Only display the first character issue

Hi,

I'm using CR 2008 to generate reports.

I use oracle database.

I use a stored procedure to get data and everything working fine ,it return correct data.

I have five details section but i display one details section and i suppress others

My issue is execute the rpt file to presssig F5 key; string type record is only able to print the first character on the preview.

eg: record with value 'ABCDE', after printed on rpt file, only character 'A' was printed on the preview.

if i verify database, it display correct data but a few times later problem occurs again

Anyone know how to fix it?