Without the native SSO library installed you still have to provide the username and password because otherwise jTDS cannot determine user credentials. In this case the driver will substitute the parameters locally and use a normal “execute procedure” SQL call; however, this mode of execution is less efficient than an RPC. The client may be suspended if the system log fills so check that the log space is sufficient for the batch you are trying to load. The “Connection refused” exception is thrown by jTDS when it is unable to connect to the server. What should I do? Driver class, which means that jtds.

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Unable to load database driver – help with datasource profile

There may be a number of reasons why this could happen:. Driver class, which means that jtds. However, you can run loax of the benchmarks yourself, the effort is minimal. Why do I get java. You will have to use the instance property either append it to the URL or place it into the Properties you supply to getConnection instead of doing it the Microsoft way.

This parameter is lastUpdateCount and you can find out more about it here. There is a good side to this: This gives jTDS a 2x performance increase over the next fastest driver in some not so uncommon cases. Batch processing using executeBatch hangs or is unreliable on Sybase. The exception is thrown because it’s better to warn the user that the output parameters are not yet set instead of leaving the impression that all is ok and cause other, harder to detect problems.


A common solution rather than the inelegant execute and then cycling through multiple result sets, is to supress the update counts for statements you are uninterested in. As a conclusion the only safe multithreading scenarios are these: Batch processing with executeBatch hangs or is unreliable on Sybase. CallableStatement output parameter getter throws java. In case you are wondering if this is right, this is a quote from the CallableStatement API documentation: This is caused by triggers; replication is also implemented through triggers, so you will encounter this issue on replicated databases too.

You are required to use TDS 5. So for procedures returning ResultSet s you will have to loop, consuming all results before reading the output parameters i. A common mistake is to append a semicolon “;” to the end of the URL e. When calling a stored procedure that has output parameters, the driver has to call the procedure using a remote procedure call RPC.

Where does one place an instance name in the connect string? This is what happens with SQL Server-returned errors and warnings and is consistent with how other drivers handle exceptions.

It is also recommended that you execute each batch in a transaction i. So, for maximum compatibility, it is recommended that you use execute anytime you run queries returning more than one result even if the particular driver you are using allows you to do otherwise. As the server itself does not return an SQL state code, the SQLMessage class associates native error numbers with SQL state codes actually there’s a very comprehensive map there ; SQL Server originated errors and warnings that are not found in this map are given a default code of ‘S’, respectively ”.


For queries that return multiple results the JDBC spec requires execute to be used. SQL is loar to the server each time without any preparation, literals are inserted in the SQL slower.

In our oppinion this is better than jdts a benchmark of our own, which could be designed in such a way as to give jTDS the edge. If that’s the case, replace jtds.

JDBC Drivers for Microsoft SQL Server – DbVisualizer

The solution is to set the “TDS” property to “4. The name of the jTDS jar file may be jtds Other I didn’t find the answer to my problem in this FAQ. What should I do? If you are getting this in an application, start your application with. But if the stored procedure returns at least one ResultSet jTDS will only cache the update counts up to the first ResultSet and jtdds will have to call getMoreResults to process all the results.

Web Design Anca Sinpalean. Temporary stored procedures are created for each unique SQL statement and parameter combination faster.