Differences between the primary server(s) and the standby server(s) are always supported as long as the Oracle software installed on all servers is of the same Oracle Platform as defined above, is certified to run on each server, and is the same Oracle Database Release and Patch Set. Examples of such differences that are supported include the following: Hardware manufacturer (e.g. Dell and Sun or Hitachi and EMC) Hardware configuration (e.g. number of CPUs, amount of RAM, storage configuration, etc) Processor (e.g. x86-64 AMD64 and x86-64 Intel 64; POWER4 and POWER5) Operating system distribution (e.g. Red Hat Linux, SUSE Linux or Oracle Enterprise Linux) Operating system version (e.g. Windows 2000 and Windows XP) 2. If Platform ID's for your primary and standby are different, check the table below to see if you have a supported configuration for Data Guard Redo Apply (Physical Standby) In addition to general support when using the same Oracle platform, Data Guard Redo Apply (physical standby) can support specific mixed Oracle Platform combinations. Oracle Platform IDs, platform names, and which combinations of platform ID(s) that can be combined to form a supported Data Guard configuration using Redo Apply are listed in the table below. Platform combinations not listed in the table below are not supported using Data Guard Redo Apply.
Then, I referenced in one of the documents to him:
Oracle requires the same hardware architecture on Primary and all Standby sites. It also requires the same patchset on both Primary and Standby.
Finally, his response:
"As of Oracle Database 11g, Data Guard provides increased flexibility for Data Guard configurations" " in which the primary and standby systems may have different CPU architectures, operating systems" " (for example, Windows & Linux), operating system binaries (32-bit/64-bit), or Oracle database binaries (32-bit/64-bit)." "This increased mixed-platform flexibility is subject to the current restrictions documented in the " " My Oracle Support notes 413484.1 and 1085687.1 at http://support.oracle.com."
I really have to question his accuracy and/or ability to understand Oracle's matrix.
According to our certification matrix - Data Guard Support for Heterogeneous Primary and Physical Standbys in Same Data Guard Configuration (Doc ID 413484.1) HP hardware and linux OS are not supported