Re: What are the major difference between Oracle RAC and Parallel server?
Sorry for the late reply, but the major differences are: 0) Cache fusion extended to write-write (8i OPS had read-write) 1) Locking mechanisms are self-tuning (Dynamic resource mastering - Use the defaults!) 2) Major re-write of a *lot* of the internals 3) No more DLM - its now GCS GES (separate lock enqueque services) 4) Oracle is pushing it like they never pushed OPS - much better marketing! 5) Oracle Parallel FailSafe (OPFS) has been enhanced and renamed to Real Application Clusters Guard 6) Lock mastering is now Resource mastering 7) Lock database replaced by Global Resource Directory 8) There are now five (!) RAC manuals instead of 8i OPS's two 9) Most of the v$ and GV$ views have changed and many of the names are different ...ad infinitum... The RAC concepts manual reveals a lot, especially the What's New in Oracle Cluster Software section: http://download-west.oracle.com/otndoc/oracle9i/901_doc/rac.901/a89867/whats new.htm#983402 The Real Application Clusters Deployment and Performance manual was written by someone who actually knows the stuff. Some of the detailed descriptions in the SQL Statement Execution in Real Application Clusters section of the RAC Deployment and Performance manual are quite revealing as to how cache fusion actually works. I can't say I completely agree with ALL the installation recommendations, but I understand why they make them (K.I.S.S. principle). IMHO, the best starting point for the 9i docs is: http://download-west.oracle.com/otndoc/oracle9i/901_doc/nav/docindex.htm In the end, RAC is the next step in the evolution of OPS, but perhaps the magnitude of the delta does justify a name change (e.g. humanoid - human). [Note that this is a slight divergence from my previous position. Consistency is the virtue of the small mind. - Confucius]. However, I still think that the main motivation for the name change was to avoid the all-too-frequent garlic necklace and raised cross reaction to any suggestion of using Oracle Parallel Server. -Don Granaman [OraSaurus] - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Monday, February 11, 2002 2:58 PM server? ORACLE 9i claim it support ORACLE RAC (real application Cluster). After I saw couple of Oracle RAC papers, I still confuse between Oracle RAC and Parallel server. Can someone give me ideal what are the major difference ORACLE RAC and Parallel server? Thanks. _ Join the world's largest e-mail service with MSN Hotmail. http://www.hotmail.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: dist cash INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Don Granaman INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: What are the major difference between Oracle RAC and Parallel server?
Think of RAC as OPS v2, or probably more precisely, Cache Fusion v2. Older versions of OPS used to require carefully partitioning of a anticipated application across the nodes. In 8.1, this was lessened to some extent and even more so in 9. Thus in 9i, the claim is that you can run a standard application under this new OPS without needing to worry about the partitioning issues. Thus you can run a (R)eal (A)pplication under the (C)luster hth connor --- dist cash [EMAIL PROTECTED] wrote: ORACLE 9i claim it support ORACLE RAC (real application Cluster). After I saw couple of Oracle RAC papers, I still confuse between Oracle RAC and Parallel server. Can someone give me ideal what are the major difference ORACLE RAC and Parallel server? Thanks. _ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: dist cash INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). = Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) Some days you're the pigeon, some days you're the statue __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: What are the major difference between Oracle RAC and Parallel server?
It is not completely true what others have said, that RAC is the same as OPS. RAC obviously builds on OPS, but there are quite a lot of enhancements to improve the cache coherency issues, and it is also expected that 9iR2 brings even more. Thanks, Bjørn. dist cash wrote: ORACLE 9i claim it support ORACLE RAC (real application Cluster). After I saw couple of Oracle RAC papers, I still confuse between Oracle RAC and Parallel server. Can someone give me ideal what are the major difference ORACLE RAC and Parallel server? Thanks. _ Join the world's largest e-mail service with MSN Hotmail. http://www.hotmail.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?ISO-8859-1?Q?Bj=F8rn?= Engsig INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
