8.5P4 linux webtier shows online-reinstall required
Originally Published: 2021-07-02
Last Modified: 2023-10-06
Article Number
000045492
Applies To
All RHEL Operating systems
Issue
8.5P4 linux webtier shows online-reinstall required, Log shows. 
     [exec] Exception occured :	fuser could not be located: 
     [exec] Log file location: /rsa/RSAAuthenticationManagerWebtier/appserver/wls/cfgtoollogs/opatch/opatch2021-06-10_14-34-08PM_1.log
     [exec] UtilSession failed: Prerequisite check "CheckActiveFilesAndExecutables" failed.
     [exec] OPatch failed with error code 73
Cause
Opatch failure with error code 73.
Resolution
These linux machines are missing the fuser command, In order to validate the same run the below command using root,
[root@RHEL7 bin]# find / -name fuser
On the defective machine, there will be no results while on other machines that got the fuser installed the result will be as below,
User-added image

Hence in order to solve the issue copy this file from any linux machine then import it to the defective machine under the same path and with the same permissions, And then run the webtier installation again.
 

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