To use Squirrel with Oracle do the following:

1. Download Squirrel and install: squirrel-sql
2. Download ojdbc14.jar from ojdbc14.jar.html or get it from Oracle installation in [oracle]\11.2SE\owb\wf\lib
   Put it into the folder C:\Program Files\squirrel-sql-3.5.3\lib
3. Start Squirrel and choose the driver to connect to oracle

Have first to install the driver for H2 Goto http://www.h2database.com. Download the jar from http://repo2.maven.org/maven2/com/h2database/h2/1.4.197/h2-1.4.197.jar

Select the jar, click on “List Drivers”, select the driver.

Then your client is ready