Database Migration Help/Suggestions Needed Plzzz Share You Views
Dear Sirs
Please help me in my database migration from old database to new database, as we have developed new application and want to switch from old but with using same data(not same database, instead with new and different structure) from old database so
what i did are bellow thing ;
1. Created new database with different database structure from old
2. Used export command to export all data and restore it to one dummy database with (database structure as old database)
3. created "insert into (select .......)" scripts to fetch out the data and put it into new database (with different structure)
4.i verified and tested that data and did cross checking with old data.
Now my problem
1..Now my problem is that since we took backup on Dec 2010 and did all these activity and with that old database was operational so now more data is added from Dec 2010 till now(17/102011) how to take backup of that.
2...And sir if somehow we able to do(till then i don’t know how) that then doing this whole procedure will again take few more days then we will again be trailing becoz old database is operational and will be until we do not switch to new with complete data.
how to solve this problem of migration becz i cant put my old database down also for more then 4-5 hours to switch to new application
Total database is approx: 60 GB
Kindly help or give your expert suggestions as i am in great need of solution to my this problem
Thanks
839880 wrote:
Dear Sirs
Please help me in my database migration from old database to new database, as we have developed new application and want to switch from old but with using same data(not same database, instead with new and different structure) from old database so
what i did are bellow thing ;
1. Created new database with different database structure from old
2. Used export command to export all data and restore it to one dummy database with (database structure as old database)
3. created "insert into (select .......)" scripts to fetch out the data and put it into new database (with different structure)
4.i verified and tested that data and did cross checking with old data.
Now my problem
1..Now my problem is that since we took backup on Dec 2010 and did all these activity and with that old database was operational so now more data is added from Dec 2010 till now(17/102011) how to take backup of that.
2...And sir if somehow we able to do(till then i don’t know how) that then doing this whole procedure will again take few more days then we will again be trailing becoz old database is operational and will be until we do not switch to new with complete data.
how to solve this problem of migration becz i cant put my old database down also for more then 4-5 hours to switch to new application
Total database is approx: 60 GB
Kindly help or give your expert suggestions as i am in great need of solution to my this problem
ThanksWhat is the old database? WHat is the new databse? I'm assuming they are both Oracle but different versions? If so, what versions? Have you considered using a db link from the new to the old and INSERT INTO ... SELECT ... FROM OLD_TABLE@DBLINK?
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PostgreSQL Database migration help
I have table called TEST in postgreSQL database with some data and I want to migrate this to oracle. I am a newbie to oracle database and I dont know which is the suitable data types in oracle for my table. Below are the my table information. Can any one please help me with this scenario. This would be the greate help to me.
CREATE TABLE TEST(id integer,data_tab text[])
insert into TEST (1,'{DATA1,DATA2}')
insert into TEST (2,'{DATA3,DATA4}')
insert into TEST (3,'{DATA5,DATA6}')
I am using Oracle 10.2 version for migration.
Thanks891903 wrote:
I am not worry about the normalizations rules at this point of time, I just need the solution. Please help me out.Neither now nor in the future! :-)
The Postgre text data type is defined as unlimited
http://www.postgresql.org/docs/8.3/interactive/datatype-character.html
The closest I would suggest you can come to this is to use a CLOB data type in Oracle which can hold 4GB of data.
I would suggest if you need more than 4GB of data in a single column of a single row, you might want to revisit the idea of normalisation!
Seriously though, if you are doing a migration, don't expect things to work in the same way on Oracle. The way Oracle works is different in a great number of ways to PostgreSQL. Don't expect that if you faithfully copy every table and index that your system will perform and operate exactly as it did previously. You are going to need to refactor some things and you're going to need to make changes here and there. If there are glaring design issues, it might be a time to approach correcting them.
Here's a link to the Oracle docs
http://www.oracle.com/pls/db111/homepage
I'd familiarise yourself with the concepts guide as a start...
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/toc.htm
HTH
David -
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Thanks in advanceso, i was assuming that i will add one mbx server in main site and another mbx server in branch site and make it HA via DAG --- is it possible
Next option
i can go for typical installation of ( CAS , HUB MBX server (all three in in one server) in main site and another three server roles (aal in one server) of Branch office and make the mailbox for HA -- will it possible
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If your bandwidth and latency between sites you
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give you only HA for mailbox not HUB/CAS.
After you installed the Mailbox role on the branch server, You have to set autodiscover site affinity.
http://technet.microsoft.com/en-us/library/aa998575(v=exchg.141).aspx
It is little bit complicated if you want HA over 2 sites, It depends on the bandwidth and latency between sites. If
you install all the 3 roles and configure the branch site as part of the main branch ADsite you can have highly availability for CAS by a load balancer and this is not a small change. i.e. add the branch server to the Main office CAS
Array and load balance.
http://channel9.msdn.com/Events/TechEd/NorthAmerica/2011/EXL401
If the branch site is not Internet facing, Please check this.
http://technet.microsoft.com/en-us/library/bb310763(v=exchg.141).aspx
adding an MBX/HUB/CAS in your branch office and buy a hardware load balancer of your budget. List
of MS supported HLBs here. Configure the load balancer to according to your bandwidth and latency
between sites.
Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.
Couple of comments please!
Autodiscover sitescope is a function of CAS not mailbox. This is written into AD when the CAS role is installed.
Why are you splitting all the roles out like this? The recommendation in 2010 and 2013 is to multirole whenever possible. There are valid reasons for splitting, I just want to know what's driving you to this.
The preferred DC switch is just for the current PowerShell session IIRC. I'll check up on that though.
I'd ask you to look at the design examples on TechNet
http://technet.microsoft.com/en-us/library/dd979781(v=exchg.141).aspx
In all of this, you have to consider what the impact of a failed WAN link(s) will do. If you have a single DAG spanning both locations, and the WAN goes down then in the case of a single DAG spanned between both of the sites some users will not have
access to a local mailbox server. The cluster service terminates and so does the Exchange store. That is by design.
Cheers,
Rhoderick
Microsoft Senior Exchange PFE
Blog:
http://blogs.technet.com/rmilne
Twitter: LinkedIn:
Facebook:
XING:
Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose. -
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http://technet.microsoft.com/en-au/library/dn613834.aspx
http://blogs.technet.com/b/askcore/archive/2013/03/14/installing-volume-activation-services-role-in-windows-server-2012-to-setup-a-kms-host.aspx
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http://technet.microsoft.com/en-us/library/hh824976.aspx
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if someone counld assist me PERSONALLY hands on that would be very much appreciated
i just need to delete ALL old files the whole firefox
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ive used firefox on and off 4 ever
i like it over IE like 101% chrome is okay but not y choice
firefox in my 46 year old eyes RULES!
so if someone is willing to help me id love that
im thinking ive deleted some file of very great importance
PLUS i hate the Flash & Jave & Chrome errors that pop up
PLUS
statse.webtrendslive.com : server does not support RFC 5746, see CVE-2009-3555
support.mozilla.com : server does not support RFC 5746, see CVE-2009-3555
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