This isn't Tomcat specific but general to any jsp container and its jvm.
I am working on a site where almost everything is done through the jsp
page plus one main java class to store state data.
The site's jsp page may do up to 7 queries on the database. On each
query, the statements are these:
Driver DriverDB = (Driver)Class.forName(db_DRIVER).newInstance();
Connection ConnDB =
DriverManager.getConnection(db_STRING,db_USERNAME,db_PASSWORD);
PreparedStatement StatementDB = ConnDB.prepareStatement("SELECT * from
table");
ResultSet resultDB = StatementDB.executeQuery();
My 2 questions are:
Does the forName call to load the driver get optimized out? Clearly the
driver need only load once.
Does the getConnection reuse the same connection that was done in the
previous call on the same jsp page?
There are some performance problems and I'm wondering if I should try to
clean the code up or if the jvm
does it for me through optimization. It's running on Tomcat 5.5.20 and
JVM 5.x.
The client won't pay for any major redesign so I'm looking for something
small that could make a big impact.
Thanks for any insight.
Coral
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