In our oppinion this is better than having a benchmark of our own, which could be designed in such a way as to give jTDS the edge. Have something to contribute to this discussion? Scenario i , while it does work, is not necessarily a good solution because it requires a lot of locking and waiting on the same network connection plus last but not least a lot of caching. This gives jTDS a 2x performance increase over the next fastest driver in some not so uncommon cases. Please note that this flag only alters the behavior of executeUpdate ; execute will still return all update counts. Actually we do have benchmark results from two different benchmarks, both developed by large commercial SQL Server JDBC driver vendors to demonstrate the performance of their own drivers. If you’ll look at the query you are trying to execute, you’ll see that it probably returns an update count first, followed by a ResultSet.
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This parameter is lastUpdateCount and you can find out more about it here. As a general principle we try and keep synchronization to a minimum both for performance and deadlock reasons.
If jvbc can’t figure out why, ask your network administrator for help. If you are onternetcds this in an application, start your application with. Normally, with a JDBC driver, PreparedStatement s are precompiled on creation, which gives increased performance if they are used a sufficient number of times. SSO in the distribution package for information on how to install it.
Memory Usage Memory usage keeps increasing when using generated PreparedStatements. In our oppinion this is better than having a benchmark of our own, which could be designed in intternetcds a way as to give jTDS the edge.
These benchmarks are trs to download so we encourage you to do it and run them yourself. The “Connection refused” exception is thrown by jTDS when it is unable to connect to the server.
java – JDBC Driver for SQL Server , Class not | DaniWeb
Duplicate name in Manifest: Can coom be used in a multi threaded application? Why do column names more than 30 characters long, get chopped off at 30 characters? Why do I get a java.
Class-Path May 16, 9: When jdbf a stored procedure or any query, for that matter the response from the SQL Server is serialized in the same order it is executed in: Here are the results of the i-net test: Please be thoughtful, detailed and courteous, and adhere to our intrenetcds rules.
There may be a number of reasons why this could happen:. SQL is sent to the server each time without any preparation, literals are inserted in the SQL slower. Please note that this flag only alters the behavior of executeUpdate ; execute will still return all update counts. However, you can run any of the benchmarks yourself, the effort is minimal.
May 16, 9: Batch processing with executeBatch hangs or is unreliable on Sybase. For ttds, if you have a method that inserts a row into a table by creating a PreparedStatementusing it once and then closing it, your statement will be compiled internetvds once for each Connectionno matter how many times you call that method. If anybody know, how to solve this, kindly post me.
If that’s the case, replace jtds. In these circumstances the driver raises an exception and execution fails.
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. In order to change that you have to specify it explicitly in the Properties or the URL you supply when you create the connection.
Download sqlline JAR 1.2.0 with all dependencies
While doing this it times out, throwing the exception you see which means that jTDS was not able to get information about the running instances. What should I do?
Without the native SSO library installed you still have to provide the username and password because otherwise jTDS cannot determine user credentials.
If you experience this problem with versions 0. 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. This gives jTDS a 2x performance increase over the next fastest driver in some not so uncommon cases.