Re: systemd issues
- From: "Radoulov, Dimitre" <cichomitiko@xxxxxxxxx>
- To: mschmitt@xxxxxxxxxxxx, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 2 May 2019 09:52:19 +0200
Hello,
I wrote a simple script that seems to work, it starts/stops multiple
Oracle instances and listeners (it looks for entries with Y in oratab).
The content of the systemd service definition is reported in the header.
You could try to use it as a template and adapt it for your environment.
Dimitre
On 01/05/2019 22.00, Michael Schmitt wrote:
Hi Oracle-l
Has anyone had any luck getting systemd to play nicely with Oracle
databases? It seems like every document I have read offers different
suggestions and each of those come with their own set of issues
The main issue we are having is systemd killing the oracle processes
in different circumstances (when databases are manually restarted due
to cold backups/patching/etc). We really just want systemd to call
our custom startup/shutdown scripts when the server reboots (and
shutdown the database in advance of the network), instead of trying to
manage the database processes
Thanks in advance
#!/bin/sh
# description: Oracle auto start-stop script.
# /lib/systemd/system/dbora.service
# systemctl daemon-reload
# [Unit]
# Description=The Oracle Database Service
# After=syslog.target network.target
#
# [Service]
# # systemd ignores PAM limits, so set any necessary limits in the service.
# # Not really a bug, but a feature.
# #
https://bugzilla.redhat.com/show_bug.cgi?id=754285
# LimitMEMLOCK=infinity
# LimitNOFILE=65535
#
# #Type=simple
# # idle: similar to simple, the actual execution of the service binary is
delayed
# # until all jobs are finished, which avoids mixing the status output
with shell output of services.
# # Type=idle
# Type=forking
# KillMode=none
# TimeoutStopSec=10min
# RemainAfterExit=yes
# User=oracle
# Group=oinstall
# Restart=no
# ExecStart=/usr/local/bin/dborasd start
# ExecStop=/usr/local/bin/dborasd stop
#
# [Install]
# WantedBy=multi-user.target
_progname=${0##*/}
_logdir=/var/log
_logfile=${_progname}.log
_oratab=/etc/oratab
_oraenv=/usr/local/bin/oraenv
_ora_owner=oracle
_lockfile=/tmp/$_progname.$$
[ -f "$_lockfile" ] && {
printf >&2 'another instance of %s is running, exiting ...\n' "$_progname"
exit 1
}
trap 'rm -rf "$_lockfile"' EXIT INT TERM HUP
_usage() {
cat << EOF >&2
usage: $_progname [stop|start|status]
EOF
exit 1
}
(( $# != 1 )) && _usage
[ -f "$_oratab" ] || {
printf >&2 '%s is missing!\n' "$_oratab"
exit 1
}
_dbs=( $( grep '^ *[^#].*:Y *$' "$_oratab" | cut -d: -f1,2 ) )
(( "${#_dbs[@]}" )) || exit
_ora_manage_db() {
local _ora_sid=$1
local _ora_owner=$2
local _ora_action=$3
local _ret
local _sql_status='select null from dual;'
local _sql_start='startup;'
local _sql_stop='shutdown immediate;'
local _sql_abort='shutdown abort;'
case $_ora_action in
( stop ) _current_sql=$_sql_stop ;;
( start ) _current_sql=$_sql_start ;;
( status ) _current_sql=$_sql_status ;;
( abort ) _current_sql=$_sql_abort ;;
( * ) return 1 ;;
esac
_sql="
whenever sqlerror exit failure
whenever oserror exit failure
$_current_sql
exit
"
#exec > /dev/null 2>&1
ORAENV_ASK=NO
ORACLE_SID="$_ora_sid"
PATH=$PATH:/usr/local/bin
export ORAENV_ASK ORACLE_SID PATH
. "$_oraenv" > /dev/null
"$ORACLE_HOME"/bin/sqlplus -sl / as sysdba <<< "$_sql" > /dev/null 2>&1 ||
return 1
}
_ora_manage_listener() {
local _ora_sid=$1
local _ora_owner=$2
local _ora_action=$3
case $_ora_action in
( stop ) _cmd=stop ;;
( start ) _cmd=start ;;
( status ) _cmd=status ;;
( * ) return 1 ;;
esac
export _cmd
#exec > /dev/null 2>&1
ORAENV_ASK=NO
ORACLE_SID="$_ora_sid"
PATH=$PATH:/usr/local/bin
export ORAENV_ASK ORACLE_SID PATH
. "$_oraenv" > /dev/null
if [ -f "$ORACLE_HOME"/network/admin/listener.ora ]; then
if grep -qi "^LISTENER_$_ora_sid" "$ORACLE_HOME"/network/admin/listener.ora;
then
_listener="$( tr '[:lower:]' '[:upper:]' <<< LISTENER_$_ora_sid )"
elif grep -qiw "^LISTENER" "$ORACLE_HOME"/network/admin/listener.ora; then
_listener=LISTENER
else
_listener=
fi
fi
export _listener
[ -n "$_listener" ] &&
"$ORACLE_HOME"/bin/lsnrctl "$_cmd" "$_listener" > /dev/null 2>&1 || return 1
}
case $1 in
( start )
unset _rc
for _db in "${_dbs[@]}"; do
_ora_sid="${_db%:*}"
_ora_manage_db "$_ora_sid" "$_ora_owner" "status" && {
printf '%s is already running!\n' "$_ora_sid"
continue
}
_ora_manage_db "$_ora_sid" "$_ora_owner" "start" &&
printf >&2 'start up succeeded for %s\n' "$_ora_sid" || {
printf >&2 'start up failed for %s\n' "$_ora_sid"
_rc+=( $? )
}
_ora_manage_listener "$_ora_sid" "$_ora_owner" "status" && {
printf >&2 'listener %s is already running:\n' "listener_$_ora_sid"
continue
}
_ora_manage_listener "$_ora_sid" "$_ora_owner" "start" &&
printf >&2 'listener %s started\n' "listener_$_ora_sid" || {
printf >&2 'listener %s failed to start\n' "listener_$_ora_sid"
_rc+=( $? )
}
for _c in ${_rc[@]}; do
(( _c )) || exit 1
done
done
;;
( status )
unset _rc
for _db in "${_dbs[@]}"; do
_ora_sid="${_db%:*}"
_ora_manage_db "$_ora_sid" "$_ora_owner" "status" &&
printf >&2 'status succeeded for %s\n' "$_ora_sid" || {
printf >&2 'status failed for %s\n' "$_ora_sid"
_rc+=( $? )
}
_ora_manage_listener "$_ora_sid" "$_ora_owner" "status" &&
printf >&2 'status succeeded for %s\n' "listener for $_ora_sid" || {
printf >&2 'status failed for %s\n' "listener for $_ora_sid"
_rc+=( $? )
}
done
for _c in ${_rc[@]}; do
(( _c )) || exit 1
done
;;
( stop )
unset _rc
for _db in "${_dbs[@]}"; do
_ora_sid="${_db%:*}"
_ora_manage_db "$_ora_sid" "$_ora_owner" "status" || {
printf >&2 'instance already down: %s\n' "$_ora_sid"
continue
}
_ora_manage_db "$_ora_sid" "$_ora_owner" "stop" &&
printf >&2 'stop succeeded for %s\n' "$_ora_sid" || {
printf >&2 'stop failed for %s\n' "$_ora_sid"
_rc+=( $? )
}
_ora_manage_listener "$_ora_sid" "$_ora_owner" "status" || {
printf >&2 'listener is already down: \n'
continue
}
_ora_manage_listener "$_ora_sid" "$_ora_owner" "stop" &&
printf >&2 'listener %s stopped\n' listener_"$_ora_sid" || {
printf >&2 'listener %s failed to start\n' listener_"$_ora_sid"
_rc+=( $? )
}
for _c in ${_rc[@]}; do
(( _c )) || exit 1
done
done
;;
( * ) _usage
;;
esac
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