DBCC INPUTBUFFER (Transact-SQL)
Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance
Displays the last statement sent from a client to an instance of Microsoft SQL Server.
DBCC INPUTBUFFER ( session_id [ , request_id ]) [WITH NO_INFOMSGS ]
To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.
Is the session ID associated with each active primary connection.
Is the exact request (batch) to search for within the current session.
The following query returns request_id:
SELECT request_id FROM sys.dm_exec_requests WHERE session_id = @@spid;
Enables options to be specified.
Suppresses all informational messages that have severity levels from 0 through 10.
DBCC INPUTBUFFER returns a rowset with the following columns.
|Column name||Data type||Description|
|EventType||nvarchar(30)||Event type. This could be RPC Event or Language Event. The output will be No Event when no last event was detected.|
|Parameters||smallint||0 = Text
1- n = Parameters
|EventInfo||nvarchar(4000)||For an EventType of RPC, EventInfo contains only the procedure name. For an EventType of Language, only the first 4000 characters of the event are displayed.|
For example, DBCC INPUTBUFFER returns the following result set when the last event in the buffer is DBCC INPUTBUFFER(11).
EventType Parameters EventInfo -------------- ---------- --------------------- Language Event 0 DBCC INPUTBUFFER (11) (1 row(s) affected) DBCC execution completed. If DBCC printed error messages, contact your system administrator.
Starting with SQL Server 2014 (12.x) SP2, use sys.dm_exec_input_buffer to return information about statements submitted to an instance of SQL Server.
On SQL Server requires the VIEW SERVER STATE permission or membership in the sysadmin fixed server role.
Without any of these, users can only view the inputbuffer of their own session. That means the session_id must be the same as the session ID on which the command is being run. To determine the session ID execute the following query:
On SQL Database Premium and Business Critical tiers requires the VIEW DATABASE STATE permission in the database. On SQL Database Standard, Basic, and General Purpose tiers requires the SQL Database admin account.
The following example runs
DBCC INPUTBUFFER on a second connection while a long transaction is running on a previous connection.
CREATE TABLE dbo.T1 (Col1 INT, Col2 CHAR(3)); GO DECLARE @i INT = 0; BEGIN TRAN SET @i = 0; WHILE (@i < 100000) BEGIN INSERT INTO dbo.T1 VALUES (@i, CAST(@i AS CHAR(3))); SET @i += 1; END; COMMIT TRAN; --Start new connection #2. DBCC INPUTBUFFER (52);
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