JDBC Driver for SQL Server 7
Is there a free JDBC Driver for SQL Server 7 available? If so, where? I created a server program that listens to a port and inserts records based on information it receives. It uses sun's JDBC:ODBC Bridge but it crashes randomly (sometimes weeks, sometimes days, sometimes hours after starting program). Each time it crashes it generates a error log file like this:
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x77f821e1
Function name=RtlEnterCriticalSection
Library=C:\WINNT\System32\ntdll.dll
Current Java thread:
at sun.jdbc.odbc.JdbcOdbc.driverConnect(Native Method)
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(Unknown Source)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(Unknown Source)
at sun.jdbc.odbc.JdbcOdbcDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.xxxxx.data.DataAccess.connect(DataAccess.java:20)
at com.xxxxx.xxx.server.Broadcaster.insertOrder(POSServer.java:71)
at com.xxxxx.xxx.server.ClientListener.run(POSServer.java:298)
Dynamic libraries:
0x00400000 - 0x00405000 C:\WINNT\system32\java.exe
0x77F80000 - 0x77FFB000 C:\WINNT\System32\ntdll.dll
0x77DB0000 - 0x77E0C000 C:\WINNT\system32\ADVAPI32.dll
0x77E80000 - 0x77F35000 C:\WINNT\system32\KERNEL32.DLL
0x77D40000 - 0x77DB0000 C:\WINNT\system32\RPCRT4.DLL
0x78000000 - 0x78046000 C:\WINNT\system32\MSVCRT.dll
0x6D420000 - 0x6D4F0000 C:\Program Files\JavaSoft\JRE\1.3.1_02\bin\hotspot\jvm.dll
Local Time = Mon May 06 10:36:33 2002
Elapsed Time = 124
# The exception above was detected in native code outside the VM
# Java VM: Java HotSpot(TM) Client VM (1.3.1_02-b02 mixed mode)
Or this:
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x77f821e1
Function name=RtlEnterCriticalSection
Library=C:\WINNT\System32\ntdll.dll
Current Java thread:
at sun.jdbc.odbc.JdbcOdbc.freeConnect(Native Method)
at sun.jdbc.odbc.JdbcOdbc.SQLFreeConnect(Unknown Source)
at sun.jdbc.odbc.JdbcOdbcDriver.closeConnection(Unknown Source)
at sun.jdbc.odbc.JdbcOdbcConnection.close(Unknown Source)
at sun.jdbc.odbc.JdbcOdbcConnection.finalize(Unknown Source)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Unknown Source)
at java.lang.ref.Finalizer.access$100(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)
Dynamic libraries:
0x00400000 - 0x00405000 C:\Program Files\JavaSoft\JRE\1.3.1_02\bin\javaw.exe
0x77F80000 - 0x77FFB000 C:\WINNT\System32\ntdll.dll
0x77DB0000 - 0x77E0C000 C:\WINNT\system32\ADVAPI32.dll
0x77E80000 - 0x77F35000 C:\WINNT\system32\KERNEL32.DLL
0x77D40000 - 0x77DB0000 C:\WINNT\system32\RPCRT4.DLL
Local Time = Mon May 06 10:13:59 2002
Elapsed Time = 137
# The exception above was detected in native code outside the VM
# Java VM: Java HotSpot(TM) Client VM (1.3.1_02-b02 mixed mode)
I think this error occurs because I'm using sun's JDBC:ODBC Bridge. I'm hoping that using a different driver will solve the problem.
Thanks,
Dan
I used Sun's jdbc odbc driver for a while, with no problems, with Sql Server 7. But anyways, if you want a free type 4 driver, you can get the freetds driver at
https://sourceforge.net/projects/jtds/
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