How to know if SQL*net effectively works?

Hello,
I'd like to know if the listener is active with SQL*net V2. The only way I've found (except from using ps to see if it is here) is to use the "lsnrctl status" function. However this function always return 0, even if the tnslsnr daemon doesn't work. For the moment I search for the string "fail" in the message that it returns, but it is not really safe ;>)
Anyone having a cleaner solution?

Thanks in advance

Philippe

Philippe Bondono                          Internet: bondono_at_vnet.ibm.com
Dept 1403.30                              Tel. (+33) 67 34 45 64
CESA IBM de Montpellier                   Fax. (+33) 67 34 67 81
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