2725568 - Error: The command 'disp+work' from tool 'disp+work' could not be executed

• Severe error(s) occurred in phase MOD_SELROADMAP/TOOLVERSXML_KERNELPARAMS_ROADMAP!

Last error code set:
Error: The command 'disp+work' from tool 'disp+work' could not be executed successfully

• In TOOLVERS.LOG, you would see more information as below:

1 ETQ201 Entering upgrade-phase "MOD_SELROADMAP/TOOLVERSXML_KERNELPARAMS_ROADMAP" ("20181127080634")
4 ETQ380 computing toolpath for request "TP_DEFAULT"
4WETQ399 Cannot find 'tp' in current path!
2 ETQ367 Connect variables are set for standard instance access
4 ETQ399 System-nr = '', GwService = 'sapgw' Client = '000'
1 ETQ200 Executing actual phase 'MOD_SELROADMAP/TOOLVERSXML_KERNELPARAMS_ROADMAP'.
1 ETQ399 Phase arguments:
2 ETQ399 Arg[ToolVersXML] = 'ToolVers.xml'
2 ETQ399 Arg[TypesList]   = 'CUR'
2 ETQ399 Arg[ToolFilter]  = 'disp+work'
2 ETQ399 Arg[Options]     = 'SETKERNELPARAMS'
1 ETQ399 Using a tool filter disp+work...
1 ETQ399 Determining some tool versions from current path...
1 ETQ399 Executing the command 'disp+work' for the 'non-ignorable' tool 'disp+work' in cur-path '(null)'
1 ETQ399 Output of 'disp+work' to be found in 'disp+work_cur.out'
1EETQ399 Error: Non-ignorable executable 'disp+work' in dir '<current tool path>' does not exist - missing!
1EETQ399 Last error code set is: Error: The command 'disp+work' from tool 'disp+work' could not be executed
1EETQ399Xsuccessfully
1EETQ204 Upgrade phase "TOOLVERSXML_KERNELPARAMS_ROADMAP" aborted with severe errors ("20181127080634")

(Command "disp+work -v" works fine when executed with <SID>adm user.)

• In ENVDUMP.LOG, the loaded PATH environment is not containing appropriate Information.

HOME=/home/<SID>adm
LD_LIBRARY_PATH=
LOGNAME=<SID>adm
PATH=/bin:/usr/bin
PWD=/nmb/usr/sap/<SID>/SUM/abap
SHELL=/bin/csh
SHLVL=0
USER=<SID>adm
SAPSYSTEMNAME=<SID>

• When testing by running follow command with root user, the following error occurred.

/usr/sap/hostctrl/exe/saphostexec -userenv <SID>adm

check Environement for user <SID>adm (su vs. shell based):
[Child] Executing '/bin/su - <SID>adm -c echo SAPHOSTAGENT-START;env;echo SAPHOSTAGENT-END
Loading environement via su ... DONE

[Thr 139816412972864] Wed Nov 28 00:58:12 2018
[Thr 139816412972864] *** ERROR => Failed to execute /usr/sap/hostctrl/exe/sapuxusergetrtinfo
 (2: No such file or directory)
[OsUtilux.cpp 2888]
Loading environement via login shell ... FAILED
 

• SUM 2.0
• Linux

disp+work, PATH, MOD_SELROADMAP, TOOLVERSXML_KERNELPARAMS_ROADMAP, SUM, sapuxusergetrtinfo , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem