Munin contributed plugins

#!/usr/bin/perl -w

# Plugin for monitor oracle database reads.

#

# Licenced under GPL v2.

#

# Usage:

#

#       Symlink into /etc/munin/plugins/ and add the monitored

#       database to the filename. e.g.:

#

#       ln -s /usr/share/munin/plugins/oracle__database__hitratio \

#         /etc/munin/plugins/oracle_<databasename>_database__hitratio

#       This should, however, be given through autoconf and suggest.

#

#       If required, give username, password and/or Oracle server

#       host through environment variables.

#

#

# Parameters:

#

#       config   (required)

#

# Config variables:

#

#       dbhost     - Which database server to use. Defaults to

#                    'localhost'.

#       dbname     - Which database to use. Defaults to orl1

#       dbuser     - A Oracle user account with read permission to

#                    the given database. Defaults to

#                    'oracle'. Anyway, Munin must be told which user

#                    this plugin should be run as.

#       dbpass     - The corresponding password, if

#                    applicable. Default to undef.

#

# Magic markers

#%# family=auto

#%# capabilities=autoconf

use strict;

use DBI;

my $dbhost = $ENV{'dbhost'} || '127.0.0.1';

my $dbname = $ENV{'dbname'} || 'orl1';

my $dbuser = $ENV{'dbuser'} || 'oracle';

my $dbport = $ENV{'dbport'} || '1521';

my $dbpass = $ENV{'dbpass'} || '';

my $warning = $ENV{'warning'} || '90';

my $critical = $ENV{'critical'} || '96';

# Check for DBD::Oracle

if (! eval "require DBD::Oracle;") {

     exit 1;

}

my $dsn = "DBI:Oracle:dbname=$dbname;host=$dbhost;port=$dbport;sid=$dbname";

#print "$dsn\n";

my $dbh = DBI->connect ($dsn, $dbuser,

			$dbpass,

			{RaiseError =>1}) || die "";

if (exists $ARGV[0]) {

    if ($ARGV[0] eq 'autoconf') {

	# Check for DBD::Oracle

	if (! eval "require DBD::Oracle;") {

	     print "no (DBD::Oracle not found)";

	     exit 1;

	}

        if ($dbh) {

            print "yes\n";

            exit 0;

        } else {

            print "no Unable to access Database $dbname on host $dbhost as user $dbuser.\nError returned was: ". $DBI::errstr;

            exit 1;

	}

    }

    if ($ARGV[0] eq "config") {

	print "graph_title Oracle tablespace usage (in %) from $dbname\n";

	print "graph_args --upper-limit 100 -l 0\n";

	print "graph_vlabel %\n";

	print "graph_category Oracle\n";

	print "graph_info This graph shows the tablespace usage (in %)\n";

        print "graph_scale no\n";

        print "warning $warning\n";

        print "critical $critical\n";

	my $sql_curr = "SELECT unique tablespace_name from dba_data_files";

	my $sth_curr = $dbh->prepare($sql_curr);

	$sth_curr->execute();

        while ( my ($datname) = $sth_curr->fetchrow_array ) {

                print "$datname.label $datname\n";

                print "$datname.info $datname tablespace\n";

                print "$datname.type GAUGE\n";

	        print "$datname.draw LINE2\n";

	}

	exit 0;

    }

}

my $sql_curr = "select a.tablespace_name, b.free,a.total,trunc(b.free/a.total * 1000) / 10 prc \

		from ( \

		select tablespace_name,sum(bytes) total \

		from dba_data_files group by tablespace_name) A, \

		( select tablespace_name,sum(bytes) free \

		from dba_free_space group by tablespace_name) B \

		where a.tablespace_name=b.tablespace_name";

my $sth_curr = $dbh->prepare($sql_curr);

$sth_curr->execute();

while ( my ($datname,$free,$total,$prc) = $sth_curr->fetchrow_array ) {

	my $in_use = 100 - ($free/$total)*100;

	print "$datname.value $in_use\n";

}