Sdílet prostřednictvím

  • Článek

Server.EnumLocks Method (Int32)

Enumerates a list of current locks held by the specified process on the instance of SQL Server.

Namespace:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)

Syntax

'Declaration
Public Function EnumLocks ( _
    processId As Integer _
) As DataTable
'Usage
Dim instance As Server
Dim processId As Integer
Dim returnValue As DataTable

returnValue = instance.EnumLocks(processId)

public DataTable EnumLocks(
    int processId
)

public:
DataTable^ EnumLocks(
    int processId
)

member EnumLocks : 
        processId:int -> DataTable 

public function EnumLocks(
    processId : int
) : DataTable

Parameters

  • processId
    Type: System.Int32
    An Int32 value that specifies the system ID value that uniquely identifies the process.

Return Value

Type: System.Data.DataTable

A DataTable system object value that contains a list of current locks held by the specified process on the instance of SQL Server. The table describes the different columns of the returned DataTable.

Column

Data type

Description

RequestorSpid

Int32

The SQL Server process ID that uniquely identifies the process requesting the lock.

LockType

String

The type of lock. See req_mode in sys.syslockinfo (Transact-SQL).

Database

String

The name of the database that contains the lock.

Schema

String

The schema of the locked resource.

Table

String

The table that contains the lock.

Index

String

The index that contains the lock.

Status

Int32

The status of the lock. 1 for Grant, 2 for Convert, and 3 for Wait.

Remarks

Use this method to determine the locks that are currently held on the instance of SQL Server. The information that is returned can help you identify locking problems that might affect performance.

Examples

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Call the EnumCollations method and return collation information to DataTable variable.
Dim d As DataTable
'Select the returned data into an array of DataRow.
d = srv.EnumCollations
'Iterate through the rows and display collation details for the instance of SQL Server.
Dim r As DataRow
Dim c As DataColumn
For Each r In d.Rows
    Console.WriteLine("============================================")
    For Each c In r.Table.Columns
        Console.WriteLine(c.ColumnName + " = " + r(c).ToString)
    Next
Next