I've encourted ORA-32255 error.
I havent investigated this bug yet enough but
it seems when DOA(Im using TOracleQuery) reads Long data-type columns, this error *often* occurs.

DOA 4.0.7.1
Oracle 10.2.0.1

(Im using TOracleQuery)->((Im using TOracleDataSet.Fields.AsString)

I cannot find any information on ORA-32255. Is there any error text?

My apps reads USER_TAB_COLUMNS.DEFAULT columns many times. then ORA-32255 error often occurs but not always. it seems when reading NULL long value, this error occurs.

>Is there any error text?
error text is
ORA-32255: Message 32255 not found; product=RDBMS; facility=ORA

I goolgled this error but i dont know if this is oracle bug or not.
ttp://www.lazydba.com/oracle/0__124163.html
ttp://forums.oracle.com/forums/thread.jspa?messageID=1969400

There is indeed not much information about this error code. A bit of a mystery really. I'll see if I can find something.

Yeh. theres not much information. thats why i dont know where to do.anyway, i'll try make a small program for producing this error and mail it to u if i can.