A question about Oracle RAC

Hello
I see a question:
by one thread in one process on one machine, select a row by unique condition , show can not find , and then insert a the same row, show occur error violate unique;
ask for help!

i hope , this links may help you.
Thread: Server side Load balancing in RAC
Server Side Load Balancing Testing
read Oracle documentation:
http://www.oracle.com/pls/db102/search?word=server+side+load+balancing&partno=
http://www.oracleracexpert.com/2010/01/oracle-rac-load-balancing-and-failover.html
http://www.databasejournal.com/features/oracle/article.php/3659411/Oracle-RAC-Administration---Part-15-Connection-Load-Balancing-and-FAN.htm
http://oracleinstance.blogspot.com/2010/08/transparent-application-failover-taf.html

Similar Messages

About Oracle RAC-CLUSTERS-HTMLDB-APLICATION SERVER

Im trying to learn about Oracle RAC and its integration with others Oracle tools and have some questions that I want to know .
1º) I undertand that a Oracle Cluster are vaious computers that store a extensive Database.
2º) I also understand that a RAC are various computers that keep instances of a ORACLE database, and this database can be store on a CLUSTER.
Now my questions:
Can I have others computers with ORACLE TOOLS, by example, HTMLDB ,to serve web pages with information store in that CLUSTER, or ORACLE APPLICATION SERVER, to serve ORACLE FORMS AND REPORTS by example, also with information store in that . taking information from the instances of database working in the RACś Computer?
By Example Can I have 5 computers , every one with a diferent tool, 3 with htmldb and 2 with aplication server, taking information from one computer of RAC, that have a instances of this database working?
Regards everybody

2º) I also understand that a RAC are various computers that keep instances of a ORACLE database, and this database can be store on a CLUSTER.
Not quite ...
Each part in a RAC IS AN INSTANCE, and each instance controls the same database as all the other instances.
Therefore, HTMLDB, which is simply kept in a database, can be delivererd to the users from any instance, or from all, in the RAC.
FORMS and REPORTS can connect to any instance in the RAC and get exactly the same data from exactly the same database as when connecting to any other instance in the RAC.
Therefore, in a RAC, you do not have different instances 'with different tools'. An external-to-database tool, such as forms, points to one olf the instances. An internal-to-database tool, such as htmldb, is available through all of the instances.

A question about Oracle 1g R2 Enterprise Edition license

Dear all,
I have a question about Oracle license and I would appreciate if you could kindly help me.
I have installed an Oracle server (11g R2 Enterprise edition) on a linux virtual machine. The pc used for this purpose
is my enterprise laptop (therefore a professional and not a personal Computer). However, I use the this Oracle Server
only for learning purpose, that is, only for running the examples in my Oracle Press books (SQL, PL/SQL and some
administration tasks) just for learning the stuff.
There is absolutely no data related to my enterprise, stored or used on this server. Whenever I want to work with my
enterprise data, I use the Oracle server of the enterprise which has of course the appropriate license. So as I said, I
use this Enterprise server on the virtual machine only for running queries/programs in my Oracle Press books just for
learning and I'm the sole person who uses this server (no remote connection for other users).
The reason for which I needed to install this server on my PC was that our DBA couldn't provide a training environment
for me with all required privileges and functionalities.
Am I supposed to buy a license for this installed Enterprise server on my virtual machine?
Thanks in advance,
Dariyoosh

drop.any wrote:
From OTN license agreement:
>
LICENSE RIGHTS
We grant you a nonexclusive, nontransferable limited license to use the programs only for the purpose of developing, testing, prototyping and demonstrating your application, and not for any other purpose. If you use the application you develop under this license for any internal data processing or for any commercial or production purposes, or you want to use the programs for any purpose other than as permitted under this agreement, you must obtain a production release version of the program by contacting us or an Oracle reseller to obtain the appropriate license. You acknowledge that we may not produce a production release version of the program and any development efforts undertaken by you are at your own risk. We may audit your use of the programs. Program documentation, if available, may accessed online at http://otn.oracle.com/docs.
Ownership and Restrictions We retain all ownership and intellectual property rights in the programs. The programs may be installed on one computer only, and used by one person in the operating environment identified by us. You may make one copy of the programs for backup purposes.
You may not:
- use the programs for your own internal data processing or for any commercial or production purposes, or use the programs for any purpose except the development of your application;
- use the application you develop with the programs for any internal data processing or commercial or production purposes without securing an appropriate license from us;
- continue to develop your application after you have used it for any internal data processing, commercial or production purpose without securing an appropriate license from us, or an Oracle reseller;
- remove or modify any program markings or any notice of our proprietary rights;
- make the programs available in any manner to any third party;
- use the programs to provide third party training;
- assign this agreement or give or transfer the programs or an interest in them to another individual or entity; - cause or permit reverse engineering (unless required by law for interoperability), disassembly or decompilation of the programs;
- disclose results of any program benchmark tests without our prior consent.
>Hello again,
Thank you both of you for your help. As it seems to me
>
We grant you a nonexclusive, nontransferable limited license to use the programs only for the purpose of developing, testing, prototyping and demonstrating your application, and not for any other purpose.
>
I think self training can be considered in this category, therefore I think there is no need to buy a license for that.
Kind regards,
Dariyoosh

Several questions about oracle ASM in 11gR2.

Hi, all.
The db is 11.2.0.3 on a linux machine.
I have several questions about oracle ASM functionality.
1. V$ASM_DISKGROUP.ALLOCATION_UNIT_SIZE is the stripe size in bytes??
2. V$ASM_DISK.DISK_NUMBER is unique to a physical disk??
3. if the second question is the case,
disk_number=0 (a physical disk) has 14 partition on it.
And each partition belongs to several diskgroups.
Is ths right??
with q1 as (
     select /*+ use_hash(b,a) */
          disk_number,b.group_number,b.name,a.path,sum(os_mb) tot_size ,count(*) cnt
     from v$asm_disk a, v$asm_diskgroup b
     where a.group_number=b.group_number
     group by disk_number,b.group_number,b.name,a.path
     order by disk_number,b.group_number,b.name
select disk_number,group_number,name,path,tot_size,
       sum(tot_size) over (partition by disk_number) disk_size,
       sum(cnt) over (partition by disk_number) parition_cnt_per_disk
from q1
order by q1.disk_number,group_number
DISK_NUMBER     GROUP_NUMBER     NAME     PATH     TOT_SIZE     DISK_SIZE     PARITION_CNT_PER_DISK
0     1     ARCH     /dev/raw/raw100     53256     454460     14
0     2     AAAREDO1     /dev/raw/raw111     10240     454460     14
0     3     AAAREDO2     /dev/raw/raw113     10240     454460     14
0     4     CRS     /dev/raw/raw83     3000     454460     14
0     5     BBBDATA1     /dev/raw/raw10     50232     454460     14
0     6     BBBDATA2     /dev/raw/raw41     50232     454460     14
0     7     BBBREDO1     /dev/raw/raw1     10240     454460     14
0     8     BBBREDO2     /dev/raw/raw3     10240     454460     14
0     9     CCCDATA1     /dev/raw/raw75     76400     454460     14
0     10     CCCDATA2     /dev/raw/raw165     51300     454460     14
0     11     CCCREDO1     /dev/raw/raw118     10240     454460     14
0     12     CCCREDO2     /dev/raw/raw120     10240     454460     14
0     13     CCCDATA1     /dev/raw/raw125     51300     454460     14
0     14     BBBDDATA     /dev/raw/raw71     57300     454460     14
.Thanks in advance..
Best Regards.
Edited by: 869578 on 2012. 12. 23 오후 10:05

1. No. The stripe size always equals 128 KB in any configuration.
(http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmcon.htm#BABCGDBF)That is not a true statement. Please read the document, the stripe size depends upon what method of striping we using (fine-grained or coarse-grained)
--from the same oracle document:
To stripe data, Oracle ASM separates files into stripes and spreads data evenly across all of the disks in a disk group. The fine-grained stripe size always equals 128 KB in any configuration; this provides lower I/O latency for small I/O operations. The coarse-grained stripe size is always equal to the AU size (not the data extent size).
--are we using fine grained or coarse-grained ? and how to change the striping method (using TEMPLATES)
http://docs.oracle.com/cd/E11882_01/server.112/e16102/asmfiles.htm#g2223792
also see following:
http://oracletechlovers.blogspot.com/2012/06/asm-differences-between-corse-and-fine.html

Few questions about Oracle Times ten

Moved to Few questions about Oracle Timesten
Edited by: ankurk on Nov 4, 2010 6:50 PM
Moved to right place... timesten

Hi,
it is better to ask in the [url http://forums.oracle.com/forums/forum.jspa?forumID=244] Times Ten Forum.
Herald ten Dam
http://htendam.wordpress.com

Basic Questions about Oracle E-Business Suite

I am just now starting to learn about Oracle E-Business Suite.
I am an Oracle DBA, and I want to become an "Oracle Apps DBA".
The following questions pertain to the DATABASE side of E-Business:
*(1)* Is "Oracle E-Business Suite", and "Oracle Applications 11i" the
same product?
*(2)* Is Release 12, the current version of E-Business Suite?
*(3)* What is the Release of E-Business Suite that most Businesses are
currently using?
*(4)* I want to use 1GB of RAM, for the Laptop, that I want to install
E-Business Suite on, and it will be running under Oracle
Enterprise Linux -- Will this type of setup be OK for building a
personal training and learning environment (especially RAM size)?
*(5)* How much disk space do I need, just to do a basic install (no
demo databases)?

Hi,
*(1)* Is "Oracle E-Business Suite", and "Oracle Applications 11i" the
same product?Yes, it even includes R12.
*(2)* Is Release 12, the current version of E-Business Suite?Yes, the most recent versions of R12 are (12.1.1 and 12.1.2).
*(3)* What is the Release of E-Business Suite that most Businesses are
currently using?Depends, some customer still on 11i while other customer managed to upgrade to R12 (or did a fresh installation/implementation of R12).
*(4)* I want to use 1GB of RAM, for the Laptop, that I want to install
E-Business Suite on, and it will be running under Oracle
Enterprise Linux -- Will this type of setup be OK for building a
personal training and learning environment (especially RAM size)?1 GB RAM is not enough, I would suggest you have 4 GB RAM (or more if possible).
*(5)* How much disk space do I need, just to do a basic install (no
demo databases)?This is documented in the installation manual, please refer to it to get the hardware requirements.
Oracle Applications Installation Guide: Using Rapid Install
http://download.oracle.com/docs/cd/B53825_03/current/acrobat/121oaig.pdf
Regards,
Hussein

Question about Oracle Database 11g: Program with PL/SQL

Hello,
I've read that:
This course is a combination of Oracle Database 11g: PL/SQL Fundamentals and Oracle Database 11g: Develop PL/SQL Program Units courses.
In order to preparing for this exam, i should read the student guide, so there are 4 pdf files. One is Oracle Database 11g: PL/SQL Fundamentals, and the other 3 are regarding to Oracle Database 11g: Develop PL/SQL Program Units (volume I, II and III). My question is, regarding to this last one (Oracle Database 11g: Develop PL/SQL Program Units), which volume should i read? I saw that volume I has 400+ pages, and the IIIrd ~80.
Which document should i read? What's the difference between them?
Thanks!

Passing the exam and becoming certified are not a matter of simply reading a book or taking a training class. While books and classroom materials as well as in-class training are all important steps in preparing for an exam, experience and research are just as important. I cannot tell you that there are 53 questions on the exam and every single question maps directly back to page 13, paragraph 3 in XX book. However, If you have the classroom material, and you have the list of exam topics, you should be able to find most of the information you need. In some cases, if you are not completely familiar with a specific topic, or you don't feel like the information in the book gives you all the information you need, you may need to do a little additional research. This is all part of preparing for an exam. This process is what makes you successful as a certified professional.
Your focus seems to be solely on the course materials that you have and what volumes and chapters you should read. I'm trying to give you a different perspective - preparing for an exam is not necessarily about taking one course or reading one book and being ready. You need to review the exam topics and be sure that you are familiar with each topic.
Regards,
Brandye Barrington

VERY Basic Questions about Oracle eBusiness - what "languages" are used?

Please forgive the very basic nature of this post- (I have been in systems (IT) for over 20 years, so I do have lots of systems experience, but no exposure to this particular software.)
So here are the basic questions - I assume that much of the data base logic is written in PL/SQL, but what other tools / languages are the applications written in?
(Oracle Forms, Oracle Reports, Java, C, something else?)
With over 20 years and experience with a number of other packages, I can learn a great deal about an application by 1. Looking at the DB structures (charts), 2. looking into DB code (Packages, triggers, procedure, functions) and 3. Seeing the screen shots.
None of my customers have had Oracle eBusiness - that have had home grown applications or other COTS/packages.
can anyone suggest a place where an independent person can inexpensively get some exposure?
My sincere thanks for any answers/suggestions.

Hi,
Please refer to the following links for details about the different database releases and Oracle tools.
Oracle Timeline
http://www.oracle.com/timeline/index.html
http://www.oracle.com/oramag/profit/07-may/p27anniv_timeline.pdf
Oracle Corporation - Oracle FAQ
http://www.orafaq.com/wiki/Oracle_Corporation
Oracle E-Business Suite consists of Application/Database/Client tiers, you can find more details in [Oracle Applications Concepts|http://www.oracle.com/technology/documentation/applications.html] manual.
Oracle Forms
http://en.wikipedia.org/wiki/Oracle_Forms
Regards,
Hussein

Misc. questions about Oracles SOA software

Hello,
I am a computer science student at the Fachhochschule Aachen in Germany and i'm writing my master thesis about serviceoriented architectures.
Amongst other products i plan to present what oracle has to offer for SOA. But i'm missing some information, which i couldn't find at the website. I hope somebody can help me with my questions:
1) Is it correct that you only need the Application Server and the SOA Suite for a basic SOA setup? And the SOA Suite is included in the Enterprise Edition of the Application Server?
2) The SOA Suite contains the BPEL Process Manager. I just want to know which version of BPEL this tool supports: BPEL4WS 1.0, 1.1, WS-BPEL (2.0)?
3) In my thesis i describe several standards that help with serviceoriented architectures. I want to check if these standards are implemented and if they are, in which product, which version and how extensively? These standards are:
- WS-Policy, WS-Adressing
- JBI (Java Business Integration)
- SCA/SDO (Service Component Architecture/Service Data Objects)
- WS-CDL (Web Service Choreography Description Language)
Are there other important (open) standards i didn't mention (other than the real basic stuff, WSDL, SOAP etc)?
4) What tools does Oracle provide for testing the services and processes?
5) What support does Oracle provide for new customers, that are building their first SOA?
Every help would be appreciated. Thanks in advance.

Learn About All Things SOA:: SOA India 2007:: IISc, Bangalore (Nov 21-23)
Aligning IT systems to business needs and improving service levels within the constraints of tight budgets has for long been the topmost challenge for CIOs and IT decision makers. Service-oriented Architecture (SOA) provides a proven strategy to clearly address both of these objectives. Creating more agile information systems and making better use of existing infrastructure are two leading factors that are boosting SOA adoption across large, medium, and small Indian industries from the BFSI, Retail, Telecom, Manufacturing, Pharma, Energy, Government and Services verticals in India. If you are an IT decision maker belonging to any of these verticals, SOA India 2007 (IISc, Bangalore, Nov 21-23 2007) presents a unique opportunity to gather cutting-edge business and technical insights on SOA and other related areas such as BPM, BPEL, Enterprise 2.0, SaaS, MDM, Open Source, and more.
At SOA India 2007, acclaimed SOA analysts, visionaries, and industry speakers from across the world will show you how to keep pace with change and elevate your IT infrastructure to meet competition and scale effectively. The organisers are giving away 100 FREE tickets worth INR 5000 each to the first 100 qualified delegates belonging to the CxO/IT Decision Maker/Senior IT Management profile, so hurry to grab this opportunity to learn about all things SOA. You can send your complete details, including your designation, e-mail ID, and postal address directly to Anirban Karmakar at [email protected] to enrol in this promotion that is open until 12 October 2007.
SOA India 2007 will also feature two half-day workshops on SOA Governance (by Keith Harrison-Broninski) and SOA Architecture Deep Dive (by Jason Bloomberg). If you are an IT manager, software architect, project leader, network & infrastructure specialist, or a software developer, looking for the latest information, trends, best practices, products and solutions available for building and deploying successful SOA implementations, SOA India 2007’s technical track offers you immense opportunities.
Speakers at SOA India include:
•     Jason Bloomberg, Senior Analyst & Managing Partner, ZapThink LLC
•     Keith Harrison-Broninski, Independent consultant, writer, researcher, HumanEdJ
•     John Crupi, CTO, JackBe Corporation
•     Sandy Kemsley, Independent BPM Analyst, column2.com
•     Prasanna Krishna, SOA Lab Director, THBS
•     Miko Matsumara, VP & Deputy CTO, SoftwareAG
•     Atul Patel, Head MDM Business, SAP Asia Pacifc & Japan
•     Anil Sharma, Staff Engineer, BEA Systems
•     Coach Wei, Chairman & CTO, Nexaweb
•     Chaitanya Sharma, Director EDM, Fair Isaac Corporation
A partial list of the sessions at SOA India 2007 include:
•     EAI to SOA: Radical Change or Logical Evolution?
•     BPEL: Strengths, Limitations & Future!
•     MDM: Jumpstart Your SOA Journey
•     Governance, Quality, and Management: The Three Pillars of SOA Implementations
•     Building the Business Case for SOA
•     Avoiding SOA Pitfalls
•     SOA Governance and Human Interaction Management
•     Business Intelligence, BPM, and SOA Handshake
•     Enterprise 2.0: Social Impact of Web 2.0 Inside Organizations
•     Web 2.0 and SOA – Friends or Foe?
•     Achieving Decision Yield across the SOA-based Enterprise
•     Governance from day one
•     Demystifying Enterprise Mashups
•     Perfecting the Approach to Enterprise SOA
•     How to Build Cost Effective SOA. “Made in India” Really Works!
For more information, log on to http://www.soaindia2007.com/.

[Urgent] Some questions about Oracle Portal 10g - 11g upgrade

Dear friends,
We are under doing upgrading assessment of Oracle Portal from 10g to 11g. After reviewed the 'upgrading guide', we still have some questions as below:
1. Whether the 'Instant Portal' feature remain in Oracle Portal 11g? If yes, how to migrate the Instant Portal 10g sites? If no, any workaround?
2. Whether the old 10g Page Group and Pages will be still available after 11g upgrade? Also can customer import the old 10g transportset into Portal 11g?
3. How about the customized Portal 10g objects (such as customized template, style, attributes) after 11g upgrade? Still be usable?
4. Customer use PDK to develop many portlets in 10g. Can they use JDeveloper 11g to migrate their old project to 11g automatically?
Thank you in advance and any comment are welcome.

1. Whether the 'Instant Portal' feature remain in Oracle Portal 11g? If yes, how to migrate the Instant Portal 10g sites? If no, any workaround?Instant Portal is not available anymore in Oracle Portal 11g. The Instant Portal page groups will be migrated to standard Portal page groups. Maintenance of the Instant Portal can be done with the standard Portal tools. The Instant Portal tools are not available anymore.
Whether the old 10g Page Group and Pages will be still available after 11g upgrade? Also can customer import the old 10g transportset into Portal 11g?Old 10g Page Groups are migrated to Portal 11g. They will still be available after the upgrade.
Export/Import through transports sets has always been limited to instances of the same version. It is not supported between versions as documented in the Administration Guide :
[11.2.1|http://download.oracle.com/docs/cd/E14571_01/portal.1111/e10239/cg_imex.htm#CCJBCCGD] System Requirements
Before exporting and importing content, ensure that your system meets the minimum system requirements, as described in this section.
Notes:
* Export and import functions only within the same release of Oracle Portal and the same patch release, for example, release 10.1.4 to release 10.1.4 or release 11.1.1 to release 11.1.1. You cannot export and import between two different releases, such as release 10.1.2 to release 10.1.4 or release 10.1.4 to release 11.1.1.
How about the customized Portal 10g objects (such as customized template, style, attributes) after 11g upgrade? Still be usable?Customized objects get migrated as well. Certain types (e.g. PL/SQL item types) need to be checked after upgrade as the behavior of the PL/SQL code may differ between database versions. This is particularly of concern when the 10.1.4.x Portal uses a 10.1 database. A database upgrade to either 10.2, 11.1 or 11.2 is necessary as Portal 11g is not supported with RDBMS 10.1.
Customer use PDK to develop many portlets in 10g. Can they use JDeveloper 11g to migrate their old project to 11g automatically?Never done this, but the Portal framework is able to consume JPDK providers which are running in older versions of the toolkit. If the providers are running in standalone OC4J containers, you would be able to upgrade the framework and keep the providers in their OC4J containers. This will allow you to focus on the framework first and worry about your providers later.
Thanks,
EJ

Question about Oracle Client Software

Hi!
I'm going to develop a software which will access an Oracle Database somewhere on the network. This software will be developed using C++ language and will run on a Linux RedHat 7.3 machine.
Searching for APIs to connect with Oracle Database, I found OCI and OCCI, which I think will do this job. Also, in another thread in this group, I found that I have to install Oracle Client Software on the machine which will run my software. Then I came into a question: is it possible to install Oracle Client Software alone in a machine, I mean, without the entire database? If yes, how about the licenses? Do I have to have a Oracle Client License for each machine running my software or is it free for Linux?
Thanks in advance,
Fabio Fonseca
Tera Brasil LTDA
Brasil

Is there a different client that includes the Oracle Net software as stated in the OBE ? if so, where is it ?Before V11 Oracle used to package a "Client CD" & it appears it is no longer available.
http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html
scroll to bottom of URL above to see last vestige
- Oracle Database 10g Client Release 2 (10.2.0.4.0) for MAC OS X on Intel x86

A silly question about oracle.sql.timestamp and java.sql.timestamp

Hi,
I'm looking at a method that takes objects of type Object and does stuff if the object is really a java.sql.timestamp. If it is not then an error is flagged. In my case it flags an error when an object of type oracle.sql.timestamp is passed to it. Not really entirely comfortable with java (i'm still learning it), here's my stupid question :- why isn't oracle.sql.timestamp a subclass of java.sql.timestamp? Also in various books it indicates that java.sql.timestamp maps to oracle.sql.timestamp. Does that mean you have to physically do the mapping:
i.e.
java.sql.Timestamp t = new Timestamp( new oracle.sql.Timestamp( CURRENTTIMESTAMP ).timestampValue() );
or is there something else to it.
Thanks.
Harold.

The best forum for this is probably Forum Home » Java » SQLJ/JDBC
Presumably you are refering to oracle.sql.TIMESTAMP. While this is intended to (and does) correspond to java.sql.Timestamp it can't be a subclass because it needs to be a subclass of oracle.sql.Datum.

Newbie question about Oracle Parallel Server and Real Application Cluster

I am trying to find out what kind of storage system is supported by the 9i Real Applicaton cluster. I have looked at the 8i Oracle Parallel Server which requires raw partitions and therefore NAS (network attached storage) that provides an interface at the file level will not work. Does anyone know if the 9i Real Application cluster has a similar requirement for raw partitions? any suggestions of whether SAN or other technology will be suitable? pointers to more information is appreciated.
Robert

Hi Derik,
I know this is a really broad question. No, it happens all the time! Here is a similar issue:
http://blog.tuningknife.com/2008/09/26/oracle-11g-performance-issue/
+"In the end, nothing I tried could dissuade 11g from emitting the “PARSING IN CURSOR #d+” message for each insert statement. I filed a service request with Oracle Support on this issue and they ultimately referred the issue to development as a bug. Note that Support couldn’t reproduce the slowness I was seeing, but their trace files did reflect the parsing messages I observed."+
I would:
1 - Start by examining historical SQL execution plans (stats$sql_plan or dba_hist_sql_plan). Try to isolate the exact nature of the decreased performance.
Are different indexes being used? Are you geting more full-table scans?
2 - Migrate-in your old 10g CBO statistics
3 - Confirm that all init.ora parms are identical
4 - Drill into each SQL with a different execution plan . . .
Raid 5 Don't believe that crap that all RAID-5 is evil. . . .
http://www.dba-oracle.com/t_raid5_acceptable_oracle.htm
But at the same time, consider using the Oracle standard, RAID-10 . . .
Hope this helps . . .
Donald K. Burleson
Oracle Press author
Author of "Oracle Tuning: The Definitive Reference"
http://www.rampant-books.com/t_oracle_tuning_book.htm
"Time flies like an arrow; Fruit flies like a banana".

Basic questions about Oracle CEP

Hi there,
We are considering different alternatives for handling some business rules for our educational platform and I am not sure Oracle CEP would be a viable option (I have read a few things on the internet about it), let me elaborate:
We have users being trained on different devices/clients (Mobile, Websites, Offline training), all these clients are sending data to our LRS system (TinCan API). We have about 20 million new events every month (we call them Statements, according to TinCan API terminology).
We are looking for a solution where we could:
Handle up to 2.000 events per second (peak usage);
Be able to restore from disasters (is replaying all events the ONLY option? It would take ages to reply the last, say, 2 years of events);
The Derives we want to get come from different Detections, examples:
Has this particular user achieved a set of pre-defined goals (ordering does not matter )? --> So issue him BADGE A;
Has this particular user finished training 1 in the last 180 days and training 2 in the last 30 (now)? --> So issue him BADGE B;
Does that user already have BADGE A and BADGE B and have finished training 1? --> So issue him BADGE C;
Analyze only events which are now facts, in other words, events which are already in the DB, or that we can ensure will go to the DB, otherwise we can have fake BADGES;
Allow the business user (the one responsible for the educational platform) to create (with little to no IT assistance) new rules and publish them into production easily. Because we add new training every week and so, we need this to be reflect in the CEP platform. Also, we could change the rules for issuing BADGES for 2015, for example.
The architecture from 1 mile high is something like this:
Where should we “plug” Oracle CEP? Of course, the more decoupled, the better.
Any help would be really appreciated.
Cheers

Oracle Event Processing (OEP, formerly Oracle Complex Event Processing (CEP)) is a stand-alone server. It would go between your service bus (Tin Can) and the database. You might consider implementing the business rules engine with OEP. There was support added for that in OEP 12c.

Question About Oracle in general

Hi everyone...
Well, I took a course in ORACLE, SQL,PLSQL,Developer and Reports...And thinking of making the ORACLE certified exams soon.
And I'm still in the Uni. till now studying computer science...
But I'm thinking to start asking about what can I continue my study to the master's degree.
I would like to ask u what colleges can I enter that I will use ORACLE in it, I really need ur help.
And I need some universities names in USA and UK for that.
Thx in advance for ur help

what are u looking for.
Oracle Certified Professional Training if yes. go my previous post link. for Oracle Training Centre.
In If u looking for Master degree like MCA. then search in google.com
i hope u will get ur solution.

A question about Oracle RAC

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