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Predefined PL/SQL Exceptions

An internal exception is raised automatically if your PL/SQL program violates a database rule or exceeds a system-dependent limit. PL/SQL predefines some common ORA-n errors as exceptions. For example, PL/SQL raises the predefined exception NO_DATA_FOUND if a SELECT INTO statement returns no rows.

You can use the pragma EXCEPTION_INIT to associate exception names with other Oracle Database error codes that you can anticipate. To handle unexpected Oracle Database errors, you can use the OTHERS handler. Within this handler, you can invoke the functions SQLCODE and SQLERRM to return the Oracle Database error code and message text. Once you know the error code, you can use it with pragma EXCEPTION_INIT and write a handler specifically for that error.

PL/SQL declares predefined exceptions globally in package STANDARD. You need not declare them yourself. You can write handlers for predefined exceptions using the names in Table 11-1.



Table 11-1 Predefined PL/SQL Exceptions

Exception Name

ORA Error

SQLCODE

Raised When ...

ACCESS_INTO_NULL

06530

-6530

A program attempts to assign values to the attributes of an uninitialized object

CASE_NOT_FOUND

06592

-6592

None of the choices in the WHEN clauses of a CASE statement is selected, and there is no ELSE clause.

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 an uninitialized nested table or varray.

CURSOR_ALREADY_OPEN

06511

-6511

A program attempts to open an already open cursor. A cursor must be closed before it can be reopened. A cursor FOR loop automatically opens the cursor to which it refers, so your program cannot open that cursor inside the loop.

DUP_VAL_ON_INDEX

00001

-1

A program attempts to store duplicate values in a column that is constrained by a unique index.

INVALID_CURSOR

01001

-1001

A program attempts a cursor operation that is not allowed, such as closing an unopened cursor.

INVALID_NUMBER

01722

-1722

n a SQL statement, the conversion of a character string into a number fails because the string does not represent a valid number. (In procedural statements, VALUE_ERROR is raised.) This exception is also raised when the LIMIT-clause expression in a bulk FETCH statement does not evaluate to a positive number.

LOGIN_DENIED

01017

-1017

A program attempts to log on to the database with an invalid username or password.

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.

Because this exception is used internally by some SQL functions to signal completion, you must not rely on this exception being propagated if you raise it within a function that is invoked as part of a query.

NOT_LOGGED_ON

01012

-1012

A program issues a database call without being connected to the database.

PROGRAM_ERROR

06501

-6501

PL/SQL has an internal problem.

ROWTYPE_MISMATCH

06504

-6504

The host cursor variable and PL/SQL cursor variable involved in an assignment have incompatible return types. When an open host cursor variable is passed to a stored subprogram, the return types of the actual and formal parameters must be compatible.

SELF_IS_NULL

30625

-30625

A program attempts to invoke a MEMBER method, but the instance of the object type was not initialized. The built-in parameter SELF points to the object, and is always the first parameter passed to a MEMBER method.

STORAGE_ERROR

06500

-6500

PL/SQL ran out of memory or memory was corrupted.

SUBSCRIPT_BEYOND_COUNT

06533

-6533

A program references a nested table or varray element using an index number larger than the number of elements in the collection.

SUBSCRIPT_OUTSIDE_LIMIT

06532

-6532

A program references a nested table or varray element using an index number (-1 for example) that is outside the legal range.

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.

TIMEOUT_ON_RESOURCE

00051

-51

A time out occurs while the database is waiting for a resource.

TOO_MANY_ROWS

01422

-1422

A SELECT INTO statement returns more than one row.

VALUE_ERROR

06502

-6502

An arithmetic, conversion, truncation, or size-constraint error occurs. For example, when your program selects a column value into a character variable, if the value is longer than the declared length of the variable, PL/SQL stops the assignment and raises VALUE_ERROR. In procedural statements, VALUE_ERROR is raised if the conversion of a character string into a number fails. (In SQL statements, INVALID_NUMBER is raised.)

ZERO_DIVIDE

01476

-1476

A program attempts to divide a number by zero.





출처 : http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/errors.htm#LNPLS00703

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