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sys.sysprocesses (Transact-SQL)

Updated: 14 April 2006

Contains information about processes that are running on an instance of Microsoft SQL Server. These processes can be client processes or system processes. To access sysprocesses, you must be in the master database context, or you must use the master.dbo.sysprocesses three-part name.

ms179881.note(en-US,SQL.90).gifImportant:
This SQL Server 2000 system table is included as a view for backward compatibility. We recommend that you use the current SQL Server system views instead. To find the equivalent system view or views, see Mapping SQL Server 2000 System Tables to SQL Server 2005 System Views. This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.

Column name Data type Description

spid

smallint

SQL Server session ID.

kpid

smallint

Microsoft Windows thread ID.

blocked

smallint

ID of the session that is blocking the request. If this column is NULL, the request is not blocked, or the session information of the blocking session is not available (or cannot be identified).

-2 = The blocking resource is owned by an orphaned distributed transaction.

-3 = The blocking resource is owned by a deferred recovery transaction.

-4 = Session ID of the blocking latch owner could not be determined due to internal latch state transitions.

waittype

binary(2)

Reserved.

waittime

bigint

Current wait time in milliseconds.

0 = Process is not waiting.

lastwaittype

nchar(32)

A string indicating the name of the last or current wait type.

waitresource

nchar(32)

Textual representation of a lock resource.

dbid

smallint

ID of the database currently being used by the process.

uid

smallint

ID of the user that executed the command. Overflows or returns NULL if the number of users and roles exceeds 32,767. For more information, see Querying the SQL Server System Catalog.

cpu

int

Cumulative CPU time for the process. The entry is updated for all processes, regardless of whether the SET STATISTICS TIME option is ON or OFF.

physical_io

int

Cumulative disk reads and writes for the process.

memusage

int

Number of pages in the procedure cache that are currently allocated to this process. A negative number indicates that the process is freeing memory allocated by another process.

login_time

datetime

Time at which a client process logged into the server. For system processes, the time at which the SQL Server startup occurred is stored.

last_batch

datetime

Last time a client process executed a remote stored procedure call or an EXECUTE statement. For system processes, the time at which the SQL Server startup occurred is stored.

ecid

smallint

Execution context ID used to uniquely identify the subthreads operating on behalf of a single process.

open_tran

smallint

Number of open transactions for the process.

status

nchar(30)

Process ID status. The possible values are:

dormant = SQL Server is resetting the session.

running = The session is running one or more batches. When Multiple Active Result Sets (MARS) is enabled, a session can run multiple batches. For more information, see Using Multiple Active Result Sets (MARS).

background = The session is running a background task, such as deadlock detection.

rollback = The session has a transaction rollback in process.

pending = The session is waiting for a worker thread to become available.

runnable = The task in the session is in the runnable queue of a scheduler while waiting to get a time quantum.

spinloop = The task in the session is waiting for a spinlock to become free.

suspended = The session is waiting for an event, such as I/O, to complete.

sid

binary(86)

Globally unique identifier (GUID) for the user.

hostname

nchar(128)

Name of the workstation.

program_name

nchar(128)

Name of the application program.

hostprocess

nchar(10)

Workstation process ID number.

cmd

nchar(16)

Command currently being executed.

nt_domain

nchar(128)

Microsoft Windows domain for the client, if using Windows Authentication, or a trusted connection.

nt_username

nchar(128)

Windows user name for the process, if using Windows Authentication, or a trusted connection.

net_address

nchar(12)

Assigned unique identifier for the network adapter on the workstation of each user. When a user logs in, this identifier is inserted in the net_address column.

net_library

nchar(12)

Column in which the client's network library is stored. Every client process comes in on a network connection. Network connections have a network library associated with them that enables them to make the connection. For more information, see Network Protocols, and TDS Endpoints.

loginame

nchar(128)

Login name.

context_info

binary(128)

Data stored in a batch by using the SET CONTEXT_INFO statement.

sql_handle

binary(20)

Represents the currently executing batch or object.

Note   This value is derived from the batch or memory address of the object. This value is not calculated by using the SQL Server 2005 hash-based algorithm.

stmt_start

int

Starting offset of the current SQL statement for the specified sql_handle.

stmt_end

int

Ending offset of the current SQL statement for the specified sql_handle.

-1 = Current statement runs to the end of the results returned by the fn_get_sql function for the specified sql_handle.

request_id

int

ID of request. Used to identify requests running in a specific session.

If a user has VIEW SERVER STATE permission on the server, the user will see all executing sessions in the instance of SQL Server; otherwise, the user will see only the current session.

Release History

14 April 2006

New content:
  • Added information to sql_handle about how this value is calculated.
Term Definition

5 December 2005

Changed content:
  • Expanded definitions for the blocked column.
  • Expanded definitions for the status column.
Term Definition

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