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Page 1 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Sachin's RAC Blog
July 7, 2010
New features in Oracle 9i/10g/11g RAC
Oracle Real Application Clusters New features
Oracle 9i RAC OPS (Oracle Parallel Server) was renamed as RAC CFS (Cluster File System) was supported OCFS (Oracle Cluster File System) for Linux and Windows watchdog timer replaced by hangcheck timer
Oracle 10g R1 RAC Cluster Manager replaced by CRS ASM introduced Concept of Services expanded ocrcheck introduced ocrdump introduced AWR was instance specific
Oracle 10g R2 RAC CRS was renamed as Clusterware asmcmd introduced CLUVFY introduced OCR and Voting disks can be mirrored Can use FAN/FCF with TAF for OCI and ODP.NET
Oracle 11g R1 RAC Oracle 11g RAC parallel upgrades - Oracle 11g have rolling upgrade features whereby RAC database can be
upgraded without any downtime. Hot patching - Zero downtime patch application. Oracle RAC load balancing advisor - Starting from 10g R2 we have RAC load balancing advisor utility. 11g RAC
load balancing advisor is only available with clients who use .NET, ODBC, or the Oracle Call Interface (OCI). ADDM for RAC - Oracle has incorporated RAC into the automatic database diagnostic monitor, for cross
advisories. The script addmrpt.sql run give report for single instance, will not report all instances in RAC, this is known as instance ADDM. But using the new package DBMS_ADDM, we can generate report for all instances of RAC, this known as database ADDM.
Optimized RAC cache fusion protocols - moves on from the general cache fusion protocols in 10g to deal withspecific scenarios where the protocols could be further optimized.
Oracle 11g RAC Grid provisioning - The Oracle grid control provisioning pack allows us to "blow-out" a RAC node without the time-consuming install, using a pre-installed "footprint".
Oracle 11g R2 RAC We can store everything on the ASM. We can store OCR & voting files also on the ASM. ASMCA Single Client Access Name (SCAN) - eliminates the need to change tns entry when nodes are added to or
removed from the Cluster. RAC instances register to SCAN listeners as remote listeners. SCAN is fully qualified name. Oracle recommends assigning 3 addresses to SCAN, which create three SCAN listeners.
Clusterware components: crfmond, crflogd, GIPCD. AWR is consolidated for the database. 11g Release 2 Real Application Cluster (RAC) has server pooling technologies so its easier to provision and
manage database grids. This update is geared toward dynamically adjusting servers as corporations manage
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Page 2 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
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the ebb and flow between data requirements for datawarehousing and applications. By default, LOAD_BALANCE is ON. GSD (Global Service Deamon), gsdctl introduced. GPnP profile. Cluster information in an XML profile. Oracle RAC OneNode is a new option that makes it easier to consolidate databases that arent mission critical,
but need redundancy. raconeinit - to convert database to RacOneNode. raconefix - to fix RacOneNode database in case of failure. racone2rac - to convert RacOneNode back to RAC. Oracle Restart - the feature of Oracle Grid Infrastructure's High Availability Services (HAS) to manage
associated listeners, ASM instances and Oracle instances. Oracle Omotion - Oracle 11g release2 RAC introduces new feature called Oracle Omotion, an online migration
utility. This Omotion utility will relocate the instance from one node to another, whenever instance failure happens.
Omotion utility uses Database Area Network (DAN) to move Oracle instances. Database Area Network (DAN)technology helps seamless database relocation without losing transactions.
Cluster Time Synchronization Service (CTSS) is a new feature in Oracle 11g R2 RAC, which is used to synchronize time across the nodes of the cluster. CTSS will be replacement of NTP protocol.
Grid Naming Service (GNS) is a new service introduced in Oracle RAC 11g R2. With GNS, Oracle Clusterware (CRS) can manage Dynamic Host Configuration Protocol (DHCP) and DNS services for the dynamic node registration and configuration.
Cluster interconnect: Used for data blocks, locks, messages, and SCN numbers. Oracle Local Registry (OLR) - From Oracle 11gR2 "Oracle Local Registry (OLR)" something new as part of
Oracle Clusterware. OLR is nodes local repository, similar to OCR (but local) and is managed by OHASD. It pertains data of local node only and is not shared among other nodes.
Multicasting is introduced in 11gR2 for private interconnect traffic. I/O fencing prevents updates by failed instances, and detecting failure and preventing split brain in cluster.
When a cluster node fails, the failed node needs to be fenced off from all the shared disk devices or diskgroups. This methodology is called I/O Fencing, sometimes called Disk Fencing or failure fencing.
Re-bootless node fencing (restart) - instead of fast re-booting the node, a graceful shutdown of the stackattempted.
Clusterware log directories: acfs* HAIP (IC VIP). Redundant interconnects: NIC bonding, HAIP. RAC background processes: DBRM Database Resource Manager, PING Response time agent. Virtual Oracle 11g RAC cluster - Oracle 11g RAC supports virtualization.
Source: Internet
Related Articles: cluvfy commands RAC crsctl commands RAC srvctl commands RAC New features in Oracle Clusterware 12c
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17 comments:
Anonymous July 14, 2011 at 11:25 AM
Hi ,
very nice >>>>>>>>>Please help me >>>>>>>
Can you give me doc for 11GR1 & 11GR2 RAC installation on LINUX and WINDOW .
Alok
Reply
Anonymous December 5, 2011 at 1:52 PM
are there any advantages in 10g rac over 11g rac ?
Reply
Satya December 6, 2011 at 5:23 PM
Hi,
dd commandsdd --dataset definition, useful for taking backup of votedisks/Voting DisksArguments: if -- input file of -- output file bs --block sizedd...Continue >>
o2cb commandsOracle RAC O2CB Cluster Service Commands/etc/init.d/o2cb start/etc/init.d/o2cb start ocfs2/etc/init.d/o2cb stop/etc/init.d/o2cb stop ocfs2/etc/init.d/o2cb restart/etc/init.d/o2cb restart...Continue >>
Oracle RAC Interview Questions/FAQs Part341. What is HAS (High Availability Service) and the commands?Ans:HAS includes ASM & database instance and listeners.crsctlcheck hascrsctl config hascrsctl disable hascrsctl enable hascrsctl...Continue >>
Oracle RAC Interview Questions/FAQs Part2Oracle RAC Interview Questions/FAQs Part221. Who will take backup of OCR files?Ans:crsd will take backup.22. What is split brain syndrome?Ans:Will arise when two or more instances attempt to control...Continue >>
Oracle RAC Interview Questions/FAQs Part1Oracle RAC Interview Questions/FAQs Part11. What is the use of RAC?2. What are the prerequisites for RAC setup?3. What are Oracle Clusterware/Daemon processes and what they do?Ans:ocssd, crsd, evmd,...Continue >>
New features in Oracle Clusterware 12cHere are the new features in Oracle 12c RAC/Clusterware.1. Oracle Flex ASM - This feature of Oracle Clusterware 12c claims to reduce per-node overhead of using ASM instance. Now the instances can use...Continue >>
Background processes in RAC clscfg commands in RAC cluvfy commands in RAC crs_profile crs_register
crs_unregister crs_setperm crs_getperm crs_start crs_stopcrs_relocate commands in RAC
crs_stat commands in RAC
crsctl commands in RAC dd commands diagcollection.pl commands in
RAC gsdctl commands in RAC
init parameters in RAC O2CB commands ocrcheck commands in RAC ocrconfig commands in RAC
ocrdump commands in RAC oifcfg commands in RAC olsnodes commands in RAC onsctl commands in RAC
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Page 3 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Above article has all the new features (I will treat them as advantages) of RAC 11g.
e.g.: We can store everything on the ASM.
Reply
Anonymous May 25, 2012 at 1:20 PM
Hi Sathya,
Really !!!!!!!!!!!!!! your blog is good,
Please send me if you have any material regarding performance tunning of oracle database (P.T). Also if possible please send me the latest dumps of oracle 9i sql and 10g database.
Mail id: [email protected]
RegardsKVR
Reply
Anonymous June 14, 2012 at 7:53 PM
GOOD JOB MR.SATHYA...HATS OFF...VERY USEFUL BLOGS
Reply
Satya June 18, 2012 at 6:18 PM
Thank you very much.
- Oracle RAC new features
Reply
Anonymous July 19, 2012 at 10:57 AM
RAID 10 IS SUITABLE FOR INSTALLING ORACLE 11G R2 RAC IN WINDOWS 2008 SERVER..
Regards,
Riyaz.
Reply
Anonymous October 17, 2012 at 12:24 PM
Dear Satya,
hop you are doing well......!!Can you share the RAC installation steps on RHEL 5x./6x.......plz
Thnks,Bhabani
Reply
Anonymous December 21, 2012 at 3:49 PM
Dear satya,
Thanks for spending ur precious time for this blog and sharing the knowledge. can u share some more knowledge doclike Top 10 databases in the world.
Thanks,M jain.
Reply
Babu January 2, 2013 at 7:11 AM
thanks
Reply
Satya Thirumani January 2, 2013 at 9:55 AM
Thank you very much Guys...
Reply
Part3
RACcheck utility racgons commands in RAC racone omotion in RAC RAID SCAN in RAC
srvconfig commands in RAC srvctl commands in RAC Virtual IP (VIP) in RAC Wait Events in Oracle RAC
What's new in Oracle 12c RAC What's new in Oracle 9i/10g/11g
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Page 4 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
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Anonymous January 3, 2013 at 12:22 PM
Hi Seniors,
Yours blog is very useful for me.If you have RAC installation 11g R2 steps for os installation(5.6 above) itselfshare to me.
Thanks,Velmurugan
Reply
Anonymous January 4, 2013 at 9:32 PM
Hats off to Sathya. Yours blog is very very useful for us. Keep going. Take care...
Thanks,Kumar
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Gaurav Vashist January 6, 2013 at 2:11 PM
Good Post on RAC New Feature
Thanks
Reply
Karthik Munnappan January 17, 2013 at 4:36 PM
Hi Satya,
Hope you are doing well... RAC documents are really Good.
Regards,Karthik.V
Reply
Anonymous February 2, 2013 at 9:30 AM
Hi Satya,
Very good blog to get vital info. Do you have any steps to upgrade rac 10gr2 to 11gr2? We are using NFS file systemnot ASM. Any differnce if not used ASM? my email id is [email protected]. Appreciated your response.
Reply
Anonymous March 21, 2013 at 10:38 AM
Hi satya,please share the 11g RAC dumps for certification purpose, send me [email protected]
RegardsVikram
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Page 5 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
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05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Page 7 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Page 8 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Page 9 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
Page 10 of 10Sachin's RAC Blog: New features in Oracle 9i/10g/11g RAC
05-04-2013http://satya-racdba.blogspot.in/2010/07/new-features-in-9i-10g-11g-rac.html
