1-Check if you have a firewall between the SQLDeveloper and the Database Server. could be a hardware firewall on the network causing the problem.
2. Also check the PC settings and see if it is using a local software firewall. Turn off the local software firewall or open the specific ports.
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by: it-rexPosted on 2009-08-26 at 09:01:28ID: 25189195
gram77 before anything please execute the same code in sqlplus ;
and show the results;
sqldeveloper is really...you know