Copying the tnsnames.ora File
The tnsnames.ora file is required only if the Development Client will
            connect to an Oracle database. However, if the tnsnames.ora file is not
            copied to the correct directory on the Deployment Server, the user will receive an error
            message during the Web Client (Tools Releases prior to 9.2.9) or Development Client
            (Tools Release 9.2.9) installation process.
To copy the tnsnames.ora file:
- Obtain the 
tnsnames.orafile from an Oracle database configured to run with JD Edwards EnterpriseOne. - Tools Releases prior to 9.2.5.0: If the Development Client will use an
                    Oracle database installed locally on the Development Client machine, you must
                    use the following steps to ensure that the tnsnames.ora file has an entry to
                    allow the Development Client to connect to the local database:
- Edit the tnsnames.ora file.
 - If an entry for E1Local does not already exist, add this to the file:
                                    
E1LOCAL = (DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA =(SERVER = DEDICATED) (SERVICE_NAME = E1Local))) - Save the 
tnsnames.orafile. 
 - Copy the 
tnsnames.orato this directory on the Deployment Server:\\<deployment server name>\<release>\ClientWhen the Development Client is installed on a target machine, this file is automatically installed to the following directories: 
For WLSH4A (Tools Releases Prior to 9.2.9):
<Client Install Path>\system\JAS\EA_JAS_80.ear\webclient.war\WEB-INF\classes<Client Install Path>\<pathcode>\ini\sbf
For WASH4A (Tools Releases Prior to 9.2.9):
<Client Install Path>\JAS\EA_JAS_80.ear\webclient.war\WEB-INF<Client Install Path>\<pathcode>\ini\sbf
For Development Client (Tools Releases Prior to 9.2.5):
<64-bit Oracle database install path>\NETWORK\ADMIN
For Development Client (Tools Releases 9.2.9):
<Client Install Path>\<pathcode>\ini\sbf