grid infrastructure 提示“[INS-40404] The installer has detected a configured instance of oracle grid infrastructure software on the server!

今天是2013-12-03，描述一下出现这个错误的过程，我没按照正常的方式删掉 grid infrastructure，而是直接删掉了安装目录，但是并不知道在安装grid infrastructure的时候会做什么隐含的操作，因此在我重新安装的时候就出现了如下所示的错误。

这个时候，我尝试了多种办法，结果还是不行(其中包括再次按照正常卸载步骤去操作)。事情往往是这样的，我们换一个思维角度往往就会有一个新的解决办法。既然在重新安装的时候出现这个问题，那么肯定可以从安装脚本内容去分析是到了那一步才会提示这个错误：

#!/bin/sh

# The environment variable $SRCHOME cannot be set during the installation

unset SRCHOME

AWK=/bin/awk

SED=/bin/sed

UNAME=/bin/uname

GETCONF=/usr/bin/getconf

BUNDLE=crs

if [ `$UNAME` = "AIX" ]; then

OSLEVEL=/bin/oslevel

UNAME=/bin/uname

CUT=/bin/cut

if [ "hello$IGNOREOSLEVEL" = "hello" ]; then

MAIN_VERSION=`$OSLEVEL -r | $CUT -d"-" -f1`;

MinorVersion1=`$OSLEVEL -r | $CUT -d"-" -f2`;

if [ $MAIN_VERSION -lt "5300" ]; then

echo "nrunInstaller needs minimum oslevel : "5300-05-06"n";

exit 0;

fi

if [ $MAIN_VERSION -eq "5300" ]; then

if [ MinorVersion1 -lt "05" ]; then

echo "nrunInstaller needs minimum oslevel : "5300-05-06"n";

exit 0;

else

if [ $MinorVersion1 -eq "05" ]; then

MinorVersion2=`$OSLEVEL -s | $CUT -d"-" -f3`;

if [ $MinorVersion2 -lt "06" ]; then

echo "nrunInstaller needs minimum oslevel : "5300-05-06"n";

exit 0;

fi

fi

fi

fi

fi

fi

if [ `$UNAME` = "SunOS" ]; then

OCR_LOC=/var/opt/oracle/ocr.loc

else

OCR_LOC=/etc/oracle/ocr.loc

fi

if [ `$UNAME` = "Linux" ]; then

if [ -e $GETCONF ]; then

value=`$GETCONF LONG_BIT`

if [ $value != 64 ]; then

echo ""You are attempting to install 64-bit Oracle on a 32-bit operating system. This is not supported and will not work."";

exit 126; #corresponding to the exit code of oui

fi

fi

fi

LOCALONLY=local_only

LOCAL=TRUE

SILENT=FALSE

CMDDIR=`dirname $0`

if [ "$CMDDIR" = "." ]; then

CMDDIR=`pwd`;

fi

# Replace relative path with fully qualified path.

if [ ! "`echo $CMDDIR|grep '^/'`" ]; then

CMDDIR=`pwd`/$CMDDIR;

fi

if [ x${PATH} != x ]; then

PATH=/usr/bin:/usr/ccs/bin:$PATH:$CMDDIR/install

export PATH

else

PATH=/usr/bin:/usr/ccs/bin:$CMDDIR/install

export PATH

fi

# Determine whether there is an existing CRS or not.

# Local is value of local_only in ocr.loc.

# False means there is an existing CRS installation on the system.

if [ -r $OCR_LOC ]; then

LOCAL=`$AWK -F= /$LOCALONLY/'{print $2}' $OCR_LOC |

$SED 'y/aeflrstu/AEFLRSTU/'`

fi

case "$BUNDLE" in

db)

# One-click: only if there is no cmd line argument and it's not on CRS node

if [ $# -gt 0 -o "$LOCAL" = "FALSE" -o

! -r $CMDDIR/install/oneclick.properties ]; then

$CMDDIR/install/.oui $*

else

$CMDDIR/install/.oui -oneclick

fi

;;

client)

$CMDDIR/install/.oui $* CLUSTER_NODES={}

;;

crs)

$CMDDIR/install/.oui $* -formCluster

;;

dv)

$CMDDIR/install/.oui $* -oneclick

;;

dbbundle)

for arg in "$@"

do

arg=`echo $arg | $SED 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`

if [ "$arg" = "-silent" ]; then

SILENT=TRUE

break

fi

done

if [ "$SILENT" = "TRUE" ]; then

$CMDDIR/install/.oui $*

else

$CMDDIR/install/.oui $* -oneclick -dbbundle

fi

;;

*)

$CMDDIR/install/.oui $*

;;

esac

上边为安装脚本，可以看到正是出现了上边标红部分才验证不过去。

至此可以继续进行安装。