We have a database (Oracle on SunSolaris now with AMERICAN_AMERICA.WE8ISO8859P1 character set.

Now, we are planning to convert it to UNICODE character set.

Is it possible to convert a AMERICAN_AMERICA.WE8ISO8859P1 database to a UNICODE character set database???

If yes, could we use the ALTER DATABASE command
to do the database conversion?

What is the commonly used UNICODE type (is it UTF8) ?

If I change it to any of the UNICODE types, then what other changes do I have to make.....any increase in the field lengths, etc...

Thanks in advance!