Cloning A Production Server

Question

Hello All,
I have the following scenario.
mySAP 2004(ECC 5.0) on AIX and Oracle 9.2.6.0
<u>Current DB Size is around 150 GB.</u>
<b>SID: PP1, IP: 192.168.1.13</b>
My requirement is to copy this same environment onto another sever (Create a DR instance) with the following options.
mySAP 2004(ECC 5.0) on AIX and Oracle 9.2.6.0
<i><b>SID: PD1, IP: 192.168.1.14</b></i>
I am aware of the fact that i have the following options with me.
1. The SID has to be different (Since both the old server and the new server will co-exist)
2. There will be a change of IP.
3. Points 1 and 2 necessitate a fresh install on the NEW server.
4. The options for "cloning the system"  are
    a. Homogeneous System Copy
    b. Client Export and Import.
I now ask,
1. What is the best possible option for me to perform the "cloning" in the shortest possible time and the method, if possible.
2. What is the downtime i should expect based on the DB size (150 GB).
3. Any other method ?
I would be very grateful for any resolutions that are provided and would reward the same.
Thanks and Regards,
Subodh

Answer 1

Hi Guyz, I think Subhodh is looking for cloning the database for systemcopy and client copies not for DR(disaster recovery) if it is for DR recovery then it has to be exactly same as production. If you are looking to clone the database for test with different SID then here is the simple way:
(only database part)
1.take full offline backup of source system(PD1 in your case)
2.just before or after backup take control file back to trace
( SQL>alter database backup controlfile to trace)
3.restore the database&redologs onto the target system with relavant file systems
e.g: if your source datafile paths are /oracle/PD1/sapdata1/....
       then on target system it will be like /oracle/TRG/sapdata1...
4.ftp or copy the traced control file from location usertrace .trc file will be created
   with time stamp when you run the above command.
5.after you copied trace file on target system name it as cr_db.sql and edit the file
6. when you open the cr_db.sql you will see the two parts of control file when you have online redologs and when you dont have online redologs , remove part two.
7.edit first part from startup nomount and in place of reuse reaplce set, in place of
PD1 replace TRG. keep the script until characterset and delete every thing there after.
8.copy your spfile<SID<.ora OR init<SID>.ora file from source to target
9.after you installed oracle( or copied bineries from source) at SQL prompt
10.SQL>startup nomout
11.run the script cr_db.sql SQL>@<path>/cr_db.sql
12.now your database is at mount stage
13.SQL>alter database open resetlogs
14.create temp tablespace
15.ALL DONE your database is cloned.... now follow other steps from homogenous system copy manual from market place.
Regards
Manohar