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Cannot connect to DB from remote computer (ORA-12545)

Ben.HJul 18 2013 — edited Jul 19 2013

Hello all,

Please help, I am stumped.  I am trying to connect to a database located at my work from at home.

I am running into the following issue (see command and error below):

-------------------------------

ansichart@ansivm:~/src/perl$ sqlplus aspxdba/********@aspxp2

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jul 18 21:15:09 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

ERROR:

ORA-12545: Connect failed because target host or object does not exist

-------------------------------

Here is my tnsnames.ora file (I have the service_name censored out for privacy reasons):

-------------------------------

ansichart@ansivm:~/src/perl$ cat $ORACLE_HOME/network/admin/tnsnames.ora

aspxp2 =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = TCP)(HOST = orarac9-scan)(PORT = 1521))

    )

    (CONNECT_DATA =

      (SERVICE_NAME = *****************)(UR=A)

    )

  )

-------------------------------

I have verified that I can establish a TCP connection to this DB server on the port specified, using the same info from the TNSnames.ora file (see below):

-------------------------------

ansichart@ansivm:~/src/perl$ nmap -sT -p 1521 orarac9-scan

Starting Nmap 5.21 ( http://nmap.org ) at 2013-07-18 20:53 CDT

Nmap scan report for orarac9-scan (10.1.13.115)

Host is up (0.0088s latency).

PORT     STATE SERVICE

1521/tcp open  oracle

Nmap done: 1 IP address (1 host up) scanned in 0.09 seconds

ansichart@ansivm:~/src/perl$

-------------------------------

I have another terminal opened up to a server at work and I can connect to the DB with sqlplus just fine.  I verified that the record for this database on the tnsnames.ora file is the same as it is at work.

In conclusion, I can connect to the Database at work, but I cannot at home, even though I am using the same connection information and verified that port 1521 is accessible on this Database server from at home.  So why can't I establish a DB connection?

Any ideas?

Thanks,

Ben

This post has been answered by Billy Verreynne on Jul 19 2013
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