Oracle Server 11.2.0.1.0 64-bit fails when invoked from InstallShield

Question

I'm trying to install the Oracle Server 11.2.0.1.0 64-bit on Windows 2008 SP1 from the InstallShield 2010.
The installation is silent. Invoked by command line:
J:\Oracle_11.2.0_x64\OracleServer_11.2.0.1_x64\setup.exe ORACLE_HOME_NAME="ARAXI_11" -silent -nowelcome -force -nowait -noconsole -loglevel fine -noconfig -ignoreSysPrereqs use_prereq_checker=false -responseFile C:\Oracle\11.2.0\installation\scripts\SVRCUSTOM11.2.0.rsp
The problem is that when the command is invoked from command line (cmd), the installation is successful.
However, when the same command is invoked from under the InstallShield, the installation fails on Architecture requirement check:
INFO: *********************************************
INFO: Architecture: This is a prerequisite condition to test whether the system has a certified architecture.
INFO: Severity:CRITICAL
INFO: OverallStatus:OPERATION_FAILED
INFO: All forked task are completed at state performChecks
INFO: Completed background operations
INFO: Moved to state <performChecks>
INFO: Waiting for completion of background operations
INFO: Completed background operations
INFO: Validating state <performChecks>
INFO: Using default Validator configured in the Action class oracle.install.ivw.db.action.PrereqAction
INFO: Adding ExitStatus PREREQUISITES_NOT_MET to the exit status set
SEVERE: [FATAL] [INS-13013] Target environment do not meet some mandatory requirements.
CAUSE: Some of the mandatory prerequisites are not met. See logs for details. C:\Oracle\Inventory\logs\installActions2011-05-19_12-58-13PM.log
ACTION: Identify the list of failed prerequisite checks from the log: C:\Oracle\Inventory\logs\installActions2011-05-19_12-58-13PM.log. Then either from the log file or from installation manual find the appropriate configuration to meet the prerequisites and fix it manually.
INFO: Advice is ABORT
INFO: Adding ExitStatus INVALID_USER_INPUT to the exit status set
The questions:
1. Why the requirement checks give different results when installation is invoked from CMD and from InstallShield?
2. Why the requirement checks are done despite the parameters "-ignoreSysPrereqs" and "use_prereq_checker=false"?
3. What should I do to get the installation pass (either remove the check or make it satisfying)?
PS. The 32 bit Oracle Server installation on Windows 2003 works without problem when invoked from InstallShield.

Answer 1

Please use 2008R2 if you want to install 11gR2 versionThank you for that update. Possibly it will help me to solve another trouble.
Regarding the problem I described, the issue is that I install Oracle Client 32 bit prior to trying to install Oracle Servier 64 bit.
The Oracle Client setup had started RemoteExecService.exe 32 bit process. And the process remained running after the installation completed.
The Oracle Server setup utilizes the running RemoteExecService.exe process. Since the process is 32 bit, the architecture requirement check had failed.
I've added to my script killing the process
taskkill /F /IM RemoteExecService.exe
before invoking the Oracle Server installation.
That way the Oracle Server setup starts another RemoteExecService.exe process and the new process is 64 bit.
The architecture requirement succeed.