This is a small program used to list the alert_logs of various databases listed in a text file (oratab). When I run the program the while loop picks up all the database names from the oratab but when the %dbLogLst hash is called in a subsequent foreach loop it randomly encounters variable initialization errors. The errors are random but consistent in that they databases giving errors are always the same. I'm hoping this is something obvious... I'm new to Perl so any help is greatly appreciated. 

-----------------------------------------------------------
#!/usr/bin/perl
#
use warnings;
use strict;
#
        my ($db,$line,$home,$boot,$bkup,$dbName,@dbList,%dbHomeLst,%db
+BkupLst,%dbBootLst,%dbLogLst);
        my $oratab = $ENV{'ORATAB'};
#
        open OT, "$ENV{'ORATAB'}"                                     
+   or die "Oratab not accessible ($!)";
        while (defined ($line = <OT>)) {
                next if $line =~ /^#/;
                next if $line =~ /^\s*$/;
                chomp $line;
                ($dbName, $home, $boot, $bkup) = split ":", $line;
                push (@dbList,$dbName);
        print "DBNAME = $dbName\n";
                $dbHomeLst{$dbName} = $home;
                $dbBkupLst{$dbName} = $bkup;
                $dbBootLst{$dbName} = $boot;
                $dbLogLst{$dbName} = < $ENV{'DIAG'}/$dbName/log/alert_
+$dbName.log >;
}
        close OT;
#
# My Tests
#
foreach $db (@dbList) {
        print "Name = $db\n";
        print "Home = $dbHomeLst{$db}\n";
        print "Bkup = $dbBkupLst{$db}\n";
        print "Boot = $dbBootLst{$db}\n";
        print "DbLog = $dbLogLst{$db}\n";
        }
-------------------------------------------------------------

[download]

The output: 

DBNAME = bea
DBNAME = busopp
DBNAME = cdms
DBNAME = cip
Name = bea
Home = /orasys00/app/oracle/product/9.2.0
Bkup = Y
Boot = Y
DbLog = /orasys00/app/dpc/bea/log/alert_bea.log
Name = busopp
Home = /orasys00/app/oracle/product/9.2.0
Bkup = Y
Boot = Y
Use of uninitialized value in concatenation (.) or string at listDbs.p
+l line 31.
DbLog = 
Name = cdms
Home = /orasys00/app/oracle/product/9.2.0
Bkup = Y
Boot = Y
DbLog = /orasys00/app/dpc/cdms/log/alert_cdms.log
Name = cip
Home = /orasys00/app/oracle/product/9.2.0
Bkup = Y
Boot = Y
Use of uninitialized value in concatenation (.) or string at listDbs.p
+l line 31.
DbLog =

[download]

Here is the sample OraTab file: 

bea:/orasys00/app/oracle/product/9.2.0:Y:Y
busopp:/orasys00/app/oracle/product/9.2.0:Y:Y
cdms:/orasys00/app/oracle/product/9.2.0:Y:Y
cip:/orasys00/app/oracle/product/9.2.0:Y:Y

[download]

In reply to Random Unitialized Value Errors by dbadude

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