tnsnames.ora

When the Deployment Server installer installs the local Oracle database (E1Local), the \bin directory is added to the start of the Windows PATH. If you have both the local Oracle database and the Oracle client installed (for example, if you are connecting to an Oracle database on a machine other than the Deployment Server), the local Oracle database version of the executables and tnsnames.ora are used. In order to maintain functionality of the Oracle client, you should add the remote database server tnsnames entries into the tnsnames.ora used by E1Local, which is located in this directory:

<OEE_installation_path>\network\admin

By default, the <OEE_installation_path> is C:\Oracle\E1Local, but the actual value is specified during OEE installation.