diff --git a/centreon-plugins/database/oracle/mode/rmanbackupage.pm b/centreon-plugins/database/oracle/mode/rmanbackupage.pm
index dd72b406c..2bd42d0b8 100644
--- a/centreon-plugins/database/oracle/mode/rmanbackupage.pm
+++ b/centreon-plugins/database/oracle/mode/rmanbackupage.pm
@@ -81,7 +81,7 @@ sub check_options {
         }
     }
 
-    if (defined($self->{option_results}->{timezone})) {
+    if (defined($self->{option_results}->{timezone}) && $self->{option_results}->{timezone} ne '') {
         $ENV{TZ} = $self->{option_results}->{timezone};
     }
 }
@@ -141,7 +141,7 @@ sub run {
                                           warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $label),
                                           critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $label),
                                           min => 0);
-            my $exit_code = $self->{perfdata}->threshold_check(value => $backup_age, threshold => [ { label => 'critical-' . $label, 'exit_litteral' => 'critical' }, { label => 'warning-' . $label, exit_litteral => 'warning' } ]);
+            my $exit_code = $self->{perfdata}->threshold_check(value => $backup_age, threshold => [ { label => 'critical-' . $label, exit_litteral => 'critical' }, { label => 'warning-' . $label, exit_litteral => 'warning' } ]);
             
             if (!$self->{output}->is_status(value => $exit_code, compare => 'ok', litteral => 1)) {
                 $self->{output}->output_add(severity => $exit_code,
diff --git a/centreon-plugins/database/oracle/mode/rmanbackupproblems.pm b/centreon-plugins/database/oracle/mode/rmanbackupproblems.pm
index 55c5e44b4..9d07ba507 100644
--- a/centreon-plugins/database/oracle/mode/rmanbackupproblems.pm
+++ b/centreon-plugins/database/oracle/mode/rmanbackupproblems.pm
@@ -81,7 +81,7 @@ sub run {
     $self->{sql}->query(query => $query);
     my $rman_backup_problems = $self->{sql}->fetchrow_array();
 
-    my $exit_code = $self->{perfdata}->threshold_check(value => $rman_backup_problems, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
+    my $exit_code = $self->{perfdata}->threshold_check(value => $rman_backup_problems, threshold => [ { label => 'critical', exit_litteral => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
     $self->{output}->output_add(severity => $exit_code,
                                   short_msg => sprintf("rman had %i problems during the last %i days", $rman_backup_problems, $self->{option_results}->{retention}));
     $self->{output}->perfdata_add(label => 'rman_backup_problems',
diff --git a/centreon-plugins/database/oracle/mode/rmanonlinebackupage.pm b/centreon-plugins/database/oracle/mode/rmanonlinebackupage.pm
index def67637f..b6d4d1d59 100644
--- a/centreon-plugins/database/oracle/mode/rmanonlinebackupage.pm
+++ b/centreon-plugins/database/oracle/mode/rmanonlinebackupage.pm
@@ -70,7 +70,7 @@ sub check_options {
        $self->{output}->option_exit();
     }
     
-    if (defined($self->{option_results}->{timezone})) {
+    if (defined($self->{option_results}->{timezone}) && $self->{option_results}->{timezone} ne '') {
         $ENV{TZ} = $self->{option_results}->{timezone};
     }
 }