oracle.install


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post_install() {

	if [ -e `grep dba /etc/group` ]; then
		echo
		echo -n "creating group \"dba\" ..."
		groupadd dba
		echo "done"
		echo
	fi

	if [ -e `grep oracle /etc/passwd` ]; then
		echo -n "creating user \"oracle\" ..."
		useradd -d /usr/lib/oracle -g dba -s /bin/false oracle
		echo "done"
		echo
	fi

	echo -n "change directory rights ..."
	chown -R oracle:dba /usr/lib/oracle
	echo "done"
	echo

	echo -n "set sticky bit to oracle executable ..."
	chmod 6755 /usr/lib/oracle/product/11.2.0/xe/bin/oracle
	echo "done"
	echo

	if [ ! -d /etc/sysconfig ]; then
		echo -n "creating /etc/sysconfig ..."
		mkdir /etc/sysconfig
		echo "done"
		echo
	fi

	if [ ! -d /var/log/oracle ]; then
		echo -n "creating /var/log/oracle ..."
		mkdir /var/log/oracle
		chown -R oracle:dba /var/log/oracle
		echo "done"
		echo
	fi

	availphymem=`cat /proc/meminfo | grep '^MemTotal' | awk '{print $2}'`
	availphymem=`echo $availphymem / 1024 | bc`
	memory_target=`echo 0.40 \* $availphymem | bc | sed "s/\..*//"`
	if [ $memory_target -gt 1024 ];
	then
		memory_target=`echo 1024 \* 1048576 | bc`
	else
		memory_target=`echo $memory_target \* 1048576 | bc`
	fi

	/bin/sed -i "s/%memory_target%/$memory_target/g" /usr/lib/oracle/product/11.2.0/xe/config/scripts/init.ora
	/bin/sed -i "s/%memory_target%/$memory_target/g" /usr/lib/oracle/product/11.2.0/xe/config/scripts/initXETemp.ora

	echo
	echo "add your user to the \"dba\" group in order to use the oracle tools"
	echo
}

post_remove() {

	if [ `grep oracle /etc/passwd` ]; then
		echo -n "remove user \"oracle\" ..."
		userdel oracle
		echo "done"
	fi

	if [ `grep dba /etc/group` ]; then
		echo -n "remove group \"dba\" ..."
		groupdel dba
		echo "done"
	fi

	if [ -f /etc/rc.d/oracle-xe ]; then
		echo -n "remove /etc/rc.d/oracle-xe ..."
		rm /etc/rc.d/oracle-xe
		echo "done"
	fi

	if [ -f /etc/oratab ]; then
		echo -n "remove /etc/oratab ..."
		rm /etc/oratab
		echo "done"
	fi

	if [ -d /etc/sysconfig ]; then

		if [ -f /etc/sysconfig/oracle-xe ]; then
			echo -n "remove /etc/sysconfig/oracle-xe ..."
			rm -rf /etc/sysconfig/oracle-xe
			echo "done"
		fi

		if [ `ls /etc/sysconfig/|wc -l` -eq 0 ]; then
			echo -n "remove /etc/sysconfig ..."
			rm -rf /etc/sysconfig
			echo "done"
		fi
	fi
	if [ -f /etc/default/oracle-xe ]; then
		echo -n "remove /etc/default/oracle-xe ..."
		rm -rf /etc/default/oracle-xe
		echo "done"
	fi

	if [ -d /usr/lib/oracle ]; then
		echo -n "remove /usr/lib/oracle ..."
		rm -rf /usr/lib/oracle
		echo "done"
	fi

	if [ -d /var/log/oracle ]; then
		echo -n "remove /var/log/oracle ..."
		rm -rf /var/log/oracle
		echo "done"
	fi
}