Due to the amount of engineering effort required to migrate both database systems, OmniTI decided to only migrate the Oracle-Perl data warehouse to PostgreSQL and keep the OLTP system running Oracle 8i.

"Because Oracle licensing would no longer be needed for the data warehouse, OmniTI moved those Oracle 8i licences to the OLTP, mitigating the costs of scaling the Oracle installation for the OLTP," according to the report.

Sun also took the opportunity to berate Linux by reporting OmniTI initially ran the new PostgreSQL application on 64-bit Linux, but the customer suffered "unacceptable downtime and eventually catastrophic data losses in that environment".

"OmniTI attributes these outages to a number of specific issues associated with the Linux operating system, such as frequent kernel-panic errors, file systems remounting as read-only, and the lack of reliable support for file system snapshots," according to Sun. "After suffering 20 outages in four months on Linux, OmniTI switched to Solaris 10. Since then, the operating environment has been significantly more reliable and stable."

This was confirmed by OmniTI principal and CTO Theo Schlossnagle on his .