Converting from Single Byte to Multi Byte character set

Hello,
I'm trying to migrate one schema, including data, from a 10g (10.1.0.2.0) DB with IW8ISO8859P8 character set, to a 10g (10.2.0.1.0) DB with AL32UTF8 character set.
The original tables are using VARCHAR2 columns, including some VARCHAR2(1) columns.
I'm trying to use exp and imp for the task, but during import I'm receiving errors like:
IMP-00019: row rejected due to ORACLE error 12899
IMP-00003: ORACLE error 12899 encountered
ORA-12899: value too large for column "SHAMAUT"."TIKIM"."GAR_SET" (actual: 2, maximum: 1)These errors are not limited to the one-character columns only.
Is there a way to export/import the data with AL32UTF8 in mind, so the system will automatically convert the data properly?
Thanks for the help,
Arie.

It's not a true conversion problem that you have but more a space problem. Tables columns are created by default with the init. parameter NLS_LENGTH_SEMANTICS character semantics:
If NLS_LENGTH_SEMANTICS = BYTE
then 1 character = 1 byte whatever the db character set
If NLS_LENGTH_SEMANTICS = CHAR
then 1 character = 1 character size for the db character set.
If this parameter is changed it is only taken into account for newly created tables or columns: existing columns are not changed.
See http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96529/ch2.htm#104327
The only solution I see is to enlarge your VARCHAR2 columns before running the import...
Message was edited by:
Pierre Forstmann

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It's not a true conversion problem that you have but more a space problem. Tables columns are created by default with the init. parameter NLS_LENGTH_SEMANTICS character semantics:
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The only solution I see is to enlarge your VARCHAR2 columns before running the import...
Message was edited by:
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