121 lines
3.6 KiB
Perl
121 lines
3.6 KiB
Perl
#
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# Copyright 2020 Centreon (http://www.centreon.com/)
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#
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# Centreon is a full-fledged industry-strength solution that meets
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# the needs in IT infrastructure and application monitoring for
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# service performance.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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package database::oracle::mode::datacachehitratio;
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use base qw(centreon::plugins::templates::counter);
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use strict;
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use warnings;
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use Digest::MD5 qw(md5_hex);
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sub custom_hitratio_calc {
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my ($self, %options) = @_;
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my $delta_phys = ($options{new_datas}->{$self->{instance} . '_physical_reads'} - $options{old_datas}->{$self->{instance} . '_physical_reads'});
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my $delta_cache =
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($options{new_datas}->{$self->{instance} . '_db_block_gets'} - $options{old_datas}->{$self->{instance} . '_db_block_gets'}) +
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($options{new_datas}->{$self->{instance} . '_consistent_gets'} - $options{old_datas}->{$self->{instance} . '_consistent_gets'});
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$self->{result_values}->{hit_ratio} = ($delta_cache == 0) ? 0 :
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((1 - ($delta_phys / $delta_cache)) * 100);
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return 0;
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}
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sub set_counters {
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my ($self, %options) = @_;
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$self->{maps_counters_type} = [
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{ name => 'global', type => 0 },
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];
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$self->{maps_counters}->{global} = [
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{ label => 'usage', set => {
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key_values => [ { name => 'physical_reads', diff => 1 }, { name => 'db_block_gets', diff => 1 },
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{ name => 'consistent_gets', diff => 1 } ],
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closure_custom_calc => $self->can('custom_hitratio_calc'),
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output_template => 'Buffer cache hit ratio is %.2f%%', output_error_template => 'Buffer cache hit ratio: %s',
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output_use => 'hit_ratio', threshold_use => 'hit_ratio',
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perfdatas => [
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{ label => 'sga_data_buffer_hit_ratio', value => 'hit_ratio', template => '%.2f', min => 0, max => 100, unit => '%' },
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],
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}
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},
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];
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}
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sub new {
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my ($class, %options) = @_;
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my $self = $class->SUPER::new(package => __PACKAGE__, %options, statefile => 1);
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bless $self, $class;
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$options{options}->add_options(arguments => {
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});
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return $self;
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}
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sub manage_selection {
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my ($self, %options) = @_;
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my $query = q{
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SELECT SUM(DECODE(name, 'physical reads', value, 0)),
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SUM(DECODE(name, 'db block gets', value, 0)),
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SUM(DECODE(name, 'consistent gets', value, 0))
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FROM sys.v_$sysstat
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};
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$options{sql}->connect();
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$options{sql}->query(query => $query);
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my @result = $options{sql}->fetchrow_array();
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$options{sql}->disconnect();
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$self->{global} = {
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physical_reads => $result[0],
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db_block_gets => $result[1],
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consistent_gets => $result[2],
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};
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$self->{cache_name} = "oracle_" . $self->{mode} . '_' . $options{sql}->get_unique_id4save() . '_' .
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(defined($self->{option_results}->{filter_counters}) ? md5_hex($self->{option_results}->{filter_counters}) : md5_hex('all'));
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}
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1;
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__END__
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=head1 MODE
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Check Oracle buffer cache hit ratio.
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=over 8
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=item B<--warning-usage>
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Threshold warning.
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=item B<--critical-usage>
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Threshold critical.
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=back
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=cut
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