transfer data from a database not AL32UTF8 (WE8ISO8859P1, US7ASCII, UTF8) to a db AL32UTF8 using dblinks
Hello
We had 3 databases off-production of the version 11.2.0.4 on AIX platform. These 3 databases had character set WE8ISO8859P1, US7ASCII & UTF8.
We are migrating to AIX to the Linux platform and DB version will remain the same. New databases will have character set AL32UTF8.
We had gone through various metalink notes related to conversion problems and possibly the character set. We understand that we need run the csscan utility to check
all possible data issues and fixed before using export/import. We are trying to see if we can use DB link to copy data from db not AL32UTF8 AL32UTF8 DB.
And we have not found any document mentioned that DB link can handle character set conversion and can use as an alternative to export/import.
Our concern is that can we use DB links to copy data not AL32UTF8 db db AL32UTF8 after we deal with truncation and data loss?
The DB has only English characters and symbols. There are sign euro no. European characters or Asian characters in db.
Help, please.
I've referenced below documents.
AL32UTF8 / UTF8 (Unicode) database Character Set Implications (Doc ID 788156.1()
Note 1297961.1 ORA-01401 / ORA-12899 when importing data into an AL32UTF8 / UTF8 (Unicode) or other multibyte NLS_CHARACTERSET databases.
Note 144808.1 Examples and limits on use of BYTE and CHAR semantics.
Please see Note 269381.1 ORA-01406 or ORA-06502 in PLSQL when querying data in UTF8 (AL32) db db not remote UTF8 with the cursor
Note 158577.1 NLS_LANG explained (how work of transformation of characters Client / Server)?
NOTE: 745809.1 -Installation and configuration of Csscan 10 g and 11 g (database character set Scanner)
NOTE: 444701.1 -Exit Csscan explained (also contain how to run csscan)
Thank you
Ashish
Yes, you can use the links to the DB. I doubt DB links are faster than Data Pump, but they perform character set conversion. Questions that you can meet the copy of data through DB links are basically the same, you may encounter using Data Pump or any other method of migration.
One import thing to note: If you are using ETG over link DB (without specifying data types), columns of the semantics of length created on the target aura database bytes of length three times larger than the columns in the source constraints. You can run the CREATE TABLE AS SELECT INSERT followed instead.
Thank you
Sergiusz
Tags: Database
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