轉自：http://www.puschitz.com/InstallingOracle9i.shtml#PatchingOracleIntelligentAgentOnRHAS3

Patching Oracle Intelligent Agent on RH AS 3
When you run "agentctl start" (Oracle 9.2.0.4), dbsnmp will crash: http://metalink.oracle.com. See bug/patch 3238244 for more information.

Before you apply the patch, make sure the instance is down!

Also make sure the opatch script appears in your $PATH. See "Patching Oracle9iR2 on Red Hat AS 3" for information on getting and installing opatch. To verify if opatch is in your $PATH, run the which command:

$ su - oracle
$ which opatch
/tmp/OPatch/opatch
$

To apply now the patch, run:

$ su - oracle
$ unzip p3238244_9204_LINUX.zip
$ cd 3238244
$ export PATH=$PATH:/sbin        # the patch needs "fuser" which is located in /sbin
$ opatch apply

Now you need to relink dbsnmp. This is the binary that crashed when running agentctl start. To find which makefile handles the linking of dbsnmp, you can run:

$ su - oracle
$ find $ORACLE_HOME -name "*.mk" | xargs grep -l dbsnmp
/u01/app/oracle/product/9.2.0/network/lib/ins_oemagent.mk
/u01/app/oracle/product/9.2.0/network/lib/env_oemagent.mk
$

I relinked dbsnmp and all associated executables which are maintained by the ins_oemagent.mk makefile:

$ su - oracle
$ cd $ORACLE_HOME/network/lib
$ make -f ins_oemagent.mk install

Now you should be able to start the agent:

$ su - oracle
$ agentctl start

NOTE: Don't forget to undo the changes (links) to /usr/bin/gcc and /usr/bin/g++ if you don't need it any more. Also don't forget the /etc/ld.so.preload file.

$ su - oracle
$ agentctl start

DBSNMP for Linux: Version 9.2.0.4.0 - Production on 07-JAN-2004 19:11:14

Copyright (c) 2003 Oracle Corporation.  All rights reserved.

Starting Oracle Intelligent Agent.../u01/app/oracle/product/9.2.0/bin/dbsnmpwd: line 156:  1855 Segmentation fault      nohup $ORACLE_HOME/bin/dbsnmp $*
>>$DBSNMP_WDLOGFILE 2>&1
/u01/app/oracle/product/9.2.0/bin/dbsnmpwd: line 156:  1868 Segmentation fault      nohup $ORACLE_HOME/bin/dbsnmp $* >>$DBSNMP_WDLOGFILE 2>&1
/u01/app/oracle/product/9.2.0/bin/dbsnmpwd: line 156:  1880 Segmentation fault      nohup $ORACLE_HOME/bin/dbsnmp $* >>$DBSNMP_WDLOGFILE 2>&1
/u01/app/oracle/product/9.2.0/bin/dbsnmpwd: line 156:  1892 Segmentation fault      nohup $ORACLE_HOME/bin/dbsnmp $* >>$DBSNMP_WDLOGFILE 2>&1

To resolve this problem, apply the patch p3238244_9204_LINUX.zip from[@more@]