#!/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__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 db\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"; }