Pl Sql Exception When Error Code
Associating a PL/SQL Exception with a Number: Pragma EXCEPTION_INIT To handle error conditions (typically ORA- messages) that have no predefined name, you must use the OTHERS handler or the pragma EXCEPTION_INIT. SYS_INVALID_ROWID 01410 -1410 The conversion of a character string into a universal rowid fails because the character string does not represent a valid rowid. Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. For general information about PL/SQL compilation parameters, see PL/SQL Units and Compilation Parameters. this content
Table 11-3 lists the internally defined exceptions that have predefined names. "Internally Defined Exceptions" explains how to give user-declared names to internally defined exceptions. If the transaction succeeds, commit, then exit from the loop. So, your program cannot open that cursor inside the loop. If a subprogram exits with an unhandled exception, then actual parameters for OUT and IN OUT formal parameters passed by value (the default) retain the values that they had before the
Pl Sql Exception Handling Examples
The exception handler cannot transfer control back to its own block. 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. Everything got rolled back.
You cannot use SQLCODE or SQLERRM directly in a SQL statement. Why? Topics Exception Categories Advantages of Exception Handlers Guidelines for Avoiding and Handling Exceptions Exception Categories The exception categories are: Internally defined The runtime system raises internally defined exceptions implicitly (automatically). Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block When the i_is_one exception handler raises ZERO_DIVIDE, the exception propagates immediately to the invoker (therefore, the ZERO_DIVIDE exception handler does not handle it).
For the syntax of value_clause, see Oracle Database Reference. Oracle Raise Exception With Message stmt := 2; -- designates 2nd SELECT statement SELECT ... Using the above example we can display a error message using RAISE_APPLICATION_ERROR. To refer to all warning messages, use the keyword All.
Here you can list down as many as exceptions you want to handle. Pl/sql Raises An Exception In Which Two Of The Following Cases Example 11-14 Using a Locator Variable to Identify the Location of an Exception CREATE OR REPLACE PROCEDURE loc_var AS stmt_no NUMBER; name VARCHAR2(100); BEGIN stmt_no := 1; -- designates 1st SELECT COLLECTION_IS_NULL 06531 -6531 It is raised when a program attempts to apply collection methods other than EXISTS to an uninitialized nested table or varray, or the program attempts to assign values The facility is the first 3 characters of the error. */ v_Facility := SUBSTR(v_Error, 1, 3); -- Remove the facility and the dash (always 4 characters)
Oracle Raise Exception With Message
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. So, PL/SQL predefines some common Oracle errors as exceptions. Pl Sql Exception Handling Examples Thus, a block or subprogram can have only one OTHERS handler. Pl Sql Exception Handling Best Practices select * from mytable; < 1 > < 2 > 2 rows found.
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. news 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 Each handler consists of a WHEN clause, which specifies an exception, followed by a sequence of statements to be executed when that exception is raised. What does the SQLERRM Function do? Pl Sql Continue After Exception
BEGIN ---------- sub-block begins ... a) Named System Exceptions b) Unnamed System Exceptions c) User-defined Exceptions a) Named System Exceptions System exceptions are automatically raised by Oracle, when a program violates a RDBMS rule. If there is no handler for the exception, then PL/SQL returns an unhandled exception error to the invoker or host environment, which determines the outcome (for more information, see "Unhandled Exceptions"). http://iipseconline.com/pl-sql/pl-sql-error-exception-handling.html Example Since EXCEPTION HANDLING is usually written with the following syntax: EXCEPTION WHEN exception_name1 THEN [statements] WHEN exception_name2 THEN [statements] WHEN exception_name_n THEN [statements] WHEN OTHERS THEN [statements] END [procedure_name]; You
Write out debugging information in your exception handlers. Exception Part Can Be Defined Twice In Same Block TOO_MANY_ROWS ORA-01422 -1422 Single row SELECT returned multiple rows. In the following example, you alert your PL/SQL block to a user-defined exception named out_of_stock: DECLARE out_of_stock EXCEPTION; number_on_hand NUMBER := 0; BEGIN IF number_on_hand < 1 THEN RAISE out_of_stock; --
This parameter can be set at the system level or the session level.
Because the exception propagates immediately to the host environment, the exception handler does not handle it. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. The built-in parameter SELF points to the object, and is always the first parameter passed to a MEMBER method. Exception No Data Found Oracle In Example 11-3, a procedure uses a single exception handler to handle the predefined exception NO_DATA_FOUND, which can occur in either of two SELECT INTO statements.
Remember, no matter how severe the error is, you want to leave the database in a consistent state and avoid storing any bad data. 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. A cursor must be closed before it can be reopened. http://iipseconline.com/pl-sql/pl-sql-error-handling-exception.html Example 11-12 Raising User-Defined Exception with RAISE_APPLICATION_ERROR CREATE PROCEDURE account_status ( due_date DATE, today DATE ) AUTHID DEFINER IS BEGIN IF due_date < today THEN -- explicitly raise exception RAISE_APPLICATION_ERROR(-20000, 'Account
User-defined error Error defined and raised by the application These must be declared in the declarative section.