Hi Somraj,
i) for SAPCAR , you can copy it from other environment (SAP) , make sure os is same .
ii) you can keep fix pack installation path seperate and create a new one also . as you mentioned in your post if db2level shows you path "/ABC/DEF/HIJ' , then
cd <Software path down load>
./installFixPack -b /ABC/DEF/HIJ this will work .
otherwise if you want to create seperate directory like KLM then you have to go as below
cd <Software path down load>
# Syntax: db2_install -b <install-path> -p <product>
in my case it was
# As root
cd /tmp_backupehp/kfbw731/DB297FP5/AIX/51042672_1/DB2_LUW_9.7_FP5SAP_RDBMS_AIX_HP_SOL_/AIX_64/ESE/disk1
./db2_install -p ese -b /db2/db2<sid>/db2_software/v9.7/
and then run db2 iupdt
in my case
cd /db2/db2<sid>/db2_software/v9.7/instance
./db2iupdt db2<sid>
let me know if you still have any concerns .
THanks
Manas Behra