db Tier VS db Techstack

when we gave db techstack we have to recreate control file and recover the database...and open.
but in the case of dbtier,it will create control file and opens the datbase db..no need to recover the db as it was cold backup option.

adcfgclone.pl stages

appldev@pind31(DEV_806_BALANCE/CCM:Admin):$ perl adcfgclone.pl
USAGE:
adcfgclone.pl [context file]
WHERE:
: { appsTier | appltop | atTechStack }
: { dbTier | database | dbTechStack }
Depending on the context type.
NOTE:
if no context is specified, adcfgclone.pl will
prompt for cloned system target values to create
the new context file


1. perl adcfgclone.pl atTechStack

Only run cloning procedure on TechStack: that is 8.0.6 and iAS Oracle Home under $ORA_TOP.

2. perl adcfgclone.pl appltop

Only run cloning procedure on $APPL_TOP and $COMMON_TOP.

3. perl adcfgclone.pl appsTier

For all apps tier: $APPL_TOP, $COMMON_TOP and $ORA_TOP.

4. perl adcfglone.pl dbTechStack

Only run cloning procedure on RDBMS: database Oracle Home.

5. perl adcfgclone.pl database

Create control file, start database etc.

6. perl adcfgclone.pl dbTier

For all database tier procedures.