diff --git a/database/db2/dbi.pm b/database/db2/dbi.pm
new file mode 100644
index 000000000..434c07221
--- /dev/null
+++ b/database/db2/dbi.pm
@@ -0,0 +1,42 @@
+#
+# Copyright 2021 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::db2::dbi;
+
+use base qw(centreon::plugins::dbi);
+
+use strict;
+use warnings;
+
+sub connect {
+    my ($self, %options) = @_;
+
+    if ($self->{data_source} =~ /PROTOCOL=TCPIP/) {
+        $self->{data_source} .= 'UID=' . $self->{username} . ';'
+            if ($self->{data_source} !~ /UID/ && defined($self->{username}));
+        $self->{data_source} .= 'PWD=' . $self->{password} . ';'
+            if ($self->{data_source} !~ /PWD/ && defined($self->{password}));
+    }
+    $self->SUPER::connect(%options);
+}
+
+1;
+
+__END__
diff --git a/database/db2/mode/connectedusers.pm b/database/db2/mode/connectedusers.pm
new file mode 100644
index 000000000..761bafc13
--- /dev/null
+++ b/database/db2/mode/connectedusers.pm
@@ -0,0 +1,98 @@
+#
+# Copyright 2021 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package database::db2::mode::connectedusers;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+    
+    $options{options}->add_options(arguments => { 
+        "warning:s"               => { name => 'warning', },
+        "critical:s"              => { name => 'critical', },
+    });
+
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::init(%options);
+
+    if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
+        $self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{option_results}->{warning} . "'.");
+        $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
+        $self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{option_results}->{critical} . "'.");
+        $self->{output}->option_exit();
+    }
+}
+
+sub run {
+    my ($self, %options) = @_;
+    # $options{sql} = sqlmode object
+    $self->{sql} = $options{sql};
+
+    $self->{sql}->connect();
+    $self->{sql}->query(query => q{SELECT COUNT(*) FROM v$session WHERE type = 'USER'});
+    my $users = $self->{sql}->fetchrow_array();
+    $self->{sql}->disconnect();
+
+    my $exit_code = $self->{perfdata}->threshold_check(value => $users, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
+    $self->{output}->output_add(severity => $exit_code,
+                                  short_msg => sprintf("%i Connected user(s).", $users));
+    $self->{output}->perfdata_add(label => 'connected_users',
+                                  value => $users,
+                                  warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
+                                  critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
+                                  min => 0);
+
+    $self->{output}->display();
+    $self->{output}->exit();
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check Oracle connected users.
+
+=over 8
+
+=item B<--warning>
+
+Threshold warning.
+
+=item B<--critical>
+
+Threshold critical.
+
+=back
+
+=cut
diff --git a/database/db2/plugin.pm b/database/db2/plugin.pm
new file mode 100644
index 000000000..5b2ac4790
--- /dev/null
+++ b/database/db2/plugin.pm
@@ -0,0 +1,107 @@
+#
+# Copyright 2021 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package database::db2::plugin;
+
+use strict;
+use warnings;
+use base qw(centreon::plugins::script_sql);
+
+sub new {
+    my ($class, %options) = @_;
+    
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '0.1';
+    $self->{modes} = {
+        'collection'               => 'centreon::common::protocols::sql::mode::collection',
+        'connection-time'          => 'centreon::common::protocols::sql::mode::connectiontime',
+        'connected-users'          => 'database::db2::mode::connectedusers'
+    };
+
+     $self->{sql_modes}->{dbi} = 'database::db2::dbi';
+
+    return $self;
+}
+
+sub init {
+    my ($self, %options) = @_;
+
+    $self->{options}->add_options(
+        arguments => {
+            'server:s@'  => { name => 'server' },
+            'port:s@'    => { name => 'port' },
+            'database:s' => { name => 'database' }
+        }
+    );
+    $self->{options}->parse_options();
+    my $options_result = $self->{options}->get_options();
+    $self->{options}->clean();
+
+    if (defined($options_result->{server})) {
+        $self->{sqldefault}->{dbi} = [];
+        for (my $i = 0; $i < scalar(@{$options_result->{server}}); $i++) {
+            next if ($options_result->{server}->[$i] eq '');
+
+            $self->{sqldefault}->{dbi}->[$i] = { data_source => 'DB2:PROTOCOL=TCPIP;hostname=' . $options_result->{server}->[$i] };
+            if (!defined($options_result->{database}) || $options_result->{database} eq '') {
+                $self->{output}->add_option_msg(short_msg => 'Need to specify --database option');
+                $self->{output}->option_exit();
+            }
+            if (!defined($options_result->{port}->[$i]) || $options_result->{port}->[$i] eq '') {
+                $self->{output}->add_option_msg(short_msg => 'Need to specify --port option');
+                $self->{output}->option_exit();
+            }
+            $self->{sqldefault}->{dbi}->[$i]->{data_source}  .= ';PORT=' . $options_result->{port}->[$i];
+            $self->{sqldefault}->{dbi}->[$i]->{data_source}  .= ';DATABASE=' . $options_result->{database} . ';';
+        }
+    } elsif (defined($options_result->{database}) && $options_result->{database} ne '') {
+        $self->{sqldefault}->{dbi} = [ { data_source => 'DB2;' . $options_result->{database} } ];
+    }
+
+    $self->SUPER::init(%options);    
+}
+
+1;
+
+__END__
+
+=head1 PLUGIN DESCRIPTION
+
+Check DB2 Server.
+
+=over 8
+
+=item B<--server>
+
+Domain name or IP address of the Db2 database system (Uncataloged database connections)
+
+=item B<--port>
+
+TCP/IP server port number that is assigned to the Db2 database system
+
+=item B<--database>
+
+Name for the Db2 database system. If --server is not set, it's a cataloged connection (database alias).
+
+=back
+
+=cut