Centos – DB2 LUW 11.5.9 dbprereqcheck: 'The db2prereqcheck utility failed to find the following package or file: ""'
I am trying to upgrade my DB-2 LUW 11.5.6 community edition (free license) installation, originally created on a CentOS 7 Linux x86_64 host, to the latest 11.5.9 version. The instructions say to cd to the 'server_dec' directory unpacked from the…