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SET CURSOR_CLOSE_ON_COMMIT (Transact-SQL)

Controls the behavior of the Transact-SQL COMMIT TRANSACTION statement. The default value for this setting is OFF. This means that the server will not close cursors when you commit a transaction.

Topic link iconTransact-SQL Syntax Conventions

Syntax

SET CURSOR_CLOSE_ON_COMMIT { ON | OFF }

Remarks

When SET CURSOR_CLOSE_ON_COMMIT is ON, this setting closes any open cursors on commit or rollback in compliance with ISO. When SET CURSOR_CLOSE_ON_COMMIT is OFF, the cursor is not closed when a transaction is committed.

Note

SET CURSOR_CLOSE_ON_COMMIT to ON will not close open cursors on rollback when the rollback is applied to a savepoint_name from a SAVE TRANSACTION statement.

When SET CURSOR_CLOSE_ON_COMMIT is OFF, a ROLLBACK statement closes only open asynchronous cursors that are not fully populated. STATIC or INSENSITIVE cursors that were opened after modifications were made will no longer reflect the state of the data if the modifications are rolled back.

SET CURSOR_CLOSE_ON_COMMIT controls the same behavior as the CURSOR_CLOSE_ON_COMMIT database option. If CURSOR_CLOSE_ON_COMMIT is set to ON or OFF, that setting is used on the connection. If SET CURSOR_CLOSE_ON_COMMIT has not been specified, the value in the is_cursor_close_on_commit_on column in the sys.databases catalog view applies.

The SQL Server Native Client OLE DB Provider for SQL Server and the SQL Server Native Client ODBC driver both set CURSOR_CLOSE_ON_COMMIT to OFF when they connect. DB-Library does not automatically set the CURSOR_CLOSE_ON_COMMIT value.

When SET ANSI_DEFAULTS is ON, SET CURSOR_CLOSE_ON_COMMIT is enabled.

The setting of SET CURSOR_CLOSE_ON_COMMIT is set at execute or run time and not at parse time.

Permissions

Requires membership in the public role.

Examples

The following example defines a cursor in a transaction and attempts to use it after the transaction is committed.

-- SET CURSOR_CLOSE_ON_COMMIT
-------------------------------------------------------------------------------
SET NOCOUNT ON

CREATE TABLE t1 (
   a INT
)
GO 

INSERT INTO t1 
VALUES (1)
INSERT INTO t1 
VALUES (2)
GO

PRINT '-- SET CURSOR_CLOSE_ON_COMMIT ON'
GO
SET CURSOR_CLOSE_ON_COMMIT ON
GO
PRINT '-- BEGIN TRAN'
BEGIN TRAN
PRINT '-- Declare and open cursor'
DECLARE testcursor CURSOR FOR
SELECT a 
FROM t1
OPEN testcursor
PRINT '-- Commit tran'
COMMIT TRAN
PRINT '-- Try to use cursor'
FETCH NEXT FROM testcursor
CLOSE testcursor
DEALLOCATE testcursor
GO
PRINT '-- SET CURSOR_CLOSE_ON_COMMIT OFF'
GO
SET CURSOR_CLOSE_ON_COMMIT OFF
GO
PRINT '-- BEGIN TRAN'
BEGIN TRAN
PRINT '-- Declare and open cursor'
DECLARE testcursor CURSOR FOR
SELECT a 
FROM t1
OPEN testcursor
PRINT '-- Commit tran'
COMMIT TRAN
PRINT '-- Try to use cursor'
FETCH NEXT FROM testcursor
CLOSE testcursor
DEALLOCATE testcursor
GO
DROP TABLE t1;
GO