The Network Adapter could not establish the connection : Vendor code 20
This error can be caused due to many issues like TNS listener is not responding or the max open sessions...
Tagged: SP2-0640: Not connected
Database / Must Know / Oracle Database / Troubleshooting
by Ramakanta · Published March 28, 2012 · Last modified November 27, 2016
This error can be caused due to many issues like TNS listener is not responding or the max open sessions...
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