delete query using perl dbi

I am having an issue with delete when I use the below code to delete the data from the table.

#!/usr/bin/perl

use strict;
use warnings;
use DBI;
use DBD::Oracle;


my $dbh=DBI->connect("dbi:Oracle:host=fit.fmr.com;port=1521;service_name=user1","passwd1", "userdev");

my $rows = $dbh->do("DELETE from cnv_batches where PROJECT_CD='METLIFE'");
 
 print "Number of rows deleted: $rows";
 
$dbh->disconnect();

when I run the above script I get the below error.  No rows are deleted.

Number of rows deleted: 0E0
sduser1Asked:
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FishMongerCommented:
Start by adding error checking/handling on the DB calls.

Then run a select statement using the exact same from and where clause either from within the script or directly from the cli to verify that it returns the expected records.

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FishMongerCommented:
Does the table have any foreign key constraints?  If so, it could be failing due to those constraints.
sduser1Author Commented:
Sorry for the delay. I was out for few days. The query was going to the wrong db. The select statement helped in figuring out.
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Perl

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