Oracle for large database + configuration

Hi
I have some historical data for Stocks and Options that I want to save into an Oracle database. Currently I have about 190G of data and expect to grow about 5G per month. I have not completely thought about how to organize the tables. It is possible that there might just be one table which might be larger than the hard disk I have.
I am planning to put this on a DELL box, running Windows 2000. Here is the configuration.
Intel Xeon 2.4GHz, 2G SDRAM, with 3 146G SCSI harddrive with PERC3 SCSI controller. This machine roughly costs 7000$.
Is there any reason that this wont work. Will Oracle be able to organize one database across multiple disks? How about Tables? Can Tables span multiple disks.
All this data is going to be read only.
My other cheaper choice is
Intel box running P3, 2G RAM, 2 200G IDE drives. My questions for this are/ Will this configuration work?
Also, for this kind of a database what kind of total disk space should I budget for?
thanks
Venkat

The Server Manager was deprecated in 9i. Instead of using it you have to use the SQL*Plus. Do you have another JRE installed ?
How to create a database manually in 9i
Administrator's Guide for Windows Contents / Search / Index / PDF
http://download-east.oracle.com/docs/cd/B10501_01/win.920/a95491.pdf
Joel Pérez

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RMAN Tips for Large Databases

Hi Friends,
I'm actually starting administering a large Database 10.2.0.1.0 on Windows Server.
Do you guys have Tips or Docs saying the best practices for large Databases? I mean large as 2TB of data.
I'm good administering small and medium DBs, but some of them just got bigger and bigger!!!
Tks a lot

I would like to mention below links :
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/partconc.htm
http://download.oracle.com/docs/cd/B28359_01/server.111/b32024/vldb_backup.htm
For couple of good advices and considerations for RMAN VLDB:
http://sosdba.wordpress.com/2011/02/10/oracle-backup-and-recovery-for-a-vldb-very-large-database/
Google "vldb AND RMAN in oracle"
Regards
Girish Sharma

Sql Server Management Assistant (SSMA) Oracle okay for large database migrations?

All:
We don't have much experience with the SSMA (Oracle) tool and need some advice from those of you familiar with it. We must migrate an Oracle 11.2.0.3.0 database to SQL Server 2014. The Oracle database consists of approximately 25,000 tables and 30,000
views and related indices. The database is approximately 2.3 TB in size.
Is this do-able using the latest version of SSMA-Oracle? If so, how much horsepower would you throw at this to get it done?
Any other gotchas and advice appreciated.
Kindest Regards,
Bill
Bill Davidson

Hi
Bill,
SSMA supports migrating large database of Oracle. To migrate Oracle database to SQL Server 2014, you could use the latest version:
Microsoft SQL Server Migration Assistant v6.0 for Oracle. Before the migration, you should pay attention to the points below.
1.The account that is used to connect to the Oracle database must have at least CONNECT permissions. This enables SSMA to obtain metadata from schemas owned by the connecting user. To obtain metadata for objects in other schemas and then convert objects
in those schemas, the account must have the following permissions: CREATE ANY PROCEDURE, EXECUTE ANY PROCEDURE, SELECT ANY TABLE, SELECT ANY SEQUENCE, CREATE ANY TYPE, CREATE ANY TRIGGER, SELECT ANY DICTIONARY.
2.Metadata about the Oracle database is not automatically refreshed. The metadata in Oracle Metadata Explorer is a snapshot of the metadata when you first connected, or the last time that you manually refreshed metadata. You can manually update metadata
for all schemas, a single schema, or individual database objects. For more information about the process, please refer to the similar article:
https://msdn.microsoft.com/en-us/library/hh313203(v=sql.110).
3.The account that is used to connect to SQL Server requires different permissions depending on the actions that the account performs as the following:
• To convert Oracle objects to Transact-SQL syntax, to update metadata from SQL Server, or to save converted syntax to scripts, the account must have permission to log on to the instance of SQL Server.
• To load database objects into SQL Server, the account must be a member of the sysadmin server role. This is required to install CLR assemblies.
• To migrate data to SQL Server, the account must be a member of the sysadmin server role. This is required to run the SQL Server Agent data migration packages.
• To run the code that is generated by SSMA, the account must have Execute permissions for all user-defined functions in the ssma_oracle schema of the target database. These functions provide equivalent functionality of Oracle system functions, and
are used by converted objects.
• If the account that is used to connect to SQL Server is to perform all migration tasks, the account must be a member of the sysadmin server role.
For more information about the process, please refer to the similar article:
https://msdn.microsoft.com/en-us/library/hh313158(v=sql.110)
4.Metadata about SQL Server databases is not automatically updated. The metadata in SQL Server Metadata Explorer is a snapshot of the metadata when you first connected to SQL Server, or the last time that you manually updated metadata. You can manually update
metadata for all databases, or for any single database or database object.
5.If the engine being used is Server Side Data Migration Engine, then, before you can migrate data, you must install the SSMA for Oracle Extension Pack and the Oracle providers on the computer that is running SSMA. The SQL Server Agent service must also
be running. For more information about how to install the extension pack, see Installing Server Components (OracleToSQL). And when SQL Express edition is used as the target database, only client side data migration is allowed and server side data migration
is not supported. For more information about the process, please refer to the similar article:
https://msdn.microsoft.com/en-us/library/hh313202(v=sql.110)
For how to migrate Oracle Databases to SQL Server, please refer to the similar article:
https://msdn.microsoft.com/en-us/library/hh313159(v=sql.110).aspx
Regards,
Michelle Li

Oracle 9.10 Database Configuration Assistant not working

I have installed Oracle 9i Enterprise Edition on Windows XP, Pentium 4 and everything installed successfully but after installation, when I click on Database Configuration Assistant, nothing happened, no error displayed, mouse flashed for a while as loading something then came normal. Any idea please ?
Even Database Migration Assistant also not working.
I also could not find svrmgr utility in Oracle 9i to create a new database.
Best Regards,
Luqman

The Server Manager was deprecated in 9i. Instead of using it you have to use the SQL*Plus. Do you have another JRE installed ?
How to create a database manually in 9i
Administrator's Guide for Windows Contents / Search / Index / PDF
http://download-east.oracle.com/docs/cd/B10501_01/win.920/a95491.pdf
Joel Pérez

SAP EHP Update for Large Database

Dear Experts,
We are planning for the SAP EHP7 update for our system. Please find the system details below
Source system: SAP ERP6.0
OS: AIX
DB: Oracle 11.2.0.3
Target System: SAP ERP6.0 EHP7
OS: AIX
DB: 11.2.0.3
RAM: 32 GB
The main concern over here is the DB size. It is approximately 3TB. I have already gone through forums and notes it is mentioned the DB size is not having any impact on the SAP EHP update using SUM. However am stil thinking it will have the impact in the downtime phase.
Please advise on this.
Regards,
Raja. G

Hi Raja,
The main concern over here is the DB size. It is approximately 3TB. I have already gone through forums and notes it is mentioned the DB size is not having any impact on the SAP EHP update using SUM. However am stil thinking it will have the impact in the downtime phase.
Although 3TB DB size may not have direct impact on the upgrade process, downtime of the system may vary with larger database size.
Points to consider
1) DB backup before entering into downtime phase
2) Number of Programs & Tables stored in the database. ICNV Table conversions and XPRA execution will be dependent on these parameters.
Hope this helps.
Regards,
Deepak Kori

Changing Language for the Database Configuration Assistant, Net Manager,etc

Help! I've downloaded and installed Oracle 10g successfully. To my dismay, the Database Configuration Assistant, Net Manager, Net Configuration Assistant display German when I click on them instead of English. All my other documentation is perfectly in English!
BR,
==ManP

Did you ever get this resolved? I am having the same problem except with Chinese, not German

DR startegy for Large database

Hi All,
We have a 30TB database for which we need to design a backup strategy.( Oracle 11gR1 SE, 2 Node RAC with ASM)
Client needs a DR site for the database and from the DR site we will be running tape backup.
The main constraint we are facing here are size of DB which will grow till 50 TB in future and another is we are running in Oracle standard edition.
Taking a full RMAN backup to a SAN box will take around 1 week for us for a DB size of 30TB.
Options for us:
1. Create a manual standby and apply archive logs( We cant use Dataguard as we are in SE edition)
2. Storage level replication ( Using HP Continous access)
3. Use thrid party tools such as Shareplex,Golden gate, DBVisit etc
Which one will be the best option here with respect to cost and time or do we have any other option better than this.
We cant upgrade to Oracle EE edition as of now since we need to meet the project deadline for Client. We are migrating legacy data to production now and this will be interrupted if we go for a upgrade.
Thanks in advance.
Arun
Edited by: user12107367 on Feb 26, 2011 7:47 AM
Modified the heading from Backup to DR

Arun,
Yes this limitation about BCT is problematic in SE but after all if everything was included in SE who would pay the EE licence :) ?.
Only good thing if BCT is not in use is that RMAN checks the whole database for corruption even if the backup is an incremental one. There is no miraculous "full Oracle" solution if your backups are so slow but as you mentioned the manual standby with delayed periodic applications of the archives is possible. It's up to you to evaluate if if works in your case though : how many archive log files will you daily generate and how long will it take to apply them on your environment ?
(notice about Golden Gate it's no more a third party tool : it's now an Oracle tool and it is clearly introduced as a recommended replacement for Streams)
Best regards
Phil

Backups for large databases

I am wondering how people do restores of very large DB's. Ours is not that large yet bit will grow to the point where exports and imports are not feasible. The data only changes periodically and as it is a web application,cold backups are not really an option. We don't run in archived log mode because of the static nature of the data. Any suggestions?

put the read only tables in a read only tablespace and slowly changing tables to another tablespace. the most frequent ones in another tablespace.
take transportable tablespace export of the frequently changing tablespace daily and slowly changing 2-3 times a week (depending on your site specifics). this involves nothing but a metadata export of the datadictionary info of the tablespaces exported and an OS level copy of the datafiles of those tablespaces.
this is the best way for you to backup/recover. check out oracle documentation or this website for transportable tablespaces.
I guess it comes to a point where you have to make a tradeoff between performance and recoverability. In my opinion always take recoverability over performance.
If the periodic change of data is nothing but a bulk data load then after the dataload take a backup of a database. having multiple recovery scenarios is the best way for recovery.

Oracle for genetic databases: implementations, overviews?

I'm interested in obtaining information on Oracle
implementations incorporating large volumes of information on &
including: genetic experiments (i.e., gene codes or
identifiers), optics (wavelengths, intensities, etc.) &
increases in cell growth. I'm going to be interested in Oracle
datamining &/or datawarehousing in order to get information out
of this that is not otherwise going to be obvious by looking at
it. Is there a general overview of other implementations of
Oracle (8i or 9i?) like this in the field? I'd be very grateful
for info...thanks,
Noel Whelan

Kevin,
I would definitely focus on 9i as we've added many new features that are relevant for bioinformatics. NEW in 9i:
- Ability to store and search XML data types
- Data mining embedded natively within database (Naive Bayes and Association Rules in 9i, Clustering and Decision Trees (using adaptive Bayes networks) in 9iR2)
- UPSERT (facility to fast update a record or insert a new record). Great for updating life science data.
- IFS forcollaboration and centralized storage of external data types such as powerpoint, word, etc. docs. Users can drag & drop files into IFS for storage, management and access within the database.
- Table Functions to allow piplined "C" procedures for performance improvements of compute intensive operations.
Many useful features are already in 8i (see below) but have been updated or now can be integrated with new 9i features:
- Gateways for native access to external data sources
- External tables for ability to make an external table appear equivalent to a native Oracle table so you can query and perform operations on.
- Oracle Text for efficient text searches
- Oracle InterMedia for storage of image, video etc. data types and ability to perform basic queries and operations on them.
- Oracle Workflow for automating processes within the database. E.g Upload data from GenBank, Mine data to find "targets" and distribute reports to appropriate scientists.
- Oracle Portal to facilitate collaboration and set up company "My.company.com" standard portals with personalized information, reports, etc.
- Oracle Thesaurus so you can define multiple synonyms for a word, gene or pathogen etc.
- Extensible indexing to enable efficient search and retrieval functions for complex domains such as text, spatial, image, chemistry, proteomics and genomics
But, bottom line, I'd jump to the new release. Check OTN and Oracle University for technical information and training materials.
cb
Dear Charles Berger,
How can I see the Internal LInks that you posted?
They look useful as I am a student in bioinformatics currently taking an intro course to database systems and will be implementing a db in Oracle8i.
Also, would you suggest I try to work with 9i and skip 8i. THe problem I have is that all the books and documentation I have is for 8i. Is 8i already history?
Kevin
[email protected]

BRTOOLS with tape continuation for large database

Hello,
I have a R/3 database of 2TB which needs to be copied onto a new staging server for upgrade.
The problem I am facing is that I dont have any space in the SAN(storage) for taking the backup on disk.
So the only option I have is to take backups on tape.
Even tried backup with compress mode on tape but ended up with CPIO error for handling larger than 2GB files(note 20577).
And Since the database size is 2TB and the tapes I have hold 800GB I would have to use multiple tapes.
Since my some of the files in the database like *DATA_1 range between 6GB to 10GB CPIO cannot
handle files larger than 2GB as per note 20577.
So I had to change the parameter tape_copy_cmd = dd in init<sid>.sap.
But DD will end once the end of tape is reached with a error message thereby failing my backup.
Please help me get out of this situation.
Regards,
Guru

Hi,
Please check the 'Sequential backup' section in the backup guide. If its not possible to use a tape with a big capacity, you could use this method instead.
You would need to add/ modify the following parameter in init<sid>.ora :
1. volume_backup
2. tape_address
3.tape_address_rew
4.exec_parallel
You'll find more info about these parameters in www.help.sap.com and in the backup guide itself.
Br,
Javier

Remove fragmentation for large database

I have two databases each with page file size close to 80GB, Index 4GB. Average Clustering Ratio on
them is close 0.50. I am in a dillema how to defragment these databases. I have two options -
1> Export level0 data, clear all data (using Reset), Reimport level0 data and fired a calc all.
2> Export all data. clear all data (using Reset), Reimport all data.
Here is the situation.
-> Export all data is running for 19 hours. Hence I could not continue with option 2.
-> Option 1 works fine, but when I fire the calc after loading level0 data, Average clustering ratio
goes back to 0.50. So the database is fragmented again. I am back to the point where I had started.
How do you guys suggest to handle this situation?
This is version Essabse 7. ( yeah, it is old).

The below old thread seems to be worth reading:
[Thread: Essbase Defragmentation|http://forums.oracle.com/forums/thread.jspa?threadID=713717&tstart=0]
Cheers,
-Natesh

Selection Interface for large database

I am looking for a working example of a CF selection field that fills or builds a name list as you type. The database has about 600,000 names with 400 new people being added each day. I am looking for a smart tool that watches you type and brings down a name list as you go. In the list the user needs to see the name and other identifying information like DOB and phone number. User clicks the row and the persons recorded is located. I think I have a good understanding the CFC side of this.
If you type fast the tool waits for a second. "Sounds like" support would also be nice.
Thanks for any ideas?

You mean AutoSuggest? See this link:
http://forta.com/blog/index.cfm/2007/5/31/ColdFusion-Ajax-Tutorial-1-AutoSuggest
You might want to adjust the code to work on official version because the example was built for beta version.

Brbackup for large database

Dear All,
In our PRD Server the DB size more 800 GB.Now we using the Brtools for backup.The tape size is 400/800 GB ultrium 3.In future the DB Size may increase .How to take the backup .Is there any way to take backup in to split up backup.
Kindly Give the solution.
Regards
guna

Hello,
if your backup is to big for one tape, you may do one of the following:
Use more than one tape drive. You may specify them in your init<SI>.sap file.
Use one drive, and manually enter another tape as soon as the first is full. You probably don't want to, though...
Use one drive and a loader that will automatically change tapes.
So most probably you will have to pay for additional hardware.
regards

Kernel parameter for large concurrent connections database.

Hi,
Does any one have suggestion about kernel parameters we have to modify for large concurrent connections database (about 20000 concurrent connections) ? We would like to use Sun M8000 as our database server. Oracle installation guide indicated many parameters and values, but it seems ok for general database, not the one we need. Please somebody help us. Thanks !

I certainly don't have any idea where the 150G memory usage for 20000 concurrent users come about. That's 7.5MB per user session.
The session memory usage is depends on Oracle version, OS , Database configuration and application behavior etc..
From following query we can tell, average session memory usage is around 1.5M in normal usage on 10g linux platform.
It could go up to 20-30M if user session doing large data manipulation.
SYS@test > l
1   select value, n.name|| '('||s.statistic#||')' , sid
2    from v$sesstat s , v$statname n
3    where s.statistic# = n.statistic#
4    and n.name like '%ga memory%'
5*   order by sid
SYS@azerity > /
     VALUE N.NAME||'('||S.STATISTIC#||')'        SID
    486792 session pga memory max(26)             66
    486792 session pga memory(25)                 66
    225184 session uga memory(20)                 66
    225184 session uga memory max(21)             66
    225184 session uga memory max(21)             70
    486792 session pga memory max(26)             70
    486792 session pga memory(25)                 70
    225184 session uga memory(20)                 70
    225184 session uga memory(20)                 72
    486792 session pga memory max(26)             72
    225184 session uga memory max(21)             72
    486792 session pga memory(25)                 72
    486792 session pga memory max(26)             74
    225184 session uga memory(20)                 74
    486792 session pga memory(25)                 74
    225184 session uga memory max(21)             74
......Aggregate by SID
1   select sum(value),sid
2    from v$sesstat s , v$statname n
3    where s.statistic# = n.statistic#
4    and n.name like '%ga memory%'
5    group by sid
6*   order by sid
SYS@test > /
SUM(VALUE)        SID
   1423952         66
   1423952         70
   1423952         72
   1423952         74
   1423952         75
   1423952         77
   1423952         87
   1423952        101
   2733648        104
   1423952        207
23723248        209
23723248        210
   1293136        215
   7370320        216
.........

Database configuration

hi am trying to configure my database in dbca am geting the error
could not find appropriate listener for this database.
configuration db control requires database to be registered with atleast one listener

ok i have recreate my listner is
# listener.ora Network Configuration File: C:\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = smsdev)
(ORACLE_HOME = C:\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = MADIMAD-B533821)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCPS)(HOST = MADIMAD-B533821)(PORT = 2484))
ADR_BASE_LISTENER = C:
so how do i register my listener with the database, i still cannot configure my database in dbca am geting the error that the listner must be register with the database

Oracle for large database + configuration

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