Server.EnumLocks Method ()
Enumerates a list of current locks held on the instance of Microsoft SQL Server.
Namespace: Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)
Syntax
'Declaration
Public Function EnumLocks As DataTable
public DataTable EnumLocks ()
public:
DataTable^ EnumLocks ()
public DataTable EnumLocks ()
public function EnumLocks () : DataTable
Return Value
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 |
The SQL Server process ID that uniquely identifies the process requesting the lock. |
|
LockType |
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
Updated text:
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.
This namespace, class, or member is supported only in version 2.0 of the Microsoft .NET Framework.
Example
'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
Thread Safety
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.
Platforms
Development Platforms
For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.
Target Platforms
For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.
See Also
Reference
Server Class
Server Members
Microsoft.SqlServer.Management.Smo Namespace
Other Resources
How to: Use an Enumeration Method that Returns a DataTable Object in Visual Basic .NET
Calling Methods
Managing Servers
sys.syslockinfo (Transact-SQL)
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