For example, if you have a method that inserts a row into a table by creating a PreparedStatement , using it once and then closing it, your statement will be compiled only once for each Connection , no matter how many times you call that method. I still have some details to sort out, but I have a running instance now. The name of the jTDS jar file may be jtds It seems that the problem is on the first deployment and database initialization; it works fine with the JNDI name thereafter. Features such as generated keys retrieval, named stored procedure parameters, and save points are also implemented. Memory usage keeps increasing when using generated PreparedStatements.
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In case you are wondering if this is right, this is a quote from the CallableStatement API documentation: As I understand it, Liferay uses Hibernate but from what I could glean from the Hibernate documentation is that it will use the JDBC driver to handle the connections and pooling.
The application is huge, but here is a summary of how the error happens:. ClassNotFoundError is thrown by the classloader when it can not find a certain class.
Why do I still need to provide a username and password?
Normally, with a JDBC driver, PreparedStatement s are precompiled on creation, which gives increased performance if they are used a sufficient number of times. There is an entire persistence layer based on jTDS and switching to MS would take some days to accomplish. There are three possible causes to this if we exclude not creating the ResultSet with the appropriate type and concurrency in the first place:.
The exception happens at random JDBC calls. Where does one place an instance name in the connect string? Driver class, which means that jtds.
To Install and Configure Microsoft SQL (Sun GlassFish Web Space Server Installation Guide)
This is common if say you are querying a stored procedure that creates a temp table, runs updates against it and then returns the table as a result set. Why do I get a java.
Glassfish example source code file (microsoft_jtds_datasource.xml)
Other I didn’t find the answer to my problem in this FAQ. The “No suitable driver” exception is thrown by the DriverManager when none of the registered Driver implementations recognizes jtfs supplied URL. The name of the jTDS jar file may be jtds Memory Usage Memory usage keeps increasing when using generated PreparedStatements. CallableStatement output parameter getter throws java.
It is pretty low hanging fruit to test this.
Glassfish + JPA + SQLServer + JTDS Error casting to urce – Java – GUJ
The root cause is that triggers also return update counts and jTDS can’t make the difference between these update counts and the “real” one neither could any other Glassfisg Server client.
AlexK 5, 2 14 As a conclusion the only safe multithreading scenarios are these: Using a diff gglassfish to identify what was changed in the bundle to get Liferay to work will identify the changes that you also need to make to your glassfish server. This Managed Connection is not valid as the phyiscal connection is not usable at com.
The default install does not configure the SQL Browser service to start automatically so you must do it manually. I’m running Windows 7 Ultimate bit.
When jTDS sends the 8.