Oracle 11g R2 on HP and Solaris

Question

Hello All,
In the Last Week i was installing Oracle 11R2 on two HP servers and one Solaris server. i faced common issues on the three servers and i posted threads about some of these issues.
But i want to summarize it so i know the solution of each one in order not to face it again.
Below is the info
I have 3 servers, two of them are HP where Oracle 10g is installed and one Solaris server where i am doing the Oracle installation for the first time.
On the 3 servers and when i was installing Oracle 11g R2 the installation failed at the end when it was trying to create the db with this error: the file Seed_Database.dfb containing the datafiles information is missing.
knowing that i download it Oracle 11g R2 from the Oracle website for the three server. Why this file is always missed ? and even now and after i created a custom database manually (Not during the installation) i can't create a "general purpose db" through dbca because it needs this template file.
while creating the database on the 3 servers and on step 4 of 12 of the tab related to OEM is disabled. and the emctl is not automatically configured after the creation of the db. why this tab is always disabled on step 4 of 12?
Regards.

Answer 1

schavali wrote:
On the download pages (such as http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-sparc64soft-088481.html) you will see cksums listed - you need to verify cksums to ensure that your download is not corrupted.
http://en.wikipedia.org/wiki/Cksum
HTH
SriniI would think if the download were corrupted, as evidenced by a mis-match in the checksum, he probably never could have unzipped it, much less actually ran an install that simply didn't create some of the stuff he wanted.
;-)