Oracle standard pre-defined exception

An exception is an exception that has been defined in pl/SQL and given the Exception name. They are all placed in the standard package that comes with pl/SQL, so that pl/SQL programmers do not need to define them again.

There are 21 predefined standard exceptions in Oracle:

OracleException name	Error Code	Description
DUP_VAL_ON_INDEX	ORA-00001	You tried to execute an INSERT or UPDATE statement that has created a duplicate value in a field restricted by a unique index.Trying to break a unique restriction
TIMEOUT_ON_RESOURCE	ORA-00051	You were waiting for a resource and you timed out.Timeout while waiting for resources
TRANSACTION_BACKED_OUT	ORA-00061	The remote portion of a transaction has rolled back.The deadlock transaction is canceled.
INVALID_CURSOR	ORA-01001	You tried to reference a cursor that does not yet exist. This may have happened because you 've executed a FETCH cursor or CLOSE cursor before OPENing the cursor.Try to use an unopened cursor
NOT_LOGGED_ON	ORA-01012	You tried to execute a call to Oracle before logging in.Not connectedORACLE
LOGIN_DENIED	ORA-01017	You tried to log into Oracle with an invalid username/password combination.Invalid user name/Password
NO_DATA_FOUND	ORA-01403	SELECTNo data foundYou tried one of the following: You executed a select into statement and no rows were returned.You referenced an uninitialized row in a table.You read past the end of file with the UTL_FILE package.
TOO_MANY_ROWS	ORA-01422	SELECTReturn multiple rowsYou tried to execute a select into statement and more than one row was returned.
ZERO_DIVIDE	ORA-01476	Try to be division by zeroYou tried to divide a number by zero.
INVALID_NUMBER	ORA-01722	An error occurred while converting a number.You tried to execute an SQL statement that tried to convert a string to a number, but it was unsuccessful.
STORAGE_ERROR	ORA-06500	Internal error caused by insufficient memory or Memory CorruptionYou ran out of memory or memory was too upted.
PROGRAM_ERROR	ORA-06501	Internal error,You need to reinstall the data dictionary view andPl/SQLPackageThis is a generic "Contact Oracle support" message because an internal problem was encountered.
VALUE_ERROR	ORA-06502	Assign value. If the variable length is insufficient, this exception is triggered.You tried to perform an operation and there was a error on a conversion, truncation, or invalid constraining of numeric or character data.
ROWTYPE_MISMATCH	ORA-6504	Host cursor variable andPL/SQLThe variable has incompatible row types.
CURSOR_ALREADY_OPEN	ORA-06511	Try to open an opened cursorYou tried to open a cursor that is already open.
Access_assist_null	ORA-6530	TryNullObject attribute assignment
COLLECTION_IS_NULL	ORA-6531	Try to give non-initialized nested table variables orVarryVariable assignment
SUBSCRIPT_OUTSIDE_LIMIT	ORA-6532	For nested orVarrayThe index uses a negative number.
SUBSCRIPT_BEYOND_COUNT	ORA-6533	For nested orVarrayThe index reference is greater than the number of elements in the set.