Problem in accessing Oracle Database Server from Linux Machine

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Operating Systems Linux Problem in accessing Oracle Database Server from Linux Machine
# 1  
Old 08-22-2014
Problem in accessing Oracle Database Server from Linux Machine

I am facing a strange issue in connecting to Oracle database from Linux Machine
- The connectivity is not failing all the time , the failure to success ratio is 1:70.
- Error "ORA-12545: Connect failed because target host or object does not exist"
- Majority of the time the connection is successful
- I am able to ping the target database server using the hostname defined in /etc/hosts
- There is another Oracle server which has a seamless connectivity.

Entry in tnsnames.ora
        (TYPE = SELECT)
        (METHOD = BASIC)
        (RETRIES = 180)
        (DELAY = 5)


Last edited by Franklin52; 08-22-2014 at 12:19 PM.. Reason: Please use code tags
# 2  
Old 08-22-2014
Does tnsping return successfully every time or is there a similar failure there?
# 3  
Old 08-22-2014
The tnsping is not currently available in the machine, I wonder if we are allowed to use it.
# 4  
Old 08-22-2014
Are either the DB or the client running on virtualised machines?
# 5  
Old 08-22-2014
no both the server are not VM
# 6  
Old 08-25-2014
Well, now we have the tnsping working.

[root@XXXXXX:xxx]# tnsping XXXX.XXXXXXXX.XX 5

TNS Ping Utility for Linux: Version - Production on 25-AUG-2014 09:34:53

Copyright (c) 1997 Oracle Corporation.  All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias
OK (220 msec)
OK (230 msec)
OK (230 msec)
OK (230 msec)

Last edited by radoulov; 08-25-2014 at 10:41 AM..
# 7  
Old 08-25-2014
Check Troubleshooting Guide for ORA-12545 / TNS-12545 Connect failed because target host or object does not exist (Doc ID 553328.1) on MOS.
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