Unable to migrate table, character set from WE8MSWIN1252 to AL32UTF8

Hi,
On our source db the character set is AL32UTF8
On our own db, we used the default character set of WE8MSWIN1252 .
When migrating one of the table, we get an error of this: ORA-29275: partial multibyte character
So in to alter our character set from WE8MSWIN1252 to AL32UTF8, we get this error:
ALTER DATABASE CHARACTER SET AL32UTF8
ERROR at line 1:
ORA-12712: new character set must be a superset of old character set
I would sure not like to reinstall the db and migrate the tables again. Thanks.

See this related thread - Re: Want to change characterset of DB
You can use the ALTER DATABASE CHARACTER SET command in very few cases. You will most likely have to recreate the database and re-migrate the data.
HTH
Srini

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Unable to alter character set from WE8MSWIN1252 to AL32UTF8

Hi,
I am trying to migrate some tables to my database.
On the source DB, the character set is AL32UTF8
On My database, the character set is WE8MSWIN1252.
When I tried to alter the character set, I get this error message:
ALTER DATABASE CHARACTER SET AL32UTF8
ERROR at line 1:
ORA-12712: new character set must be a superset of old character set
Any help? Thanks.

Pl refrain from posting duplicate threads :-)
Unable to migrate table, character set from WE8MSWIN1252 to AL32UTF8
Srini

Need to change character set from WE8MSWIN1252 to AL32UTF8.

Hi,
We have installed the database with Character set WE8MSWIN1252. But off late we understood that client requirement is AL32UTF8. Is there any way to change in easy method?
Thanks in-advance.
Rgds
DBA.

Pl also see these Docs
AL32UTF8 / UTF8 (Unicode) Database Character Set Implications          [Document 788156.1]
Changing the NLS_CHARACTERSET to AL32UTF8 / UTF8 (Unicode)          [Document 260192.1]
If you are using EBS, then also see
For 11i - Appendix A of "Oracle Applications 11i Internationalization Guide          [Document 333785.1]"
For R12 - Appendix A of "Globalization Guide for Oracle Applications Release 12          [Document 393861.1]"
Changing the characterset of an existing database/application is not a trivial task - will require thorough planning and testing.
HTH
Srini

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good morning everybody,
I need your help to know all step which it is necessary to follow to change the Database Character Set From WE8MSWIN1252 to AR8MSWIN1256
thank you

If you have not already done so, read up on Character Set Migration and using the CSSCAN tool to verify the database before making any changes.

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Is your data size above GBs? If not this might help before installation I guess ->
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http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14225/ch11charsetmig.htm#sthref1476
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Our database is running on Oracle database 10.1.0.4.0 (AIX) The following are its parameters:
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VALUE
US7ASCII
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Step 12
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There you are! Thanks! Seems like I am right in my understanding about the Oracle Official Documentation. Thanks!
Hmmmmm...when you say:
*"you can do selective export of only convertible tables, truncate the tables, use CSALTER, and re-import."*
This means that:
1. After running csscan on database PROD, i will take note of the convertible tables in the .txt output file.
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evil.stefano wrote:
Hi guys,
I've a new and empty oracle 11gr2 database for my test environment, during the installation i've choosed the UTF-8 character's set but now i've see that in the production environment there is the WEISO8859 character's set.
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STARTUP MOUNT;
ALTER SYSTEM ENABLE RESTRICTED SESSION;
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vkat wrote:
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Unable to migrate table, character set from WE8MSWIN1252 to AL32UTF8

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