During the update, you have to enter passwords for the users <SID>adm and DDIC. These passwords are stored in the memory file MEMSAPup.dat. The file is located in subdirectory abap/mem of the SUM Directory.

Although the passwords are encrypted, you have to deny the access to the mem subdirectory for other operating system users. Only the user <SID>adm needs access to this subdirectory. In addition, you should not share this subdirectory in the network.

If you save the SUM directory for later analysis after the update has finished, delete the file MEMSAPup.dat.