How does a standalone program running in JDeveloper connects to Oracle

Hi,
Can anybody please answer me how does a standalone program running in JDeveloper10G is getting connected to Oracle ? Normally it should go and check the host address and DB service name in TNSNames.ora file and go ahead. With JDeveloper10 ever after changing the TNSNames.ora file name to some other name the program running in Jdeveloper is getting connected to database. Seems weird ? I was actually doing some testing with that. Anybody please tell me how does JDeveloper handles such situations...
Regards
CTR
Edited by: user8325217 on Oct 9, 2008 2:54 PM

Yes, it depends on the type of JDBC driver you are using. Oracle has two JDBC drivers for Java clients. The oci driver requires an installation of Oracle Client on each machine running the Java app, and has the potential to use the tnsnames.ora entries. The thin driver is pure Java, does not require Oracle Client, and therefore is not aware of tnsnames.ora files.
You want to look in your code for the part that's establishing a connection to the db, and look at the URL, which will tell you the type of driver being used, for example "jdbc:oracle:thin" or "jdbc:oracle:ociX".
You might want to check out the following FAQ on JDBC:
http://www.oracle.com/technology/tech/java/sqlj_jdbc/htdocs/jdbc_faq.htm
Brian
Product Manager, JDeveloper

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