Oracle alert log has below error occurring frequently. How to troubleshoot message?
Fatal NI connect error 12170.
VERSION INFORMATION: TNS for 32-bit Windows: Version 220.127.116.11.0 - Production Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 18.104.22.168.0 - Production Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 22.214.171.124.0 - Production Time: xxxxTracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS:operation timed out ns secondary err code: 12606 nt main err code: 0 nt secondary err code: 0 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=xx.xx.x.xxx)(PORT=xxxx)) WARNING: inbound connection timed out (ORA-3136)
Software/Hardware used: OOracle 11g, O.S., Windows Server 2003 Enterprise x64 SP2
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