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dbcc-inputbuffer-transact-sql.md

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description DBCC INPUTBUFFER (Transact-SQL)
title DBCC INPUTBUFFER (Transact-SQL) | Microsoft Docs
ms.custom
ms.date 04/04/2018
ms.prod sql
ms.prod_service sql-database
ms.reviewer
ms.technology t-sql
ms.topic language-reference
f1_keywords
DBCC INPUTBUFFER
INPUTBUFFER
DBCC_INPUTBUFFER_TSQL
INPUTBUFFER_TSQL
dev_langs
TSQL
helpviewer_keywords
input buffers [SQL Server]
last statement from client
displaying last statement sent
statements [SQL Server], last statement
DBCC INPUTBUFFER statement
ms.assetid a44d702b-b3fb-4950-8c8f-1adcf3f514ba
author pmasl
ms.author umajay

DBCC INPUTBUFFER (Transact-SQL)

[!INCLUDE SQL Server SQL Database]

Displays the last statement sent from a client to an instance of [!INCLUDEmsCoName] [!INCLUDEssNoVersion].

Topic link icon Transact-SQL Syntax Conventions

Syntax

DBCC INPUTBUFFER ( session_id [ , request_id ])  
[WITH NO_INFOMSGS ]

[!INCLUDEsql-server-tsql-previous-offline-documentation]

Arguments

session_id
Is the session ID associated with each active primary connection.

request_id
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;

WITH
Enables options to be specified.

NO_INFOMSGS
Suppresses all informational messages that have severity levels from 0 through 10.

Result Sets

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.

Note

Starting with [!INCLUDEssSQL14] SP2, use sys.dm_exec_input_buffer to return information about statements submitted to an instance of [!INCLUDEssNoVersion].

Permissions

On [!INCLUDEssNoVersion] requires one of the following:

  • User must be a member of the sysadmin fixed server role.
  • User must have VIEW SERVER STATE permission.
  • 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:
SELECT @@spid;

On [!INCLUDEssSDS] Premium and Business Critical tiers requires the VIEW DATABASE STATE permission in the database. On [!INCLUDEssSDS] Standard, Basic, and General Purpose tiers requires the [!INCLUDEssSDS] admin account.

Examples

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);

See Also

DBCC (Transact-SQL)
sp_who (Transact-SQL)
sys.dm_exec_input_buffer (Transact-SQL)