3.5.4Storage of PasswordsDuring the update, you have to enter
passwords for the users ADM and DDIC. These passwords are stored in
the memory fe M!MSA"up.dat in su#dire$tory mem of the a#ap
su#dire$tory of the update dire$tory.Athough the passwords are
en$rypted, you have to deny the a$$ess to the mem su#dire$tory for
other operating system users. %ny the user ADM needs a$$ess to this
su#dire$tory. In addition, you shoud not share this su#dire$tory in
the networ&.If you save the update dire$tory for ater anaysis
after the update has fnished, deete the fe M!MSA"up.dat from the
mem su#dire$tory.'a$& to (ui$& )uide *page +,-3.6Technical
Details of the UpdateProcedure .oteThis se$tion is reevant if you
perform an enhan$ement pa$&age instaation or S"S update.The
Software /pdate Manager updates your system using a system $oning
and swit$h pro$edure. This pro$edure instas a $opy of the system,
the shadow system, in parae with the origina system. The shadow
system is used to update the a0e$ted software $omponents and to
insta the additiona $omponents, whie the origina system is sti in
produ$tion operation.%perating two instan$es in parae pa$es
in$reased demands on free spa$e in the fe system, in the data#ase,
and on the system resour$es. .o pre$ise guideines $an #e given for
the duration of the update pro$edure. The duration of the system
$oning depends to a great e1tent on the amount of data, the
data#ase system, and the hardware and $an ta&e severa hours.
Athough the system $an sti #e used in produ$tion operation, you
have to ta&e into a$$ount a possi#e performan$e de$rease during
this $oning pro$ess. If ne$essary, some parameters in the
produ$tion system might need to #e ad2usted to ena#e you to operate
the produ$tion and the shadow systems in parae.The foowing fgure
shows the pro$ess 3ow of the update pro$edure with the ma2or steps
of the pro$edure.40C/ST%M!45 Copyright 67+8 SA" A).A rights
reserved./pdate of SA" Systems /sing Software /pdate Manager +.7
S"++Planning9:oe;vs< =2>?@ABC< "ro$ess Dow of an /pdate
"ro$edure /sing the System Swit$h "ro$edureThe $ompete update
pro$edure is divided into roadmap steps. In these roadmap steps,
the foowing a$tions ta&e pa$eEFWelcomeThe Software /pdate
Manager anayGes whether your SA" system is a duaHsta$& system
or an A'A" or Iava standaone system. A$$ording to the resut, the
)/I is assem#ed. Jou aways see the Monitor ta# page, and either the
ABAP or Java ta# page or #oth.FSpecify CredentialsIn the Specify
Credentials roadmap step, you enter the password for the ADM
user.FSelect TargetIn the Select Target roadmap step, you enter the
o$ation of the downoad dire$tory and the sta$& $onfguration
fe.FConfrm TargetIn the Confrm Target roadmap step, you enter the
&eyword for the update.FExecute ProcessThe Execute Process
roadmap step automati$ay triggers the ne1t stage of the update
pro$ess. This roadmap step is #ro&en down into the foowing
roadmap stepsEK!nitiali"ationThe update )/I is assem#ed. Jou aways
see the Monitor ta# page. A$$ording to the resut of the previous
roadmap steps, you aso see either the ABAP or Java ta# page or
#oth.KExtractionThe Software /pdate Manager e1tra$ts the reLuired
software.KConfgurationIn the Confguration roadmap step, you enter a
the information reLuired for the update pro$edure. This in$udes the
passwords, the pre$onfguration mode, information a#out $omponents,
a#out addHons and Support "a$&ages that you want to in$ude as
we as information a#out the shadow system.KC#ec$sThe Software
/pdate Manager $he$&s if your system fufs the reLuirements for
the update pro$edure Mfor e1ampe, whether the reLuired free spa$e
is avaia#eN.KPreprocessingIn this roadmap step, the Software /pdate
Manager $reates the shadow system. This shadow system is then used
for various update a$tivities whie you $an sti use the origina
system in produ$tion operation. The Software /pdate Manager #uids
up the shadow system #y $oning parts of the origina system. A ta#es
of the SA" .etOeaver Appi$ation Server are needed as shadow ta#es
to operate the shadow system. The shadow system is used to perform
the modif$ation ad2ustment of the A'A" Di$tionary o#2e$ts /pdate of
SA" Systems /sing Software /pdate Manager +.7 S"++PlanningC/ST%M!45
Copyright 67+8 SA" A).A rights reserved.41and
