SYMPTOMS
The Microsoft SQL Server 2000 Driver for JDBC may cause an
application to stop responding, or "hang," while working with concurrent
transactions in a multi-threaded environment. A thread dump file that is
generated during the hang (with the 'kill -quit <pid>' command in a Unix
environment, or with the CTRL+SHIFT+BREAK key combination in the command
session where the application is launched in a Windows environment) shows the
following call stack:
java.net.SocketInputStream.socketRead
java.net.SocketInputStream.read com.microsoft.util.UtilSocketDataProvider.getArrayOfBytes
com.microsoft.util.UtilBufferedDataProvider.cacheNextBlock
com.microsoft.util.UtilBufferedDataProvider.getArrayOfBytes
com.microsoft.jdbc.sqlserver.SQLServerDepacketizingDataProvider.signalStartOfPacket
com.microsoft.util.UtilDepacketizingDataProvider.getArrayOfBytes
com.microsoft.util.UtilPagedTempBuffer.write com.microsoft.util.UtilPagedTempBuffer.write
com.microsoft.util.UtilByteArrayDataProvider.receive
com.microsoft.util.UtilByteOrderedDataReader.receive
com.microsoft.jdbc.sqlserver.tds.TDSRPCRequest.submitRequest
com.microsoft.jdbc.sqlserver.tds.TDSCursorRequest.sendCursorFetch
com.microsoft.jdbc.sqlserver.tds.TDSCursorRequest.openCursor
com.microsoft.jdbc.sqlserver.SQLServerImplStatement.execute
com.microsoft.jdbc.base.BaseStatement.commonExecute
com.microsoft.jdbc.base.BaseStatement.executeQueryInternal
com.microsoft.jdbc.base.BasePreparedStatement.executeQuery
RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product
Support Services to obtain the fix. For a complete list of Microsoft Product
Support Services phone numbers and information about support costs, visit the
following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for
support calls may be canceled if a Microsoft Support Professional determines
that a specific update will resolve your problem. The usual support costs will
apply to additional support questions and issues that do not qualify for the
specific update in question.
The English version of this
fix has the file attributes (or later) that are listed in the following table.
The dates and times for these files are listed in coordinated universal time
(UTC). When you view the file information, it is converted to local time. To
find the difference between UTC and local time, use the
Time
Zone tab in the Date and Time tool in Control Panel.
The Windows version of this fix has the following properties:
Date Time Version Size File name
-------------------------------------------------------------
30-Dec-2002 16:39 2.2.0030 286,707 Msbase.jar
30-Dec-2002 16:40 2.2.0030 67,053 Mssqlserver.jar
30-Dec-2002 16:40 2.2.0030 58,903 Msutil.jar
The Unix-based version of this fix has the following properties:
Date Time Version Size File name
-------------------------------------------------------------
31-Mar-2003 18:36 2.2.0030 286,707 Msbase.jar
31-Mar-2003 18:36 2.2.0030 67,053 Mssqlserver.jar
31-Mar-2003 18:36 2.2.0030 58,903 Msutil.jar
Note Although the file dates are different for each operating system
that is listed, internally the files are exactly the same. The best way to
determine the version of the driver that you are using is to use the
getDriverVersion method of the
DatabaseMetaData interface.