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3747193 - Error during MAIN_NEWBAS/STARTSAP_NBAS due to RFC Login with SNC failed

Symptom

  • Error during preprocessing at phase MAIN_NEWBAS/STARTSAP_NBAS

        Error: ABAP instance '<instance_NO.>' on host '<servername>' is still down!

  • Check STARTSAP.LOG, it recorded RFC login with SNC failed

    1 ETQ359 RFC Login to: System="SID", AsHost="<servername>" Nr="<instance_NO.>", Client="000", User="DDIC", GwHost="<servername>", GwService="sapgw<instance_NO.>"
    1 ETQ363 RFC Login with SNC: SSO="0", QOP="9", MYNAME="xxx", PARTNERNAME="xxx"
    1 ETQ364 RFC Login with SNC: SECUDIR="/usr/sap/SID/DVEBMGS<instance_NO.>/sec" SNCLIB="/upgrade/SUM/abap/bin/libgssapi_krb5.so.2.2"
    2WETQ231 RFC Login failed
    1 ETQ399 SAPCONTROL MANAGER: Get process list of instance '<instance_NO.>' on host '<servername>'
    3 ETQ120 20260515073044: PID 15409 execute '/usr/sap/SID/DVEBMGS<instance_NO.>/exe/sapcontrol -format script -prot NI_HTTP -nr <instance_NO.> -function GetProcessList', output written to '/upgrade/SUM/abap/log/SAPup.ECO'.
    3WETQ122 20260515073045: PID 15409 exited with status 3 '' (time:     1.0/    0.2/    0.1/642MB real/usr/sys/maxmem)
    1 ETQ399 Action 'START' failed for '<servername>/<instance_NO.>' ('Error: ABAP instance '<instance_NO.>' on host '<servername>' is still down!').
    1 ETQ399 SAPCONTROL MANAGER: Get process list of instance '<instance_NO.>' on host '<servername>'
    3 ETQ120 20260515073045: PID 15411 execute '/usr/sap/SID/DVEBMGS<instance_NO.>/exe/sapcontrol -format script -prot NI_HTTP -nr <instance_NO.> -function GetProcessList', output written to '/upgrade/SUM/abap/log/SAPup.ECO'.
    3WETQ122 20260515073045: PID 15411 exited with status 3 '' (time:     0.0/    0.2/    0.2/642MB real/usr/sys/maxmem)
    1EETQ399 Error: ABAP instance '<instance_NO.>' on host '<servername>' is still down!
    2EETQ354 Starting system failed, rc="-1"


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Environment

  • ABAP upgrade tools
  • Software Update Manager (SUM)

Keywords

MAIN_NEWBAS/STARTSAP_NBAS,RFC Login with SNC, RFC login failure, DDIC user, SAP_UPGRADE_SHADOW_SYSTEM, SNC configuration, SSO, RFC connection error, SNC, SNC_ENABLED, snc/accept_insecure_rfc , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem

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