This stops normal execution of the block and transfers control to the exception handlers. DECLARE ---------- sub-block begins past_due EXCEPTION; BEGIN ... The solution is to define a new exception and associate it with an error code: exception connection_error; pragma exception_init(connection_error, -3135); ...