All contexts must have access to the library files that contain the compiled servlets, filters, and listeners. The contexts are specified relative to <installdir>\apps\servlets, but the libraries can be in any location specified in the PATH environment variable on Windows, or the LD_LIBRARY_PATH environment variable on Linux/UNIX.

The standard deployment locations that the HydraExpress Agent knows about by default are <installdir>/lib and <installdir>/apps-lib directories (Linux/UNIX), and the <installdir>\bin and <installdir>\apps-bin directories (Windows). If you wish to use other locations, be sure to add them to the system's LD_LIBRARY_PATH or PATH environment variable.