Is there an advantage for me to run 64-bit Oracle on a Solaris box with 16 GB of RAM? What are the disadvantages?...
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
(Patching I am aware of.)
The decision to use 64-bit architecture:
Before moving to a 64-bit architecture, the Oracle customer should perform a thorough needs analysis. Here are some issues to consider before moving to a 64-bit architecture:
64-bit computing may not be required everywhere in an environment. For example, in a three-tier architecture, the back-end database server may be 64-bit, but application servers and clients can remain 32-bit. Applications that do not require 64-bit features should remain 32-bit applications.
Scalability on 64-bit machines does not plateau as quickly as 32-bit systems. 64-bit machines are therefore an ideal choice for applications that require a large amount of computing power or expect significant future growth and need the scalability of 64-bit addressability. 32-bit databases run on systems with a small number of 32-bit CPUs (4-6) may see some degradation in performance if moved to 64-bit systems also with a small number of 64-bit CPUs.
Applications will achieve the benefits of improved scalability on-64 bit machine only if they are memory intensive. 64-bit applications have bigger data structures because memory has to be addressed with a larger number of bits. Larger data structures translate into addtional memory requirements per process. 64-bit systems work more effectively when running with a large number of CPUs.
Oracle produces both 32-bit and 64-bit versions of the Oracle database for HP-UX 11.x. The 32 and 64-bit versions are built from identical Oracle code. The only difference is the compile and link time flags. Therefore all features found in a particular version of Oracle are present in both the 32-bit and 64-bit versions.
The 64-bit version of the Oracle binary supports network connections from both 64-bit and 32-bit clients.
Running 32-bit binaries on a 64-bit system:
When running 32-bit Oracle binaries on a 64-bit machine, you will have to set SHMMAX to 1 GB exactly. This is an important requirement when you want to extend the SGA beyond the 1 GB.
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.