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  • sysprocesses

    Column name Data type Description

    spid

    smallint

    SQL Server session ID.

    kpid

    smallint

    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(256)

    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)

    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.

    ms179881.note(en-us,SQL.100).gifNote:
    This value is derived from the batch or memory address of the object. This value is not calculated by using the SQL Server 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.

     
     

    sp_who returns a result set with the following information.

    Column Data type Description

    spid

    smallint

    Session ID.

    ecid

    smallint

    Execution context ID of a given thread associated with a specific session ID.

    ECID = {0, 1, 2, 3, ...n}, where 0 always represents the main or parent thread, and {1, 2, 3, ...n} represent the subthreads.

    status

    nchar(30)

    Process 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 session's task is in the runnable queue of a scheduler while waiting to get a time quantum.

    spinloop. The session's task is waiting for a spinlock to become free.

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

    loginame

    nchar(128)

    Login name associated with the particular process.

    hostname

    nchar(128)

    Host or computer name for each process.

    blk

    char(5)

    Session ID for the blocking process, if one exists. Otherwise, this column is zero.

    When a transaction associated with a specified session ID is blocked by an orphaned distributed transaction, this column will return a '-2' for the blocking orphaned transaction.

    dbname

    nchar(128)

    Database used by the process.

    cmd

    nchar(16)

    Database Engine command (Transact-SQL statement, internal Database Engine process, and so on) executing for the process.

    request_id

    int

    ID for requests running in a specific session.

    In case of parallel processing, subthreads are created for the specific session ID. The main thread is indicated as spid = <xxx> and ecid =0. The other subthreads have the same spid = <xxx>, but with ecid > 0.

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  • 原文地址:https://www.cnblogs.com/buaaboyi/p/1705142.html
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