Exadata and 12c

Hello Gurus,
Could anyone share whats the difference between Exadata and Oracle 12c database? As I searched, it's showing only 12c OEM that supports exadata environment but there is no such 12c database.
Please correct me if I misunderstood.
Thanks,
Amit.

Amit_P wrote:
Hello Gurus,
Could anyone share whats the difference between Exadata and Oracle 12c database? As I searched, it's showing only 12c OEM that supports exadata environment but there is no such 12c database.
Please correct me if I misunderstood.
Thanks,
Amit.Oracle 12c has not been released; in other words it is only vapor-ware now.

Similar Messages

Can we run 11g RAC and 12c RAC in the same server?

There is a requirement to run 11g RAC and 12C RAC in the same server for a year or so and then remove 11g RAC?
Current setup:
HP-unix 3 node RAC on 11g R2
4CPU
64 GB RAM
3 TB SAN storage
no ASM
Upgrade setup:
HP-unix 3 node RAC on 12C RAC
8CPU
128 GB RAM
6+ TB SAN storage
ASM
We are asked to use the same server and upgrade Hardware to install and run 12C RAC. What are the implications of running RAC in the same server/nodes?
Thank you for your time!

Hi,
The following table shows you the compatibility between various versions:
Clusterware
ASM
DB
Certified
12.1
12.1
12.1
Y
12.1
12.1
11.2(a)
Y
12.1
12.1
11.1(a)
Y
12.1
12.1
10.2(a)
Y
11.2
11.2(b)
11.2
Y
11.2
11.2(b)
11.1
Y
11.2
11.2(b)
10.2
Y
11.1
11.1
11.1(c)
Y
11.1
11.1
10.2
Y
11.1
11.1
10.1
Y
11.1
10.2
11.1
Y
11.1
10.2
10.2
Y
11.1
10.2
10.1
Y
11.1
10.1(d)
11.1
Y
11.1
10.1(d)
10.2
Y
11.1
10.1
10.1
Y
10.2
10.2
10.2
Y
10.2
10.2
10.1
Y
10.2
10.1(d)
10.2
Y
10.2
10.1
10.1
Y
10.1
10.1
10.1
Y
(a) Pre-12.1 database instances require an ASM instance resident on the same node as the database instance. Pre-12.1 database instances cannot leverage the implicit HA of Flex ASM.
Oracle Clusterware (CRS/GI) - ASM - Database Version Compatibility (Doc ID 337737.1)

Exadata and Oracle Berkerly DB

Hello
What are key differences between Berkerly DB and Exadata from application and commercial usage stand point?
Other than the well known facts that Exadata is the child out of Oracle-Sun's marriage and it is a competing product against Teradata, and Berkerly DB being an open source DB and exadata is way more expensive:-
From Application and commercial perspective, which is the best option out of Exadata and Berkerly DB?
Is there any comparative analysis that may be available out there, then it would be helpful. I tried googlingwithout any luck.
Thank you for your time in reading this post.
-R

Both are very opposite. Berkely DB is the smallest foot print database especially for mobile devices and embedded databases. Where as EXADATA is just opposite and high end db as told by you. We cannot compare both. For application which are for mobile devices and small web application you can use berkely db.

Exadata and DataGuard

Hi everyone,
I have a doubt with Exadata and DG. Suppose a table with different types of compression. This is, a range partitioned table with the first N partitions compressed with HCC. From N+1 to N+M the table has been partitioned with native 11.2 compression and for the last partitions with no compression. The environment consists of a primary Exadata database and a standby non-Exadata database. In case of switchover/failover, when accessing to compressed data with HCC, I should execute an alter table ... move nocompress. My question is, Could I execute the command only for partitions with HCC compression?. Really only the first partitions are compressed with such criteria and it should not be necessary a lock on the whole table, only for the first partitions.
Best regards.

In a partitioned table, "ALTER TABLE MOVE" can only be done at the partition level, not at the table level. So yes, you only need to rebuild the actual partitions with hybrid columnar compression.
Marc

Oracle 11g and 12c on same windows 7 machine

Hi folks,
Want to try out 12c on my windows 7 laptop but still want to keep my 11g database.
Anyone tried running Oracle 11g and 12c on same windows machine?
Any links or guidelines are appreciated
Thanks

you won't be the first or the last person to try it.
this question can be easily answered but why question something that it's easier to test by yourself?
My advice: Try and if you have problems then question us.

Install WebLogic 11g and 12c to deploy Unifer

Does this mean I need to install both 11g and 12c to make deploy unifer. I wonder why does it need both.

FYI. You do not need to install both 11g and 12c to deploy Unifier. For testing purposes i was able to deploy unifer on 11g weblogic server by creating a domain and deploying it. It seem that 12c is only needed if you have multiple server applications

Exadata and Out of the Box Software

Hello
I would like to know does exadata servers come with 11gR2 software pre-installed ?
What about the Grid Control ?
Regards
Senthil

Exadata comes with 11gR2.
Oracle ACS will assist with all installation steps to ensure your Exadata Database Machine is up and running before they leave the site.
The Grid Control plugins will also be installed and is essential in monitoring Exadata. It is currently the only supported plugin for monitoring purposes.
Oracle ACS does a fine job and is very thorough. Be sure to take as many notes/screen captures when they are present. It will be very beneficial.
- Wilson
www.michaelwilsondba.info

Exadata and System Statistics

Hi, there,
This might be a dumb question – but is it necessary to gather system statistics on Exadata machines?
I (fairly) recently migrated my Production EDW from a V2 quarter-rack to an X3-2 quarter-rack. On a “normal” system, if I migrated the database to a different (faster) server, I would look at regathering the system statistcs.
Is this something that’s sensible or worthwhile with Exadata?
Mark

Hi Mark,
Before you gather system stats you can run the following sql to get your current values.
SET SERVEROUTPUT ON
DECLARE
STATUS VARCHAR2(20);
DSTART DATE;
DSTOP DATE;
PVALUE NUMBER;
PNAME VARCHAR2(30);
BEGIN
   PNAME := 'CPUSPEEDNW';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('cpuspeednw                  : '||pvalue);
   PNAME := 'IOSEEKTIM';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('ioseektime in ms            : '||pvalue);
   PNAME := 'IOTFRSPEED';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('iotfrspeef                  : '||pvalue);
   PNAME := 'SREADTIM';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('single block readtime in ms : '||pvalue);
   PNAME := 'MREADTIM';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('multi block readtime in ms : '||pvalue);
   PNAME := 'CPUSPEED';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('cpuspeed                    : '||pvalue);
   PNAME := 'MBRC';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('multiblock read count       : '||pvalue);
   PNAME := 'MAXTHR';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('max threads                 : '||pvalue);
   PNAME := 'SLAVETHR';
   DBMS_STATS.GET_SYSTEM_STATS(status, dstart, dstop, pname, pvalue);
   DBMS_OUTPUT.PUT_LINE('slave threads               : '||pvalue);
END;
Best advice I can give would be to check Doc ID 1274318.1 and search for dbms_stats.
Regards,
Tycho

Exadata and OLTP

hello experts,
in our environment, OLTP databases (10g,11g) are on single instance mode and we are planning to do a feasibility analysis on moving to Exadata
1) as per exadata related articles, exadata can provide better OLTP performance with flash cache.
if we can allocate enough SGA as per the application workload then what is the meaning in moving in exadata?
2) any other performance benefits for OLTP databases?
3) since exadata is pre-configured RAC, will it be a problem for non-RAC databases which are not tested on RAC
in general, how can we conduct an effective feasibility analsysis for moving non RAC OLTP databases to exadata
thanks,
charles

Hi,
1.Flash cache is one of the advantage in Exadata, to speed up your sql statement processing.Bear in ind that it s done on the storage level and it should not be compared directly with a non Exadata machine.
2.As far as I know, besides faster query elapsed, we can also benefit from compression (hybrid columnar compression - Exadata spesific)
and also as the storage is located inside the Exadata machine, thus will decrease the I/O factor of your database perfromance.
3.you can have a single node database in Exadata.just set the connection to directly used the phyisical ip, instead of using scanip (11g) for RAC.
I think the best thing to access, is project the improvement and cost saving if you are going to migrate to Exadata.Access the processing improvement you will gain, the storage used and also the license cost.usually,most shops used Exadata to consolidate their different physical db boxes
br,
mrak

Exadata and Oracle VM

The other question is whether the subject is supported to install Oracle VM (configured according to the note http://www.oracle.com/technology/tech/virtualization/pdf/ovm-hardpart.pdf) at the nodes of Exadata.
Thank you very much for the help

Thank you for your clarification Uwe.
Indeed I mixed up the two items. Sadly I hoped that there was indeed an Oracle VM for Exadata, which would have been logical / practical for a SME organization moving to the Exastack platform.
Just to see that I understand the current Exastack Engineered systems offers, I am outlining the salient points:
1. Exadata - Is designed (marketed) to be an Oracle 11g + RAC exclusively, running under Oracle Linux. CPU licensing is satisfied by physically (hardware) disabling CPU's supplied in the unit.
2. Exalogic - Is designed (marketed) for the middle-ware / applications, Using Oracle VM + Oracle Linux, and optionally the Oracle SOA Suite middleware Applications, plus third party application, and possible other host O/S supported by Oracle VM.
If an organization has a web application, based on traditional web server front tier, application server tier (JAVA / JEE), and a data tier (Oracle DB), then what are the choices to move to the Exastack platform:
1. Move the Web / application server tiers to Exalogic, and the data tier to Exadata, seems the way the engineered platform is marketed, however depending on the application design / usage, this may not justify that level of investment. e.g. If the application is application intensive, then an Exalogic with a relatively small Oracle DB instance is required, alternatively if there is a DB intesive application, then an Exadata with a relatively small web / application server tier is required. Hence perhaps would it not be logical to offer such a hybrid "Exastack" model for SME starting out, then when volumes demand it scaling horizontally:
e.g. Get Exadata for the Oracle 11g + RAC, and reserve 2 or more processing units (X3-2) for the middle-ware (Oracle VM + Oracle Linux) in the same physical rack, when volumes increase, a dedicated Exalogic is added and the middle-ware applications migrated to the Exalogic platform, freeing up (scaling up) the Exadata platform.
In addition, given the licencing restriction, can Exadata be partitioned for a production database instance/s and development instance/s on the same physical rack? Note; this might be somewhat worked around, since a HA demanding business may have a DR site with a second Exadata, which can host the development DB instances when in normal operations mode.
I feel this is more of a marketing rather than technical issue here, but if there is some flexibility in the Exastack configuration, would simplify and lower the affordability bar for SME / start-ups.
Appreciate any views.
Best regards,
Jesmond

Oracle 10G support and 12C release

Hi,
I am interested in new about Oracle 12C ---Cloud compute DB system. we have 10G database
When 12C will be released ?
When oracle10G will not supported by oracle
As I know 10G released in 2004 and 10gR2 in 2006. Normally speaking, 10G support will be terminated next year (after released 5 years).
Any updated for this event?
Jim

Premier support has already ended on Oracle 10gR2 last july.
Ie, no new bugs will be fixed.
Sybrand Bakker
Senior Oracle DBA

Website Content : Coherence and 12c Crowd Control

At the time of posting the page:
http://www.oracle.com/us/products/middleware/cloud-app-foundation/coherence/resources/index.html
Has a hyper link to a PDF ( http://www.oracle.com/us/products/middleware/cloud-app-foundation/em12c-cloud-control-wp-1865177.pdf ) entitled:
Enterprise Manager 12c Crowd Control_: Monitoring and Managing Oracle Coherence for High Performance (PDF)
..... well with my head in the cloud I have never heard of Enterprise Manager 12c "Crowd Control" before and wonder if it should be controlled?

bigdelboy wrote:
At the time of posting the page:
http://www.oracle.com/us/products/middleware/cloud-app-foundation/coherence/resources/index.html
Has a hyper link to a PDF ( http://www.oracle.com/us/products/middleware/cloud-app-foundation/em12c-cloud-control-wp-1865177.pdf ) entitled:
Enterprise Manager 12c Crowd Control_: Monitoring and Managing Oracle Coherence for High Performance (PDF)
..... well with my head in the cloud I have never heard of Enterprise Manager 12c "Crowd Control" before and wonder if it should be controlled?Without proper crowd control, things can quickly get nasty ... blocked traffic (leading to timeouts), smashed windows (wait .. smashed Windows .. maybe that's a good thing!).

Reg: Exadata and /*+ FULL */ hint -

Hi Experts,
Recently, our database got migrated to Exadata environment, and a DBA told me that using the /*+ FULL */ hint in the query increases the query performance.
Doubt -
1) Does it actually enhance performance?
2) I read some articles and got some information that Exadata does some kind of "Smart Scan" and "Cell Offloading" which makes the query efficient. But how does FULL hint contribute here?
This links talks something about this, but not sure if correct - Some Hints for Exadata SQL Tuning - Part III - SQL Optimizer for Oracle - SQL Optimizer for Oracle - Toad World
Please share your thoughts and advise.
Thanks and Regards,
-- Ranit
( on Oracle 11.2.0.3.0 - Exadata )

Ranit -
Lots of good advice given by others. A little more to add to the comments already made...
Using a full hint as a general tuning rule on Exadata would not be a good idea, just like the sometimes proposed notion of dropping all indexes on Exadata to performance is not a good idea. As Mohamed mentions, a key performance optimization for Exadata are the smart scans, which do require direct path reads. Pushing for smart scans is what drives these types of ideas; because, other than the index fast full scan, index scans will not smart scan. However, smart scanning isn't always faster. OLTP type queries that are looking for one or two rows out of many are still usually faster with an index even on Exadata. If you find using a hint like FULL does improve a query's performance, then just as with using hints in general, it's better to determine why the optimizer is not picking the better execution plan, a full table scan in this case, in the first place; and resolve the underlying issue.
What you will probably find is you are over-indexed on Exadata. If you have control of the indexes in your environment, test by making certain indexes invisible and seeing if that helps performance. Indexes that were created to eliminate a percentage, even a large percentage, of rows, but not almost all rows for queries are candidates to be dropped. You definitely want to tune for direct path reads.
This is done by doing index evaluations as described; making sure your stats are accurate and up-to-date; as mentioned by Franck, be sure to gather the Exadata system stats - as this is the only thing that helps the optimizer be Exadata aware. And also, especially if you are running a data warehouse workload, you can look into using parallelism. Running queries in parallel, often even with a degree as little as 2, will help prompt the optimizer to favor direct path reads. Parallelism does need to be kept in check. Look into using the DBRM to help control parallelism - possibly even enabling parallel statement queuing.
Hopefully these will give you some ideas of things to look at as you enter the realm of SQL Tuning on Exadata.
Good luck!
-Kasey

Exadata and smart scans

Hi,
I have an Oracle RDBMS 11gR2 that runs on Exadata.
I have several processes that run with a full table scans with resonably "huge" tables (up to few GB).
I would expect that a "smart scan" be used to "speed up the process".
The runs are working for alreay hours.
I get execution plans of that kind:
| Id | Operation                    | Name                      | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | INSERT STATEMENT             |                           |       |       | 3532K(100)|          |
|   1 | LOAD AS SELECT              |                           |       |       |            |          |
|   2 |   FILTER                     |                           |       |       |            |          |
|   3 |    HASH JOIN                 |                           | 24634 |   344M| 3532K (1)| 15:42:08 |
|   4 |     TABLE ACCESS STORAGE FULL| DPV_97_130556316111576318 | 24634 |   625K|   400K (2)| 01:46:42 |
|   5 |     TABLE ACCESS STORAGE FULL| DPV_96_130556316111576318 |   194K| 2724M| 3132K (1)| 13:55:26 |
Can someone explainsme how I can check is smart scan is used, via a query?
If not used, can someone explains me how to "enable" and under which conditons I should?
Thanks by advance for any tips.
Kind Regards

HELLO,
If the explain plan shows the storage clause in the plan then the query goes for smart scan.
Query goes to smart scan when below conditions are met.
1.Segment_size>_small_table_target(hidden init.ora parameter)
2.DB Buffer Cache should not have more than 50% data blocks of the table.
3.Dirty buffers in db_buffer_cache should be less than 25%.
Smart scan is applied to queries which goes for full table scans,parlell queries,Index fast full scan.
Hope this will be helpful.
Regards,
Thimmappa

ExaData and Stand By

Hi,
Please advice regarding the following senario :
Have an Exadata machive x2-2 half rac.
I want to use Exadata Hybrid Columnar Compression in order to speed performance.
In the DRP site have a linux rehdat x86-64 11gr2 single instance.
What need to be done in the None exadata instance in the DRP site in order to allow it to apply the archives that was compressed in the Exadata machine ?
Is it possible ?
Thanks

Standby databases can apply redo generated for changes to EHCC objects. However, when the standby is opened, those EHCC compressed segments will not be able to be queried. To enable query against those segments, you'll have to migrate them to a non-EHCC format (either OLTP compression, standard compression, or no compression). This will require space and time that depend on the size of the object and its compression ratio. This decompression can be done on a non-Exadata platform.
For more details, see the whitepaper at http://www.oracle.com/technetwork/database/features/availability/maa-wp-dr-dbm-130065.pdf

Exadata and 12c

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