Reserved error (-7768); there is no message for this error.

hi,
"Reserved error (-7768); there is no message for this error."
i am getting this error while i am reading a record from the database. the database is Oracle 7 and i am using DAO 3.5.

this application reads data from the database,updates one field and writes the data to a text file.

the application is installed at the client's place.

The application displays a status
e.g Reading 201 record of 500 records.

the problem is that this error is coming only for a particular record. the application is able to read other records.

can some one help ?

thanks
Ankur.