Oracle Cluster Best Practice

Is there a "Best Practice" to follow concerning Oracle and clustering. Currently we are using VCS trying to cluster a box running one Oracle engine and multiple instances. This is not working well. Is it best to cluster a box running one Oracle engine and one instance?, or is the multi-instance thing ok? Also, is VCS the best solution? Please respond to my email below.
TIA
James Qualls
[email protected]

Similar Messages

Oracle BPM Best Practices

Hi all,
Anybody has any information on the Oracle BPM Best Practices?
Any guide?

All,
I was trying to find a developers guide for using Oracle BPM Suite (11g). I found the one in the following link, however this looks like a pretty detailed one...
http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/toc.htm
Can you someone help me find any other flavors of the developers guide? I am looking for the following...
1. Methods of work - Best Practices for design and development of BPM process models.
2. Naming Conventions for Process Modeling - Best Practices
3. Coding standards for Process Modeling (J Developer)
4. Guide with FAQ's for connecting / Publishing Process Models to the MDS Database.
5. Deployment Standards - best practices....
6. Infrastructure - Recommendations for Scale out deployment in Linux v/s Windows OS.
Regards,
Dinesh Reddy

Oracle VM Best Practices

Hello,
Can anybody share Best practices for Oracle VM implementation and the test plan executed to validate the implementation before moving to production.
Thanks in advance
Dani

NAME TARGET STATE SERVER STATE_DETAILS
Local Resources
ora.DATA.dg
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
ora.LISTENER.lsnr
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
ora.asm
ONLINE ONLINE orarac001 Started
ONLINE ONLINE orarac002 Started
ora.eons
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
ora.gsd
OFFLINE OFFLINE orarac001
OFFLINE OFFLINE orarac002
ora.net1.network
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
ora.ons
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
ora.registry.acfs
ONLINE ONLINE orarac001
ONLINE ONLINE orarac002
Cluster Resources
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE orarac001
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE orarac002
ora.LISTENER_SCAN3.lsnr
1 ONLINE ONLINE orarac002
ora.oc4j
1 OFFLINE OFFLINE
ora.orarac001.vip
1 ONLINE ONLINE orarac001
ora.orarac002.vip
1 ONLINE ONLINE orarac002
ora.orcl.db
1 ONLINE ONLINE orarac001 Open
2 ONLINE ONLINE orarac002 Open
ora.scan1.vip
1 ONLINE ONLINE orarac001
ora.scan2.vip
1 ONLINE ONLINE orarac002
ora.scan3.vip
1 ONLINE ONLINE orarac002
I'm assuming the "offline" ones are bad :)
EDIT:
it turns out that the offlines in the list are completely normal for 11gR2
any one have any idea what's going on??
Thanks!
Edited by: user12245235 on Jul 28, 2011 5:24 PM

Oracle Statistics - Best Practice?

We run stats with brconnect weekly:
brconnect -u / -c -f stats -t all
I'm trying to understand how some of our stats are old or stale. Where's my gap? We are running Oracle 11g and have Table Monitoring set on every table. My user_tab_modifications is tracking changes in just over 3,000 tables. I believe that when those entries surpass 50% changed, then they will be flagged for the above brconnect to update their stats. Correct?
Plus, we have our DBSTATC entries. A lot of those entries were last analyzed some 10 years ago. Does the above brconnect consider DBSTATC at all? Or do we need to regularly run the following, as well?
brconnect -u / -c -f stats -t dbstatc_tab
I've got tables that are flagged as stale, so something doesn't seem to be quite right in our best practice.
SQL> select count(*) from dba_tab_statistics
2 where owner = 'SAPR3' and stale_stats = 'YES';
COUNT(*)
1681
I realize that stats last analyzed some ten years ago does not necessarily mean they are no longer good but I am curious if the weekly stats collection we are doing is sufficient. Any best practices for me to consider? Is there some kind of onetime scan I should do to check the health of all stats?

Hi Richard,
> We are running Oracle 11g and have Table Monitoring set on every table.
Table monitoring attribute is not necessary anymore or better said it is deprecated due to the fact that these metrics are controlled by STATISTICS_LEVEL nowadays. Table monitoring attribute is valid for Oracle versions lower than 10g.
> I believe that when those entries surpass 50% changed, then they will be flagged for the above brconnect to update their stats. Correct?
Correct, if BR*Tools parameter stats_change_threshold is set to its default. Brconnect reads the modifications (number of inserts, deletes and updates) from DBA_TAB_MODIFICATIONS and compares the sum of these changes to the total number of rows. It gathers statistics, if the amount of changes is larger than stats_change_threshold.
> Does the above brconnect consider DBSTATC at all?
Yes, it does.
> I've got tables that are flagged as stale, so something doesn't seem to be quite right in our best practice.
The column STALE_STATS in view DBA_TAB_STATISTICS is calculated differently. This flag is used by the Oracle standard DBMS_STATS implementation which is not considered by SAP - for more details check the Oracle documentation "13.3.1.5 Determining Stale Statistics".
The GATHER_DATABASE_STATS or GATHER_SCHEMA_STATS procedures gather new statistics for tables with stale statistics when the OPTIONS parameter is set to GATHER STALE or GATHER AUTO. If a monitored table has been modified more than 10%, then these statistics are considered stale and gathered again.
STALE_PERCENT - Determines the percentage of rows in a table that have to change before the statistics on that table are deemed stale and should be regathered. The valid domain for stale_percent is non-negative numbers.The default value is 10%. Note that if you set stale_percent to zero the AUTO STATS gathering job will gather statistics for this table every time a row in the table is modified.
SAP has its own automatism (like described with brconnect and stats_change_threshold) to identify stale statistics and how to collect statistics (percentage, histograms, etc.) and does not use / rely on the corresponding Oracle default mechanism.
> Any best practices for me to consider? Is there some kind of onetime scan I should do to check the health of all stats?
No performance issue? No additional and unnecessary load on the system (e.g. dynamic sampling)? No brconnect runtime issue? Then you don't need to think about the brconnect implementation or special settings. Sometimes you need to tweak it (e.g. histograms, sample sizes, etc.), but then you have some specific issue that needs to be solved.
Regards
Stefan

Oracle 10G Best practice Installation

Hi all,
Somebody will have a document of like doing Oracle 10G tuning in Solaris 10?
Thanks

oops sorry, that's best practices and not tuning. But there may be some stuff in there.

Oracle URM - best practices?

does anyone know where i can find best practices with RM?
thanks in advanced.

Not sure about best practices, but I have created a demo script which can guide you through few basic concepts. Drop me an email ([email protected]) and I can send you a copy.

For DB2 to Oracle conversion best practices

My company is enhancing existing application adding newly J2ee web interface and database as DB2.I am new to J2EE. In future if we want to migrate my database to Oracle,which are the best things to do it now.
Which J2EE framework is good in respecte JDBC connectivity and future migration of DB2 to Oracle? (Minimal changes at Migration Time)
It is medium size application with 5000 users.Which are other best practises to follow in development keeping the migration in Mind. Thanks..

Yes, you should login as system, create a user, appowner, or what ever you call it, and assign that user a default tablespace of 'USERS' or whatever tablespace you decide. Then, grant that user all the privileges to create objects, i.e., create table, create procedure, create synonym, etc, etc.
Then, logout as system, login as appowner, and do all your object creation from there.
A user is a set of credentials that allow you access to the system. It defines your identity and your privileges and authority to do various things. A schema is the set of objects owned by a particular user. As soon as a user owns at least one object, that implicitly defines his schema. It's not possible for a user to own or control multiple schemas. If you want multiple schemas, that's fine, but you'll need multiple users, and each user will manage his own schema.
Hope that's clear,
-Mark
PS I strongly suggest you review the Concepts Guide, it really is quite good. It can be found here: http://download.oracle.com/docs/cd/E11882_01/server.112/e10713/toc.htm

Typos in Oracle Spatial Best Practices doc by Dan Geringer

Hi there,
I was looking through Dan Geringer's notes setting up SDO_JOIN to run in parallel here:
http://download.oracle.com/otndocs/products/spatial/pdf/oow2010/spatial/spatialoow10_bestpractices.pdf
Anyhow, noticed few boo-boos all having to do with table aliases in the examples. They are not too hard to catch but still might trip up folks.
On page 37, the example is missing a table alias of "a". E.g. it should say
CREATE TABLE result1 NOLOGGING PARALLEL 4 AS
SELECT a.rowid1 AS risk_zones_rowid,
a.rowid2 AS parcels_rowid
FROM TABLE (SDO_JOIN ('RISK_ZONES', 'GEOM',
' PARCELS', 'GEOM')) a;but its missing that final "a".
On page 38, the table aliases are incorrect in the relate statement. E.g. it should be
CREATE TABLE result2 NOLOGGING PARALLEL 4 AS
SELECT /*+ ordered use_nl (a,b) use_nl (a,c) */
sdo_geom.relate (b.geom, 'DETERMINE', c.geom, .05) relation,
b.risk_zone_id, c.parcel_id
FROM result1 a, risk_zones b, parcels c
WHERE a.risk_zones_rowid = b.rowid
AND a.parcels_rowid = c.rowid;Nothing too serious but thought I'd point it out.
Cheers,
Paul

Hi Paul,
Thanks for pointing out the typos. Will forward them to Oracle Technical Doc group to have them corrected.
jack

Oracle's Best practice for avoiding contingency data problems

What is Oracle's recommendation to avoid having contingency database problems? Is the timestamp data type good enough for avoiding having the a record updated twice?
Any feedback is welcome.

It means you need to lock the records all by yourself.
3 month ago,I try to simulate the Oracle Developer_2000_Form_6I ,and I found that they use "select .. for update no wait where .. " to lock record in Text_Change event. Then I did it,It seems working ok now in my vb.net program.
Jimy Ho
[email protected]

Oracle OLAP best practice and DB11g parameter suggestion

Hi All ,
We have huge partitioned fact table with nearly 1 billion of data(15GB export dump) for range by month partition holding 24 months data. Any special recommendation you prefer for parameters (AWM etc.) ?
or else any recommendation to Create cube strategies ?
Also any recommandation on Cube partition and Database 11g paramater(int.ora) related changes for OLAP 11g cube ?
Thanks in advance,
Debashis

There are recommended parameters and recommended strategies in the Oracle documentation.
For starters, I recommend these guides:
VLDB and Partitioning Guide
Data Warehousing Guide
OLAP User's Guide
All of which can be found at:
http://www.oracle.com/pls/db112/portal.all_books

Any Oracle best practice/standards for inter-DataCente links for Oracle RAC

Hello Oracle Experts,
Am working for a customer to set up Oracle RAC architecture hosting SAP/Non-SAP applications per SLA levels(MC/BC/Standard) specs. Currently my network team needs calculation to arrive at whether we will go for a (1), (2) or (3) 10Gig links for inter DC (Data-Center) for Oracle RAC.. below is additional background:
•     Porting all client SAP/Non-SAP Oracle databases to new 2 data-centers.
•     There will be 10 blades (4x BL680s and 6x BL460s) in each DC (can scale-up/out later on).
•     Clusters architecture to support Extended/Stretched RAC cluster feature
•     Clusters 2-node each(1-datacenter1, 1-datacenter2) and nodes distributed across 2 x c7000 such that no cluster has more than one node in an enclosure.
•     Each node will have - 4 NIC ports ( 2 x public and 2 x private) , 2 dual-port HBA
•     Oracle ASM/ACFS (ASM Cluster File System), Voting Disk, OCR and Database files
•     the versions are Oracle 11g RAC, Oracle 10g RAC and Oracle 9i (for DataGuard/Standby) on RHEL 6 on Proliant Blades (x86) + BladeMatrix
My network colleagues considering using DWDM across the 2 DCs(given the lesser cost?). Am still looking around if there are any Oracle/industry-best practices around this and having a calculation to support that..
Many Thanks in advance..
Regards,
Abhijit

Hi ,
There are no specific set of steps / practices for batch loading contents to ucm . It would be very much dependent on how many contents does the user have to load to UCM and how well the server is configured in terms of performance .
You can get more details from the following documentation link : http://docs.oracle.com/cd/E21043_01/doc.1111/e10792/c02_settings009.htm
Thanks,
Srinath

Oracle Custom Workflow Redesign best practices

Hi All,
Morning , need some help with this scenario.
We are in the process of redesigning existing developed custom Oracle Workflows in our system ( Oracle Apps Release 12.0.6 )
hence wanted to know if there are steps or guidelines/best practices which could be followed in this situation on points like handling performance issues with the workflow , how to handle the purging of the obsolete workflow data , design steps regards notifications, how to handle error conditions with workflow activities and how to retry activities ( means if any activity within the workflow process shows error how it could be retried or re executed in real time without any delay).
means any pointers which could be considered for this redesign actvity , any best practices document/steps and guidelines would be really very very helpful here...
Regards

This is a very broad question - narrowing it to specifics might help folks respond better.
There are a lot of documents on MOS that refer to best practices from a technology stack perspective.
Oracle Workflow Best Practices Release 12 and Release 11i (Doc ID 453137.1)
As far as functional practices are concerned, these may vary from module to module, as functionality and workflow implementation vary from module to module.
FAQ: Best Practices For Custom Order Entry Workflow Design (Doc ID 402144.1)
HTH
Srini

Require official Oracle Best Practices about PSU patches

A customer complained about the following
Your company statements are not clear...
On your web page - http://www.oracle.com/security/critical-patch-update.html
The following is stated!
Critical Patch Update
Fixes for security vulnerabilities are released in quarterly Critical Patch Updates (CPU), on dates announced a year in advance and published on the Oracle Technology Network. The patches address significant security vulnerabilities and include other fixes that are prerequisites for the security fixes included in the CPU.
The major products patched are Oracle Database Server, Oracle Application Server, Oracle Enterprise Manager, Oracle Collaboration Suite, Oracle E-Business Suite, PeopleSoft Enterprise Tools, PeopleSoft CRM, JD Edwards EnterpriseOne, JD Edwards OneWorld XE, Oracle WebLogic Suite, Oracle Communications and Primavera Product Suite.
Oracle recommends that CPUs be the primary means of applying security fixes to all affected products as they are released more frequently than patch sets and new product releases.
BENEFITS
* Maximum Security—Vulnerabilities are addressed through the CPU in order of severity. This process ensures that the most critical security holes are patched first, resulting in a better security posture for the organization.
* Lower Administration Costs—Patch updates are cumulative for many Oracle products. This ensures that the application of the latest CPU resolves all previously addressed vulnerabilities.
* Simplified Patch Management—A fixed CPU schedule takes the guesswork out of patch management. The schedule is also designed to avoid typical "blackout dates" during which customers cannot typically alter their production environments.
PROGRAM FEATURES
* Cumulative versus one-off patches—The Oracle Database Server, Oracle Application Server, Oracle Enterprise Manager, Oracle Collaboration Suite, Oracle Communications Suite and Oracle WebLogic Suite patches are cumulative; each Critical Patch Update contains the security fixes from all previous Critical Patch Updates. In practical terms, the latest Critical Patch Update is the only one that needs to be applied if you are solely using these products, as it contains all required fixes. Fixes for other products, including Oracle E-Business Suite, PeopleSoft Enterprise Tools, PeopleSoft CRM, JD Edwards EnterpriseOne, and JD Edwards OneWorld XE are released as one-off patches, so it is necessary to refer to previous Critical Patch Update advisories to find all patches that may need to be applied.
* Prioritizing security fixes—Oracle fixes significant security vulnerabilities in severity order, regardless of who found the issue—whether the issue was found by a customer, a third party security researcher or by Oracle.
* Sequence of security fixes—Security vulnerabilities are first fixed in the current code line. This is the code being developed for a future major release of the product. The fixes are scheduled for inclusion in a future Critical Patch Update. However, fixes may be backported for inclusion in future patch sets or product releases that are released before their inclusion in a future Critical Patch Update.
* Communication policy for security fixes—Each Critical Patch Update includes an advisory. This advisory lists the products affected by the Critical Patch Update and contains a risk matrix for each affected product.
* Security alerts—Security alerts provide a notification designed to address a single bug or a small number of bugs. Security Alerts have been replaced by scheduled CPUs since January 2005. Unique or dangerous threats can still generate Security Alert email notifications through MetaLink and the Oracle Technology Network.
Nowhere in that statement is the Patch Set Update even mentioned. If Oracle intends to recommend to all customers that Patch Set Updates are the recommended means of Patching for Security and Functionality then it should be stated so here!
Please clarify!
Where can I find the current information so that I can use to Official Oracle statement as a reference for my Enterprise Practices and Standards document? The individual patch package references you are giving me do not state Oracle recommended Best Practice, they only speak to the specific patch package they describe. These do not help me in making an Enterprise statement of Practices and Standards.
I need to close the process out to capture a window of availability for Practices and Standards approval.
Do we have any Best Practice document about PSU patches available for customers?

cnawrati wrote:
A customer complained about the following
Your company statements are not clear...
On your web page - http://www.oracle.com/security/critical-patch-update.html
Who is the "your" to which you are referring?
<snip>
Nowhere in that statement is the Patch Set Update even mentioned. If Oracle intends to recommend to all customers that Patch Set Updates are the recommended means of Patching for Security and Functionality then it should be stated so here!Um. OK
Please clarify!
Of whom are you asking for a clarification?
Where can I find the current information so that I can use to Official Oracle statement as a reference for my Enterprise Practices and Standards document? The individual patch package references you Who is the "you" to which you refer?
are giving me do not state Oracle recommended Best Practice, they only speak to the specific patch package they describe. These do not help me in making an Enterprise statement of Practices and Standards.
I need to close the process out to capture a window of availability for Practices and Standards approval.
Be our guest.
Do we What do you mean "we", Kemosabi?
have any Best Practice document about PSU patches available for customers?This is a very confusing posting, but overall it looks like you are under the impression that this forum is some kind of channel for communicating back to Oracle Crop anything that happens to be on your mind about their corporate web site and/or policies and practices. Please be advised that this forum is simply a platform provided BY Oracle Corp as a peer operated user support group. No one here is responsible for anything on any Oracle web site. No one here is responsible for any content anywhere in the oracle.com domain, outside of their own personal posting on this forum. In other words, you can complain all you want about Oracle's policy, practice, and support, but "there's no one here but us chickens."

Oracle Best Practices in 10g When Disabling NUMA

We have both Linux and Solaris 10 DB servers running 10g on them with NUMA. What is Oracle's best practice for dealing with NUMA in hardware when it can be disabled?

user10387007 wrote:
We have both Linux and Solaris 10 DB servers running 10g on them with NUMA. What is Oracle's best practice for dealing with NUMA in hardware when it can be disabled?How are you using NUMA (Non Uniformed Memory Access)?
NUMA can be implemented at CPU level - in which case CPU affinity becomes important. NUMA can be used across an Interconnect (e.g. SCSI over RDMA protocol).
So it depends on what you mean by NUMA and how you are using it (and whether or not it is used by the Oracle s/w stack itself).

Best Practice for migration to Exadata2

Hi Guru,
I'm thinking to migrate an Oracle RAC 11g (11.2.0.2) on HP/UX Itanium cluster machine to a New Exadata 2 System
Are there best practice? Where can I found documentation about migration?
Thanks very much
Regards
Gio
Edited by: ggiulian on 18-ago-2011 7.39

There are several docs available on MOS
HP Oracle Exadata Migration Best Practices [ID 760390.1]
Oracle Exadata Best Practices [ID 757552.1]
Oracle Sun Database Machine X2-2/X2-8 Migration Best Practices [ID 1312308.1]
If you already have Exadata, I recommend to open an SR with Oracle and engage with ACS.
- Wilson
www.michaelwilsondba.info

Oracle Cluster Best Practice

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