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Database.EnumLocks Method ()

Enumerates a list of all current locks held on the database.

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

public DataTable EnumLocks ()
public DataTable EnumLocks ()
public function EnumLocks () : DataTable

Return Value

A DataTable object value that contains a list of locks held on the database and information about the type and location of the locks. The table describes the different columns of the returned DataTable.

Column

Data type

Description

RequestorSpid

Int32

The system process ID value of the process that is holding a lock on a database resource.

LockType

String

The description of the type of lock. See the syslockinfo table for a description of different lock types.

Database

String

The name of the database on which the lock is held.

Table

String

The name of the table on which the lock is held. This field contains a value only if the lock is held on a table.

Index

String

The name of the index on which the lock is held. This field contains a value only if the lock is held on an index.

Status

Int32

The status of the lock, which can be one of the following:

1 = Granted.

2 = Converting.

3 = Waiting.

Updated text: 17 July 2006

This namespace, class, or member is supported only in version 2.0 of the Microsoft .NET Framework.


The example runs a Server object enumeration method, but extracting the information from the DataTable object is the same for Database enumeration methods.

'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

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

Target Platforms

Release

History

17 July 2006

Changed content:
  • Added code to the Example section.

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