Oracle Exadata question

Hi,
I want to know, exadata database machine is based on SUN hardware or HP hardware?
I see that HP has exclusivity of this technology:
From HP:
http://www.hp.com/hpinfo/newsroom/press/2008/080924xa.html
HP today announced that it is the exclusive systems and integration technology provider for the Oracle® Exadata Storage Server.
From SUN:
http://www.oracle.com/database/exadata.html
Oracle Exadata Storage Servers combine smart storage software from Oracle and industry-standard hardware from Sun to deliver the industry's highest database storage performance
Thank you

Exadata 1 was HP
Exadata 2 is Sun.

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RichS wrote:
I recently took the Oracle Exadata Essentials Exam. There is an error in one of the questions where you are asked to pick two correct answers yet three of the answers are correct. If the owner/maintainer of the exam would like to contact me at [email protected] I'll let you know which question it was.
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user12122325 wrote:
Hi,
I would like to know the difference between Oracle exadata and Oracle database machine. From Oracle website I can find both are used high volume database applications.I amnot sure that how come you missed the pages of both machines? Anways, ORacle EXadata(version1)was for DWH applications while Exadata Version2, The Database Machine is for OLTP systems.
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Oracle Exadata - Automatic Index

Hi Experts,
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Oracle Multitenant Questions

Hi,
I'm studying about Oracle Multitenant and I'm hoping anyone can help me.
We have a 86 TB database, with no compression and we're struggling to backup this database.
So, here is what we thought.
Compress the whole database (since it's only inserted data on the database, no updates at all) on the current version - 11.2.0.3. We're hoping to compress at a ratio of 60%, so, it would be at 36 TB, but still a huge database to backup and recover.
The next step would be migrate to 12c and setup Oracle Multitenant and divide this database into 5 instances (we can do it, because the database is divided in several mobile technologies). Let's suppose this division is equal, so, it would be around 6 TB each database, so, it would be manageable.
Questions:
- Do you think we could benefit using Oracle Multitenant?
- This would be transparent to the application? No major changes?
- How the backup would work? Can we backup each plugable database and restore it individually?
Thanks in advance

We have a 86 TB database, with no compression and we're struggling to backup this database.
Ok - so give us information about the DB:
1. How is it used
2. Is it partitioned?
3. How is it being backed up now? Are you doing complete backups or incremental ones?
We need details - not just a statement that you are 'struggling'.
Compress the whole database (since it's only inserted data on the database, no updates at all) on the current version - 11.2.0.3. We're hoping to compress at a ratio of 60%, so, it would be at 36 TB, but still a huge database to backup and recover.
We need details:
1. How is data being inserted?
2. One row at a time by multiple users?
3. Bulk inserts once a day?
Less data means there is less to backup. But incremental backups don't backup the entire database anyway so we still need to know HOW the DB is being backed up now: how often and what kind of backups.
You do NOT need to keep backing up old data that has NOT changed. Are you doing that? If so, why?
The simplest solution to solve a 'database too big to backup' problem is to change the architecture so you don't have to keep backing up data that has NOT changed. Oracle's incremental backups already do that so maybe you are NOT using them.
The next step would be migrate to 12c and setup Oracle Multitenant and divide this database into 5 instances (we can do it, because the database is divided in several mobile technologies). Let's suppose this division is equal, so, it would be around 6 TB each database, so, it would be manageable.
I disagree - the NEXT STEP should be to find the cause of your performance issue.
Based ONLY on what you posted the most likely problem is the types and frequency of the backups you are taking.
Have you licensed the partitioning option? If so you can just put each of those 'mobile technologies' into its own partition.
Again - how is data being inserted? If the new data is based on a value (e.g. a date) that distinguishes it from old data you can EASILY just put the newly inserted data into its own new partijtion by using a DAILY partitioned table.
Then you don't need to backup the old data at all. And each day you would only back up ONE partition for the previous days data.
That would be be EASIEST and MOST PERFORMANT solution to your problem.
Questions:
- Do you think we could benefit using Oracle Multitenant?
- This would be transparent to the application? No major changes?
- How the backup would work? Can we backup each plugable database and restore it individually?
#1 - impossible to say until you provide the DETAILS ask for above about
1. HOW you are performing the backups now,
2. HOW often the data changes
3. HOW the data changes (e.g. new data for today that distiguishes today's data from yesterday's data)
4. Why you are performing the backups the way you are
Multitenant isn't going to help if your data loads and architecture are such that you now have FIVE DBs to backup and they all need to be backed-up/restored together
#2 - No - multitenant is NOT 'transparent'. You will now have FIVE DBs with data in FIVE places. Your current app is written to use ONE DB. The changes could be minor or could be MAJOR.. Querying data across database links is NOT as efficient as querying data that resides on the same server.
On the other hand if a typical query only queries data from ONE of those five areas then you might get some significant performance improvements.
But you might get those same improvements simply by properly partitioning the data or using better indexes.
#3 - yes - you can backup and restore the PDBs individually. They are separate databases. However there is only ONE set of REDO log files. Those redo logs will contain changes from ALL of the PDBs,
Also there is only ONE SET of memory management to be done. In multitenant memory is managed for the entire multitenant DB.
There can be a steep learning curve to learn how to do that properly.
Multitenant is NOT a magic solution for partitioning data - that is what partitioning is for.
I suggest you find, and fix, you backup/performance/architecture issues with your current DB. If you need help doing that repost your question (and provide the DETAIL needed) in the General DB forum, the SQL and PL./SQL forum or the Backup/Recovery forums as appropriate..
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