Re: Connecting to Oracle through Perl.
But beware that setting ORACLE_HOME to a different version to the one
that's supplying the Oracle client library (via LD_LIBRARY_PATH etc)
is likely to cause problems, like not being able to get the text of an
error message, or worse.
Tim.
On Wed, Sep 18, 2002 at 01:28:20PM -0400, [EMAIL PROTECTED] wrote:
>
>
> -- Ellen Yu <[EMAIL PROTECTED]> on 09/18/02 09:59:41 -0700
>
> > A related question:
> >
> > Is there anyway to "hard code" the Oracle environment variables somewhere
> > in the perl directories such that if someone uses "/usr/bin/perl" they
> > will automatically use a certain Oracle client directory. My shop has
> > several client versions of Oracle and some of them would have to either
> > reset their environment variables or change their perl scripts.
> >
> > I'm trying to think of a way where they don't have to do either,
> > preferably without multiple installations of perl.
>
> Use a single module that checks the versions and exports
> an environment based on the internal logic. Locate the
> module in separate perl installations and you'd have perl-
> specific settings; share them and you'd have oracle-specific
> settings.
>
> Something like:
>
> my %baseenv =
> (
> foo => 'bar',
> ...
>
> # constant between shells
>
> HOME=> $ENV{HOME},
> TERM=> $ENV{TERM},
> ...
> );
>
> if( (my $a = subcall_that_checks_oracle) eq '1.2.3.4' )
> {
> $baseenv{ORACLE_HOME} = 'whatever'
> }
> elsif( $a eq '4.3.2.1' )
> {
> $baseenv{ORACLE_HOME} = 'whatever-else';
> }
>
>
>
> %ENV = %baseenv;
>
> exit system( $ENV{SHELL} );
>
>
>
>
> --
> Steven Lembark 2930 W. Palmer
> Workhorse Computing Chicago, IL 60647
>+1 800 762 1582
Re: Connecting to Oracle through Perl.
-- Ellen Yu <[EMAIL PROTECTED]> on 09/18/02 09:59:41 -0700
> A related question:
>
> Is there anyway to "hard code" the Oracle environment variables somewhere
> in the perl directories such that if someone uses "/usr/bin/perl" they
> will automatically use a certain Oracle client directory. My shop has
> several client versions of Oracle and some of them would have to either
> reset their environment variables or change their perl scripts.
>
> I'm trying to think of a way where they don't have to do either,
> preferably without multiple installations of perl.
Use a single module that checks the versions and exports
an environment based on the internal logic. Locate the
module in separate perl installations and you'd have perl-
specific settings; share them and you'd have oracle-specific
settings.
Something like:
my %baseenv =
(
foo => 'bar',
...
# constant between shells
HOME=> $ENV{HOME},
TERM=> $ENV{TERM},
...
);
if( (my $a = subcall_that_checks_oracle) eq '1.2.3.4' )
{
$baseenv{ORACLE_HOME} = 'whatever'
}
elsif( $a eq '4.3.2.1' )
{
$baseenv{ORACLE_HOME} = 'whatever-else';
}
%ENV = %baseenv;
exit system( $ENV{SHELL} );
--
Steven Lembark 2930 W. Palmer
Workhorse Computing Chicago, IL 60647
+1 800 762 1582
Re: Connecting to Oracle through Perl.
A related question: Is there anyway to "hard code" the Oracle environment variables somewhere in the perl directories such that if someone uses "/usr/bin/perl" they will automatically use a certain Oracle client directory. My shop has several client versions of Oracle and some of them would have to either reset their environment variables or change their perl scripts. I'm trying to think of a way where they don't have to do either, preferably without multiple installations of perl. Regards, Ellen Yu
Re: Connecting to Oracle through Perl.
On Wed, Sep 18, 2002 at 06:54:13PM +0530, Sridhar Saragu wrote: > Hi, > > Can somebody tell me where the Perl exactly look for tnsnames.ora while > connecting to Oracle ? (like home, oracle_home, tns_admin etc ...). I want > to > > know the order in which it looks & the directories ? To quote Star Wars: "Use the source, Luke"! See load_dbnames() in Oracle.pm Tim.
RE: Connecting to Oracle through Perl.
The Oracle client looks for tnsnames.ora in the
$ORACLE_HOME/network/admin directory. We typically set the Perl
variable $ENV{ORACLE_HOME} to the location of the Oracle installation in
our database connection modules prior to any attempt to open a database
connection.
-dpf-
---
David P. Fannin
Database Administrator [EMAIL PROTECTED]
UM-Rolla Computing and Information Services FAX (573) 341-4216
URL http://www.umr.edu/~dpf PHONE (573) 341-4841
---
-Original Message-
From: Sridhar Saragu [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 18, 2002 8:24 AM
To: [EMAIL PROTECTED]
Subject: Connecting to Oracle through Perl.
Hi,
Can somebody tell me where the Perl exactly look for tnsnames.ora
while connecting to Oracle ? (like home, oracle_home, tns_admin etc
). I want to
know the order in which it looks & the directories ?
Thanks & Regards
Sridhar
Re: Connecting to Oracle through Perl.
on the Tru64 unix box we are using it is found at : /usr/app/oracle/product/7.3.4/network/admin/tnsnames.ora hope this helps cheers Edd >>> "Sridhar Saragu" <[EMAIL PROTECTED]> 09/18/02 14:21 PM >>> Hi, Can somebody tell me where the Perl exactly look for tnsnames.ora while connecting to Oracle ? (like home, oracle_home, tns_admin etc ...). I want to know the order in which it looks & the directories ? Thanks & Regards Sridhar
RE: Connecting to Oracle through Perl.
I am pretty sure this is supposed to reside in /etc. I know that on our HP-UX boxes the tnsnames.ora is in /etc and we use Perl for some database access. -Original Message- From: Sridhar Saragu [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 18, 2002 8:24 AM To: [EMAIL PROTECTED] Subject: Connecting to Oracle through Perl. Hi, Can somebody tell me where the Perl exactly look for tnsnames.ora while connecting to Oracle ? (like home, oracle_home, tns_admin etc ...). I want to know the order in which it looks & the directories ? Thanks & Regards Sridhar
