ORA-12541 Unable To Connect To Remote Database Using 9i R2 EM Console Only. (Doc ID 341625.1)

Last updated on MARCH 18, 2011

Applies to:

Oracle Enterprise Manager - Version: 9.2.0.1 to 9.2.0.7 - Release: to 9.2
Oracle Net Services - Version: 9.2.0.1.0 and later    [Release: 9.2 and later]
Information in this document applies to any platform.

Symptoms

The following error message is reported trying to connect to a remote Oracle instance using the Enterprise Manager (EM) Standalone Console when connected via a Virtual Priviate Network (VPN) software to the backend network.

     ORA-12541 'TNS: NO LISTENER'

Unable to connect to the Oracle DB.

However, other Oracle9iR2 (9.2.0.1) applications and utilities from the same Windows machine worked, such as TNSPING and Sqlplus.

Cause

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