Applications Upgrade Guide for UNIX with IBM DB2 for Linux, UNIX, and WindowsRuntime ProblemsRuntime Problems This section discusses: Jde.log shows ORA-12541: TNS:no listener User gets a pop-up window prompting for E1Local DB user and password and Jde.log shows OCI0000141 - Error - ORA-01017: invalid username/password; logon denied tnsnames.ora