Upgrade Still Running,Logon not possible

Symptom:

When trying to login to shadow instance with user other than DDIC , message shown as  "Upgrade Still Running,Logon Not Possible"

Solution :

1. To unlock the SAP system, enter the following commands. 

The system may be either the original SAP system or the shadow system, depending on which one the error occurred.

Original SAP system

cd /<update directory>/abap/bin

./SAPup unlocksys

Shadow system

cd /<update directory>/abap/bin

SAPup unlockshd

2. To lock the original SAP system or shadow system again, enter the following commands:

Original SAP system

cd /<update directory>/abap/bin

./SAPup locksys

Shadow system

cd /<update directory>/abap/bin

SAPup lockshd

Refer Note : 1901463 - How to unlock the SAP system to perform correction(s) during an upgrade

Still if the issue is not solved , perform the following steps :

E:\>tp unlocksys GEP pf=E:\Upgrade\SUM\abap\var\DEFAULT.TPP

Wait for approximately 5 mins and then execute below also:

E:\>E:\Upgrade\SUM\abap\bin\SAPup unlockshd GEP

Wait for another 5 minutes and try logging in to the system.

Hope this helps!!!

Abraham