add oracle dictionary cache usage mode

database/oracle/mode/dictionarycacheusage.pm

@@ -0,0 +1,116 @@
+#
+# Copyright 2019 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package database::oracle::mode::dictionarycacheusage;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use Digest::MD5 qw(md5_hex);
+
+sub custom_hitratio_calc {
+    my ($self, %options) = @_;
+
+    my $delta_total = ($options{new_datas}->{$self->{instance} . '_gets'} - $options{old_datas}->{$self->{instance} . '_gets'});
+    my $delta_cache = ($options{new_datas}->{$self->{instance} . '_getmisses'} - $options{old_datas}->{$self->{instance} . '_getmisses'});
+    $self->{result_values}->{hit_ratio} = $delta_total ? (100 * $delta_cache / $delta_total) : 0;
+
+    return 0;
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'global', cb_prefix_output => 'prefix_global_output', type => 0 },
+    ];
+
+    $self->{maps_counters}->{global} = [
+        { label => 'get-hits', nlabel => 'dictionary.cache.get.hitratio.percentage', set => {
+                key_values => [ { name => 'getmisses', diff => 1 }, { name => 'gets', diff => 1 } ],
+                closure_custom_calc => $self->can('custom_hitratio_calc'),
+                output_template => 'get hit ratio %.2f%%',
+                output_use => 'hit_ratio', threshold_use => 'hit_ratio',
+                perfdatas => [
+                    { label => 'get_hit_ratio', value => 'hit_ratio', template => '%.2f', min => 0, max => 100, unit => '%' },
+                ],
+            }
+        },
+    ];
+}
+
+sub prefix_global_output {
+    my ($self, %options) = @_;
+
+    return 'SGA dictionary cache ';
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, statefile => 1, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments => {
+    });
+    
+    return $self;
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;    
+
+    my $query = q{
+        SELECT SUM(gets), SUM(gets-getmisses) FROM v$rowcache
+    };
+
+    $options{sql}->connect();
+    $options{sql}->query(query => $query);
+    my @result = $options{sql}->fetchrow_array();
+    $options{sql}->disconnect();
+    
+    $self->{global} = {
+        gets => $result[0],
+        getmisses => $result[1],
+    };
+
+    $self->{cache_name} = "oracle_" . $self->{mode} . '_' . $options{sql}->get_unique_id4save() . '_' .
+        (defined($self->{option_results}->{filter_counters}) ? md5_hex($self->{option_results}->{filter_counters}) : md5_hex('all'));
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check Oracle dictionary cache usage.
+
+=over 8
+
+=item B<--warning-*> B<--critical-*> 
+
+Thresholds.
+Can be: 'get-hits'.
+
+=back
+
+=cut

database/oracle/plugin.pm

@@ -38,6 +38,8 @@ sub new {
         'corrupted-blocks'         => 'database::oracle::mode::corruptedblocks',
         'data-files-status'        => 'database::oracle::mode::datafilesstatus',
         'datacache-hitratio'       => 'database::oracle::mode::datacachehitratio',
+        'dictionary-cache-usage'   => 'database::oracle::mode::dictionarycacheusage',
+        'library-cache-usage'      => 'database::oracle::mode::librarycacheusage',
         'event-waits-usage'        => 'database::oracle::mode::eventwaitsusage',
         'invalid-object'           => 'database::oracle::mode::invalidobject',
         'library-cache-usage'      => 'database::oracle::mode::librarycacheusage',