Answer Posted / accenture

it will be very difficult to explain the whole process as
this very long and big matter to explain.
but i can help few on this

for example we have 2 syatems DEV & PRD
when we release a change request from DEV from sap level in
behind the screen sap call the os level tool tp who make the
complete transport process.
tp calls some other subtools like r3trans to make the export
process. at the same time tp program writes some file to tmp
& cofile directory, R3trans reads those files and try to
make export the change request from the source system
database to the source system database to the operationg
system ( usr/sap/Trans - which is a sharing dir ). after
finishing work he left some file in the tem directory and
inform tp. tp collect those informationand sent this to sap.

the data of change request will be in sap/trans/data dir.
the transport information file will be in sap/trans/cofile.
the complete log information will be in sap/trans/log dir
which contains SLOG,ALOG AND ULOG with some files like
SIDE9****** And some other files.

note this - the data which will be in data dir will be in
r3trans format. this helps us to make transport database
independent.

same as export/release process in import phase also r3trans
do the same work to make import.

some others programs, tools and tableS also take part in
this process like RDDIMPDP.TRBAT.TRJOB.

THIS IS VERY DIFICULT TO EXPALAIN WITH A SHORT TEXT SO
PLEASE GO FOR COMPLETE TRANSPORT DOCUMENTS -

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