Oracle Database export and Import compression proportion

Dear ALL,
I have oracle 8i Exp dump file of 10gigs from Production database. For import it to development database, how much spare physical space is required to have on the dev machine ?
Is there a compression proportion defind with each oracle version using exp or expdp utility ?
Kindly help me understand. I tried to google but fail to see any firm reply.
Kind Regards,
V Kumar

vikasksinha wrote:
Dear ALL,
I have oracle 8i Exp dump file of 10gigs from Production database. For import it to development database, how much spare physical space is required to have on the dev machine ?I am not sure that there is any way which can tell you that how much space you would be using for the import?
Is there a compression proportion defind with each oracle version using exp or expdp utility ?
Kindly help me understand. I tried to google but fail to see any firm reply.
The compress parameter of export doesn't work the way most think about it. Have a read,
http://oracleadmins.wordpress.com/2008/08/05/understanding-compress-parameter-in-export/
Aman....

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Query on Database Export and Import

Hi Techies,
Currently we are running our Database on Oracle 10g and SAP on4. and OS is HP UX 11.11.
We have a plan to migrate our HW from PA-RISC to Itanium and at the time of Production migration we are planning to use Export and Import method to get free space.
Our plan is as below:
We will not touch the original Production, Just restore the DB into new server.
And post restore we will create the space on new server equallent to our DB size.
Then will perform DB export from the new system to the null space
Then Import the DB into same system.
Here my queries are:
1) Is it possible to export and Import the Database from/to null space?
2) We have 2T size of DB, And good resources like 32G Ram, 12 CPUs etc. How much time can be expected to perform Export and Import?
3) What are the challenges we can expect?
4) Minimum how much of free space we can expect with this option?
Regards,
Nick Loy

So with test runs I can expect rapid speed in DB export and Import (1T/H)........If I have good system then Database export and Import gets complete within 2 hrs (Database size is 2T).
Well 1tb is at the very top of expectations here, you should be careful. I did an export/import of a 1.5tb database of an ERP system lately. We did parallel export (40 processes) / import (20 processes) using distmon, source was HP IA64, target Linux x64_64. The disks were midrange SAN storage systems on both sides. After tuning we managed to do in 6-7hrs.
But in your case, if you only have one system, this could mean you have to drop the source db first and then recreate the target db on the same disks. The creation of the 1-2tb database files alone can take up more than 1 hour , besides that you don't have an easy fallback.
If you have a test system that is comparable from size and hardware perspective, then i suggest you try a test export to get a feeling for it.
What about the Online re-org of database? What would be the best way to get free space within minimum downtime?
Theoretically you should be able to gain more or less the same amount of space doing online reorgs. The advantage is less downtime, the downside is the reorgs will be running over a longer time period and put additional load on the system.
Cheers Michael

Database Export and Import.

Hi,
I want to export and import database using .dmp file from two schema, Schema names as PRODUCTION and DEVELOPMENT.
I want to export a script of PRODUCTION schema and clean the DEVELOPMENT schema add the .dmp file in DEVELOPMENT schema.
Please suggest me the script to do this activity. I tried many ways not able to import successfully
Thanks
Sudhir

Sudhir_Meru wrote:
Hi,
I want to export and import database using .dmp file from two schema, Schema names as PRODUCTION and DEVELOPMENT.
I want to export a script of PRODUCTION schema and clean the DEVELOPMENT schema add the .dmp file in DEVELOPMENT schema.
Please suggest me the script to do this activity. I tried many ways not able to import successfully
Thanks
SudhirThe use of export and import for your un-named version of Oracle are well documented in the Utilities Manual, located at tahiti.oracle.com
How to script it is dependent on your un-named operating system.
"not able to import successfully" conveys no useful information. What have you tried? What were the results. Actual commands and actual error messages are most useful. Copy and paste are your friends.

Is it possible to export and import jsf page and application module?

Hi,
I want to export a application module and then import it to another application,so deos jsf pages.If I can do this ,then my team could do the diffent work at the same time.one group response for data model then commit as application module,one group for page create and edit and so on .Who has any good idea?
Thanks advance
lixinzhu
2007/09/19

hi,frank
thank you.
You know a page include a .jspx file,a page definition file and depend faces-config.xml,faces-config.oxd_faces and other I don't know information,so if i only put the first two file into cvs,but how can i get other information in the last two file?When I get the first two file and needed information in the other file,how can i merge these into new project and let jdeveloper "reconize it"?Applicaion is more complex,it not only depend its self java class,xml and many entity object and view object,how to handle the "export" and "import" process?Just like oracle form,only a fmb is enough,database object only need to "put into database","export" and "import" are very simple,so i need jdeveloper to supply these "import" and "export" function.I'm not familar with cvs,does it can know object dependency like application module?if it can,how to let jdev "reconize" imported in object?
lixinzhu
2007/09/19

Export and import Oracle 10G database

Hello all
Can anyone tell me once for all how can i backup oracle 10G database and restore it in other computer (export and import)
thanks alot
Ron

Do you can access to metalink?
If not, I copy an paste this doc's....
Doc ID: Note:10767.1
Subject: How to perform FULL System Export/Imports
Type: BULLETIN
Status: PUBLISHED
Content Type: TEXT/X-HTML
Creation Date: 18-APR-1994
Last Revision Date: 30-AUG-2002
Purpose
This article highlights some important points to consider when performing
a Full System Export and Import.
Scope and Application
It is intended to assist users performing FULL System Exports and Imports.
A Full System Export and Import is a useful way to replicate or clean up
a database. Please note the following guidelines when performing a Full
System Export and Import:
1. When performing the import, ensure you are pointing at the correct
instance. Always check values for the SID and two task driver before
proceeding.
*Note: On Unix systems, just entering a sub-shell, such as using
C-shell, can change the database that the import would work
against.
2. When possible, it is advisable to take a physical copy of the
exported database and the database you intend to import into before
starting the import. This ensures any mistakes are reversible.
3. NEVER run a FULL SYSTEM IMPORT on a machine that has more than one
database UNLESS you are 100% sure all tablespaces have been
pre-created. A full import will create any undefined tablespaces
using the same datafile names as the exported database. There are
situations where this is very dangerous:
-> If the datafiles belong to ANY other database, they will be
CORRUPTED. This is especially true if the exported database is
on the same machine, because its datafiles will be re-used by
the database you are importing into.
-> If the datafiles have names that clash with existing operating
system files.
4. When exporting, it is advisable to also produce a report showing
information you may need before / after the import:
-> List the tablespaces and datafiles
-> List the rollback segments
-> List a count, by user, of each object type such as tables,
indexes, etc.
This enables you to ensure that tablespaces have been pre-created
and to check the success of the import after it is complete.
5. If you are creating a completely new database from an export, remember
to create an extra rollback segment in SYSTEM, and make this available
in the init.ora file before proceeding with the import.
6. There are some versions of export that do not retain sequence numbers
correctly. It is advisable to select next_value for each sequence
after the export so that these can be checked after import.
Following these guidelines will help you to avoid major problems.
Doc ID: Note:174226.1
Subject: How To Copy an Oracle Database To Another Machine
Type: HOWTO
Status: PUBLISHED
Content Type: TEXT/X-HTML
Creation Date: 12-OCT-2001
Last Revision Date: 01-OCT-2003
goal: How to copy an Oracle database to another machine
fact: Oracle Server - Enterprise Edition
fix:
Pre-requisites: The copy is between 2 machines, both have to be on the same OS
and have to have exactly the same database version installed.
1. Make sure the database you want to copy was closed with a SHUTDOWN IMMEDIATE,
SHUTDOWN NORMAL or SHUTDOWN TRANSACTIONAL.
2. Copy init.ora and control files to create instance and be able to go in
mount mode. Check the init.ora for the locations where the controlfiles have
to be, if those locations are not valid on the machine put the control files on
different places and adjust the init.ora accordingly.
3.a. Copy the datafiles (all of them).
b. Copy the redo-logfiles (all of them).
4.a. (Unix only) Set the environment variables:
ORACLE_SID - set to the database name you wish to create
ORACLE_HOME - set to full pathname of the Oracle system home directory
PATH - needs to include $ORACLE_HOME/bin
b. (NT/2000 only) Do 'set ORACLE_SID=<SID>'
Use oradim to create the service for the instance. For more information
on oradim please refer to (the part that refers to creating a new instance):
Note:68720.1 Creating a new 7.3, 8.0, 8.1 Instance/Database
5. Use servermanager (check the name to use for your version of oracle) or
sqlplus (version 9i and above) to startup the database in mount mode.
Do
CONNECT INTERNAL/<PASSWORD>
then
STARTUP MOUNT
Then do a rename of the copied datafiles if they are not in the same path as on
the other machine. For all the files that are in the result of the query:
SELECT NAME FROM V$DATAFILE;
do
ALTER DATABASE RENAME FILE '<oldfullpath>\<filename>' to <
newfullpath>\<filename>';
6. Query the datadictionary for the old location of the redolog files using:
SELECT MEMBER FROM V$LOGFILE;
If the new place is not the same as the old do:
ALTER DATABASE RENAME FILE '<oldfullpath>\<redologfilename>' to &
lt;newfullpath>\<redologfilename>';
7. Now open the database:
ALTER DATBASE OPEN;
******************************************************************

Could I export and import my oracle database via Stored Procedure???

Hi all,
I need to export my database using stored procedure, the stored procedure will be called by java application and it works well
Now I still get the "BIG QUESTION", could I export and import database using stored procedure???
Really thanks for the response.
Regards,
Kahlil

Hi,
I think you can use DBMS_DATAPUMP (10.1+), see [DBMS_DATAPUMP|http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28419/d_datpmp.htm#i1007277], for examples see [http://www.psoug.org/reference/dbms_datapump.html]
Regards,

Steps to export and import oracle 10g databse from AIX to AIX and LINUX

Hi,
I need the steps to export the oracle 10g database from AIX server to AIX server and LINUX server.
Please give me all the steps as this is my first exort an import activity.
thanks,

For 10g there exist two ways to do so.
1) Regular exp/imp.
2) Data pump expdp/impdp.
As this is your first export and import activity, relevant concept understanding is mandatory for you.
Documentation Link
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14215/toc.htm
Read the chapters 1,2,3 (Data pump expdp/impdp) and 19 (regular exp/imp). Good luck.

Export and Import in Oracle

I need to export users with tables and data from Oracle 8.0.4 and import into Oracle 8.1.7.
But the condition is that we need to retain the Japanese characters.
I did this using simple export and import functions but Japanese characters were imported as Junk.
Can somebody tell me what is the clean way of exporting and importing such that Japanese charaters are not converted to Junk.

You must set the correct characterset before exporting and importing (I don't know which characterset is correct for you, but choosing the same characterset as the characterset of your database should work).
Use NLS_LANG environment variable to do this,
NLS_LANG=<LANGUAGE>_<TERRITORY>.<CHARACTERSET>. On UNIX if NLS_LANG is not set explicitly, it defaults to AMERICAN_AMERICA.US7ASCII, that means all special characters cannot be translated.
On Windows NLS_LANG is set at installation time, it corresponds to the settings of Windows itself.

Please provide me unix shell script (export and import of database schema)

please i am new in unix
\please give me sample unix shell script (export and import of database schema)

please i am new in unix
\please give me sample unix shell script (export and import of database schema)Instead of providing you the readymade unix shell script for your requirement, I will give you the hints to prepare the same at your own.
Create a file with .sh extension.
# Specify and set all required Environment variables.
ORACLE_HOME, PATH, NLS_LANG, etc.,
# Use the export command with all clauses
export scott/tiger@orcl file=scott.dmp log=scott_emp.log
# Compress it.
compress scott.dmp
Refer any unix/linux documents for scripting basics.
http://www.bijoos.com/ora7/oracle_unix.htm
Regards,
Sabdar Syed.

Step to export and import oracle 10g on AIX,LINUX

Hi ,
Plase any one can give nme the steps to be followed to export and import oracle 10g database from AIX to AIX and LINUX also.
Waiting for your response.
Thanks..

You dont have to follow any special steps, Export and Import are same on all OS's.

Guide me for exporting and importing data from oracle 10g to oracle 9i

I have been trying export and import options in oracle but m not very clear about the procedure..
Also when i am logging in as Scott/tiger i am facing an error
ORA 1542 - tablespace 'USER' is offline and cannot allocate space in it.how to resolve it

Hello,
I see two questions.
ORA 1542 - tablespace 'USER' is offline and cannot allocate space in it.how to resolve it About the error ORA-01542 you have to bring the Tablespace USERS online:
http://www.error-code.org.uk/view.asp?e=ORACLE-ORA-01542
If you cannot bring it online you may have to Recover it first.
I have been trying export and import options in oracle but m not very clear about the procedure..About the Export in 10g and Import in 9i (9.2 or 9.0.1 ?), you have to export with the Export utility of the Target Database (the lowest Database version here: 9.0.1 or 9.2) then, you have to Import to the Target Database using its Import utility (in 9.0.1 or 9.2).
The following Note of MOS may guide you:
Compatibility Matrix for Export And Import Between Different Oracle Versions [Video] [ID 132904.1]
NB: You cannot use here the DATAPUMP.
Hope this help.
Best regards,
Jean-Valentin

How to export and import database from one laptop to another?

hi,
plz anyone help me to export and import one of my user in the database to another laptop.....
i hav absoulutely no knowledge in doing this, plz some one help to do it from scrap...
thanks in advance for ur kind help

what's the oracle version on Source and Target Database release version? Take a look at the below links.
[http://wiki.oracle.com/page/Oracle+export+and+import+]
[Import_Export_FAQ|http://www.orafaq.com/wiki/Import_Export_FAQ]
Export
[Oracle Export Utility|http://www.psoug.org/reference/export.html]
[Oracle Import Utility|http://www.psoug.org/reference/import.html]
HTH
Anantha

Calling Oracle Export and Import in java

Hi,
I am trying to call oracle export and import utilites in my java application,
can anyone help me that how can i do this, plz consider the case as this is a part of my project..
Regards
Ashish

You should just be able to call the "imp" and "exp" executables ($ORACLE_HOME/bin) using the Runtime class. You can setup the various parameters for export / import in a parameter file.
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
http://www.orafaq.com/faqiexp.htm

Export and Import of Portal Users (UME database only)

Hi
What is the most efficient way to export all Portal user that are stored in Portal UME database so that it can be imported to another Portal installation and be used..
Thanks in Advance
Ananda

Hi,
SAP User Administration is the standard way to export and import users in the portal. Using the export functionality, all the user information will get exported, including the roles and groups assigned:
[User]
uid=userid
last_name=Lastname
first_name=Tobias
language=en
accessibility=0
role=pcd:portal_content/com.sap.portal.xxx;
group=Administrators;
If you only want to export the user data without the roles and groups, you'll have to delete these lines.
SAP Help: http://help.sap.com/saphelp_nw04/helpdata/en/70/9be23d44d48e5be10000000a114084/frameset.htm
Export Format: http://help.sap.com/saphelp_nw04/helpdata/en/ae/7cdf3dffadd95ee10000000a114084/frameset.htm
SDN Article: https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f02e3e37-5ee3-2910-129d-967aef3fa386
br,
Tobias

Calling oracle export and import utilities in java

Hi,
can someone help me, i have to call oracle export and import utilities through my java application, can anyone guide me, how i can do it..
Thansks
Ashish

Hi,
can someone help me, i have to call oracle export and
import utilities through my java application, can
anyone guide me, how i can do it..You mean the command line ones? Use Runtime.exec();

Oracle Database export and Import compression proportion

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