Database Networking (MOSC)

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ORA-12170 - connection timed out

edited Mar 15, 2018 5:00AM in Database Networking (MOSC) 4 commentsAnswered

Greetings

environment -

  • oracle rac database - 12.1.x
  • oracle client - 12.2.x

facts -

  • Same TNS connection string work on database server
  • Same TNS connection string Do Not work on client side
  • nslookup to HOST value in tnsnames.ora is working
  • reverse nslookup to HOST value in tnsnames.ora is not working
  • ping is not working from client to database server
  • telnet <db-server-ip> <listener port> - status - connected

getting ORA-12170 when connect from client side to database server.

any tips please to diagnose and troubleshoot the issue

Thanks

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