You possibly need to bring your 10g client up to date with patches so authentication succeeds; I've seen similar things in the past. But, in general, why use 10g client if you are connecting to 12c? You may as well use the 12c client.

I forget whether 8i used service names or only the old "SID" names, but check you are using the correct tnsnames.ora syntax if you have upgraded the oracle client.

Chris

On 9/08/2016 1:36 AM, Mani, Arunkumar (BMS - India GDC) wrote:

I'll probably explain it with a piece of code and output, so everybody can 
explain the problem I face clearly.

If you look at 2 codes, the only change is I modified 8i client with 10g 
client. After that it couldn’t resolve the TNS connection string.

_Perl code with 8i client - works:_

#!/usr/local/bin/perl

#use DBI

#use strict;

use strict;

use lib '/u01/home/oracle/admin/site/lib/perl';

use DBI;

$ENV{ORACLE_HOME} = '/u01/home/oracle/product/8.1.7.4';

$ENV{TNS_ADMIN} = '/home/httpd/cgi-bin/oradba';

my $sid = "ECLD.WORLD";

my $usr = "mania2";

my $pas = "blah";

my $dbh = DBI->connect("dbi:Oracle:tns:$sid", $usr, $pas) or die $DBI::errstr;

Output:

bash-2.03$ ./perl_testing1.pl

DBI->connect(tns:ECLD.WORLD) failed: ORA-01017: invalid username/password; 
logon denied (DBD: login failed) at ./perl_testing1.pl line 14

ORA-01017: invalid username/password; logon denied (DBD: login failed) at 
./perl_testing1.pl line 14.

bash-2.03$

_Perl code with 10g client - not working:_

#!/usr/local/bin/perl

#use DBI

#use strict;

use strict;

use lib '/u01/home/oracle/admin/site/lib/perl';

use DBI;

$ENV{ORACLE_HOME} = '/u01/home/oracle/product/10.2.0';

$ENV{TNS_ADMIN} = '/home/httpd/cgi-bin/oradba';

my $sid = "ECLD.WORLD";

my $usr = "mania2";

my $pas = "blah";

my $dbh = DBI->connect("dbi:Oracle:tns:$sid", $usr, $pas) or die $DBI::errstr;

Output:

bash-2.03$ ./perl_testing1.pl

DBI->connect(tns:ECLD.WORLD) failed: ORA-12154: TNS:could not resolve the 
connect identifier specified (DBD: login failed) at ./perl_testing1.pl line 14

ORA-12154: TNS:could not resolve the connect identifier specified (DBD: login 
failed) at ./perl_testing1.pl line 14.

bash-2.03$

Arunkumar Mani

ITO Service Delivery Consultant

Database Engineering, BMS Account

arunkumar.m...@hpe.com

+91 80 338 59305  Office

+91 74062 71026  Mobile

Bangalore, Karnataka/India

hpe.com

-----Original Message-----
From: Howard, Chris [mailto:howa...@prpa.org]
Sent: Monday, August 8, 2016 7:55 PM
To: Mani, Arunkumar (BMS - India GDC) <arunkumar.m...@hpe.com>; Nelson, Erick <erick.nel...@hdsupply.com>; mohammed.must...@wipro.com; dbi-users@perl.org
Subject: RE: ORA-12154 - (DBD: login failed)

ORACLE_HOME not defined correctly?

(I would test by printing out all ENV from within script)

-----Original Message-----

From: Mani, Arunkumar (BMS - India GDC) [mailto:arunkumar.m...@hpe.com]

Sent: Monday, August 08, 2016 5:38 AM

To: Nelson, Erick; mohammed.must...@wipro.com <mailto:mohammed.must...@wipro.com>; 
dbi-users@perl.org <mailto:dbi-users@perl.org>

Subject: RE: ORA-12154 - (DBD: login failed)

Instead of @<tns_string>, we define the connection string in TWO_TASK, and it 
still looks for tnsnames.ora or sqlnet.ora for resolution and it fails.

Arunkumar Mani

ITO Service Delivery Consultant

Database Engineering, BMS Account

arunkumar.m...@hpe.com <mailto:arunkumar.m...@hpe.com>

+91 80 338 59305  Office

+91 74062 71026  Mobile

Bangalore, Karnataka/India

hpe.com

-----Original Message-----

From: Nelson, Erick [mailto:erick.nel...@hdsupply.com]

Sent: Monday, August 8, 2016 5:01 PM

To: Mani, Arunkumar (BMS - India GDC) <arunkumar.m...@hpe.com <mailto:arunkumar.m...@hpe.com>>; mohammed.must...@wipro.com <mailto:mohammed.must...@wipro.com>; dbi-users@perl.org <mailto:dbi-users@perl.org>

Subject: Re: ORA-12154 - (DBD: login failed)

Did you try TWO_TASK env var ?

<http://www.orafaq.com/wiki/TWO_TASK>

<http://www.orafaq.com/wiki/TWO_TASK>

Erick Nelson

Cell 858-740-6523

Home 760-930-0461

From: "Mani, Arunkumar (BMS - India GDC)" <arunkumar.m...@hpe.com<mailto:arunkumar.m...@hpe.com <mailto:arunkumar.m...@hpe.com%3cmailto:arunkumar.m...@hpe.com>>>

Date: Monday, August 8, 2016 at 1:14 AM

To: "mohammed.must...@wipro.com<mailto:mohammed.must...@wipro.com> <mailto:mohammed.must...@wipro.com%3cmailto:mohammed.must...@wipro.com%3e>" <mohammed.must...@wipro.com<mailto:mohammed.must...@wipro.com <mailto:mohammed.must...@wipro.com%3cmailto:mohammed.must...@wipro.com>>>, "dbi-users@perl.org<mailto:dbi-users@perl.org> <mailto:dbi-users@perl.org%3cmailto:dbi-users@perl.org%3e>" <dbi-users@perl.org<mailto:dbi-users@perl.org <mailto:dbi-users@perl.org%3cmailto:dbi-users@perl.org>>>

Subject: RE: ORA-12154 - (DBD: login failed)

All were done earlier. The problem is perl doesn't recognize my sqlnet.ora or 
tnsnames.ora, though I define TNS_ADMIN correctly in the script.

Note: This was working when we used Oracle 8 client.

Arunkumar Mani

ITO Service Delivery Consultant

Database Engineering, BMS Account

arunkumar.m...@hpe.com<mailto:arunkumar.m...@hpe.com 
<mailto:arunkumar.m...@hpe.com%3cmailto:arunkumar.m...@hpe.com>>

+91 80 338 59305  Office

+91 74062 71026  Mobile

Bangalore, Karnataka/India

hpe.com

[hpesm_pri_grn_pos_email_011116]

From: mohammed.must...@wipro.com<mailto:mohammed.must...@wipro.com <mailto:mohammed.must...@wipro.com%3cmailto:mohammed.must...@wipro.com>> [mailto:mohammed.must...@wipro.com]

Sent: Thursday, August 4, 2016 8:53 PM

To: Mani, Arunkumar (BMS - India GDC) <arunkumar.m...@hpe.com<mailto:arunkumar.m...@hpe.com <mailto:arunkumar.m...@hpe.com%3cmailto:arunkumar.m...@hpe.com>>>; dbi-users@perl.org<mailto:dbi-users@perl.org <mailto:dbi-users@perl.org%3cmailto:dbi-users@perl.org>>

Subject: Re: ORA-12154 - (DBD: login failed)

Testing: Manually, try connecting to DB using current .ora file content.

Solution:  update .ora file with right

Ip:

Port:

Sid/service name:

Regards,

Mustafa

+44-7440 56 12 32

________________________________

From: Mani, Arunkumar (BMS - India GDC) <arunkumar.m...@hpe.com<mailto:arunkumar.m...@hpe.com <mailto:arunkumar.m...@hpe.com%3cmailto:arunkumar.m...@hpe.com>>>

Sent: Thursday, August 4, 2016 8:41 PM

To: dbi-users@perl.org<mailto:dbi-users@perl.org 
<mailto:dbi-users@perl.org%3cmailto:dbi-users@perl.org>>

Subject: ORA-12154 - (DBD: login failed)

** This mail has been sent from an external source **

Hi,

We have a perl script which is used to connect to all our target databases ( close to 1000) and fetch the user related information and inturn compare it with our enterprise directory which is used to clear the inactive users periodically. This was a very old script and it was using Oracle 8i client. Since most of our systems were upgraded to 12c, 8i client is not compatible with 12c - so we had to update the perl script to use 10g client instead. After we did that, we are not able to connect to any databases and getting below errors. The script exclusively sets TNS_ADMIN to point to right sqlnet.ora.

Need your help to fix this.

ORA-12154: TNS:could not resolve the connect identifier specified (DBD: login 
failed)

Perl Version:

bash-2.03$ /usr/local/bin/perl -v

This is perl, version 5.005_03 built for sun4-solaris

Copyright 1987-1999, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the

GNU General Public License, which may be found in the Perl 5.0 source kit.

Complete documentation for Perl, including FAQ lists, should be found on

this system using `man perl' or `perldoc perl'.  If you have access to the

Internet, point your browser at http://www.perl.com/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.perl.com_&d=DQMFAg&c=G6gE9wZC434W5IaU4ofEKQ&r=dNrS-0eOrjqS9LI6Io5GnPqWzmfgaVqofJ4wYWYOmSA&m=XVdbSsalndF6Pso7F3PaPinBlO0uj660yZz1dCC7f50&s=4T41gcmdGOE5ioZTOKH4mMqv5ld3DywufUS-mMAEJJ0&e <http://www.perl.com/%3chttps:/urldefense.proofpoint.com/v2/url?u=http-3A__www.perl.com_&d=DQMFAg&c=G6gE9wZC434W5IaU4ofEKQ&r=dNrS-0eOrjqS9LI6Io5GnPqWzmfgaVqofJ4wYWYOmSA&m=XVdbSsalndF6Pso7F3PaPinBlO0uj660yZz1dCC7f50&s=4T41gcmdGOE5ioZTOKH4mMqv5ld3DywufUS-mMAEJJ0&e>=>, the Perl Home Page.

bash-2.03$

Arunkumar Mani

ITO Service Delivery Consultant

Database Engineering, BMS Account

arunkumar.m...@hpe.com<mailto:arunkumar.m...@hpe.com 
<mailto:arunkumar.m...@hpe.com%3cmailto:arunkumar.m...@hpe.com>>

+91 80 338 59305  Office

+91 74062 71026  Mobile

Bangalore, Karnataka/India

hpe.com

[hpesm_pri_grn_pos_email_011116]

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