Fahad, According to oracle metalink note : 228217.1 fact: MS Windows NT fact: Oracle Server - Enterprise Edition 8.1.7 fact: Oracle Net 8.1.7 symptom: Clients can't connect using Oracle Net symptom: TNS-12500 / ORA-12500: TNS:listener failed to start a dedicated server process symptom: TNS-12560 / ORA-12560: TNS:protocol adapter error symptom: TNS-00530: TNS: Protocol adapter error symptom: Local connections can be established cause: The listener has been started using a different (e.g. local System) account while the OracleService has been started using another (e.g. a named Administrator) account. In that situation the listener may not be allowed to create dedicated server processes which are under Windows created as threads within the Oracle.exe. fix: Verify that the OracleService and the ListenerService have been started using the same account. Unless for special reasons, the default local System account should not be changed. Best Regards, Syed Jaffar Hussain Visit us on www.alfransi.com.sa ====== Banque Saudi Fransi - Privacy Notice ====== This message is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any use of this information by persons or entities other than the intended recipient is prohibited. If you have received this in error, please contact the sender and delete the material from your computer. Any opinions and other information contained in this message that do not relate to the official business of Banque Saudi Fransi shall be understood as neither given or endorsed by it. Although precautions have been taken to ensure no viruses are present in this email, BSF cannot accept responsibility for any loss or damage arising from the use of this email or attachments. ====== Banque Saudi Fransi - Privacy Notice ====== ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------