You want to push onto an array all occurrences of OC\d+-\d+, right?

use Modern::Perl;

my @found;

while( <DATA> ) {
    chomp;
    push @found, m/(OC\d+-\d+)/g;
}

say $_ for @found;


__DATA__
RTRV-PM-ALL:ADEL-OM3500-1:ALL:1898::,0-UP,NEND,,1-DAY,02-11,,;| ADEL-O
+M3500-1 09-02-12 03:46:54 M 1898 COMPLD "OC192-11,OC192:CVS,0,COMPL,N
+END,RCV,1-DAY,02-11,00-00,1" "OC192-11,OC192:ESS,0,COMPL,NEND,RCV,1-D
+AY,02-11,00-00,1" "OC192-11,OC192:PSCW,0,COMPL,NEND,RCV,1-DAY,02-11,0
+0-00,1" "OC192-11,OC192:PSCP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "O
+C192-11,OC192:PSD,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "OC192-12,OC1
+92:CVS,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "OC192-12,OC192:PSCW,0,C
+OMPL,NEND,RCV,1-DAY,02-11,00-00,1" >
RTRV-PM-ALL:ADEL-OM3500-1:ALL:1898::,0-UP,NEND,,1-DAY,02-11,,;| ADEL-O
+M3500-1 09-02-12 03:46:56 M 1898 COMPLD "OC192-12,OC192:PSCP,0,COMPL,
+NEND,RCV,1-DAY,02-11,00-00,1" "OC192-12,OC192:PSD,0,COMPL,NEND,RCV,1-
+DAY,02-11,00-00,1" "OC192-11-28,STS3C:CVP,0,COMPL,NEND,RCV,1-DAY,02-1
+1,00-00,1" "OC192-11-28,STS3C:UASP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00
+,1" "OC192-11-28,STS3C:FCP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "OC1
+92-11-145,STS3C:CVP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "OC192-11-1
+45,STS3C:ESP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" "OC192-11-145,STS3
+C:SESP,0,COMPL,NEND,RCV,1-DAY,02-11,00-00,1" ;
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