Problem migrating database with charsetset ZHT16MSWIN950 to WE8MSWIN1252

Hello everybody,
I have a database in Oracle 8.1.7 with characterset ZHT16MSWIN950, and I need to migrate this database to Oracle 11.2.0.2 with characterset WE8MSWIN1252. I use EXP (ver. 8.1.7) to export and IMP (ver. 8.1.7) to import and it seems to work fine, but in the source database I store spanish characters (characters with accents, for example "Organización"), and the target database these characters are not imported correctly (for example "Organizaci?n").
These are the parameters to database level:
Oracle 8.1.7 (source)
               NLS_LANGUAGE = AMERICAN
               NLS_TERRITORY = AMERICA
               NLS_CHARACTERSET = ZHT16MSWIN950
               NLS_NCHAR_CHARACTERSET = ZHT16MSWIN950
               NLS_RDBMS_VERSION = 8.1.7.0.0
Oracle 11.2.0.2 (target)
               NLS_LANGUAGE = AMERICAN
               NLS_TERRITORY = AMERICA
               NLS_CHARACTERSET = WE8MSWIN1252
               NLS_NCHAR_CHARACTERSET = AL16UTF16
               NLS_RDBMS_VERSION = 11.2.0.2.0
To export the database I've tried to use NLS_LANG parameter to session level with the following values:
               NLS_LANG = AMERICAN_AMERICA.ZHT16MSWIN950
               NLS_LANG = AMERICAN_AMERICA.WE8MSWIN1252
               NLS_LANG = SPANISH_SPAIN.WE8MSWIN1252
               NLS_LANG = TRADITIONAL CHINESE_TAIWAN.ZHT16MSWIN950
But everytime the import was with those errors (the accents were not migrated propertly).
If I connect to the source database (8.1.7) from PowerBuilder I can see the accents correctly, but when I connect with SQL Plus I can't see the accents, it is very rare.I think for this reason that it is no considering the accents.
I appreciate any help.
Best regards.
Antonio.

Hello,
I have a database in Oracle 8.1.7 with characterset ZHT16MSWIN950, and I need to migrate this database to Oracle 11.2.0.2 with characterset WE8MSWIN1252.
I think there's something wrong.
The character set ZHT16MSWIN950 is for Traditional Chinese and is encoded in Multibytes (I think 2 Bytes), while WE8MSWIN1252 is encoded in 1 Byte.
So you cannot do this conversion without loosing characters.
You should migrate to UNICODE (AL32UTF8), this link may help you:
http://docs.oracle.com/cd/E11882_01/server.112/e10729/ch11charsetmig.htm#NLSPG011
You'll have also some interesting reference here:
https://forums.oracle.com/thread/1056444
Hope this help,
Best Regards,
Jean-Valentin Lubiez

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import java.util.Collection;
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/code]
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where name='NLS_CHARACTERSET'
RESULT: Acute e shows properly but it gives problem in the application
"java.sql.SQLException: Fail to convert between UTF8 and UCS2: failUTF8Conv"
Looking further it was observed the following:
when you try this command on a column 'city' in a table which contains 'Genhva' (note the acute e after n), it shows
command: select length(city), vsize(city),substr(city,4,1),city from cities
Result: 4 6 hva Genhva
if you see the value of substr(city,4,1) , you will see the problem. Also note that the length shows 4 and size shows 6. Moreover, when these records are selected through JDBC Driver, it starts giving problems.
6)
Actually the above (point no. 5) is similar to changing the character set of the database with 'ALTER DATABASE CHARACTER SET UTF8'. Same problem is observed then too.
7)
We have also tried to with another method, that is by changing the third byte of the export file which specifies the character set, to the UTF8 code by editing the export file with a Hexdecimal editor. After import the same problem has been observed as defined in (5) and (6) above.
We have no more ideas how to migrate without corrupting the data. Of course we have known the records where these characters occur through the Oracle's cssacn utility but we do not want to manually rectify each and every record by replacing it with an ASCII character. Any other idea as to how this can be accomplised?
Thanx
Ashok

The problem you have is that although your original database is defined as US7ASCII, the data it contains is more than is covered by this code page (as the reply on Sept 4 to the previous posting already said).
This has probably happened because the client was also defined as US7ASCII, and when the DB and client are defined as having the same character set no conversion (or checdking) takes place when data is passed between them. However if you are using a Windows client then it will in fact be using Windows code page 1252 (Latin-1) or similar, and this allows many more characters, including h (accented e). So a user can enter all these characters and store them in the database, and similarly read them from the database, because data transfer is transparent.
When you did ALTER DATABASE CHARACTER SET UTF8 this will only change the label on the database, but not affect the contents. However only part of the contents are valid UTF8, any character above 7F (like h) is invalid. If your original client now uses the database, code page transformation will take place because the client and DB have different character sets defined. The invalid codes can then cause problems.
Without being able to explain what has happened in detail, it may help to see what your h (dec 232, x'E8') looks like. The actual data has not changed (you can see this as it is reported as 232). However the binary code there (11101000) is invalid UTF8. UTF8 encodes a character in 1 to 4 bytes, and the first bits in a UTF8 character tell how many bytes it uses. 0xxx tell it is one byte (same as the corresponding USASCII character), 110x that it uses 2 bytes, 1110 that it uses 3 bytes etc. So if you interpret what is there as UTF8 it looks like the first byte of a 3-byte character, which explains why the substringing is giving you the other 2 bytes as well.
Can you fix this without losing data? I believe yes. First you should check what other characters are being flagged by the scan. See if these are contained in another standard character set. If they are only Western European accentet characters then WE8ISO8859P1 is probably ok, but watch out for the euro sign which Windows has at x'80', an undefined character in ISO8859-1.
You can see the contents of the Microsoft Windows Codepage 1252 at: http://www.microsoft.com/globaldev/reference/sbcs/1252.htm
For a listing of the US-ASCII defined characters see http://czyborra.com/charsets/iso646.html and for ISO 8859-1 see http://czyborra.com/charsets/iso8859.html#ISO-8859-1
If all is well, you can first ALTER DATABASE CHARACTER SET to WE8ISO8859P1. This will not change any data, but ensure that all the data gets exported. Then export the DB and import it to a UTF8 DB. This will convert the non-US-ASCII characters to Unicode. You will also have to change the clients character set to something other than USASCII or they will just see ? for the other characters.
Good Luck!

Use of non-migratable database link not allowed in OSB

Hi All,
I have a procedure in which tables are invoked using Database links.
Now I have created a business service which uses this procedure. However I am getting below error
The invocation resulted in an error: Invoke JCA outbound service failed with application error, exception: com.bea.wli.sb.transports.jca.JCATransportException: oracle.tip.adapter.sa.api.JCABindingException: oracle.tip.adapter.sa.impl.fw.ext.org.collaxa.thirdparty.apache.wsif.WSIFException: servicebus:/WSDL/E2xInterface_V1/WSDL/GetEWOStatus [ GetEWOStatus_ptt::GetEWOStatus(InputParameters,OutputParameters) ] - WSIF JCA Execute of operation 'GetEWOStatus' failed due to: Stored procedure invocation error.
Error while trying to prepare and execute the SP_GETEWOSTATUS API.
An error occurred while preparing and executing the SP_GETEWOSTATUS API. Cause: java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1
ORA-24777: use of non-migratable database link not allowed
can we use dblink in procedure while accessing through business service. Please let me know.
Thanks
Chandana

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