Input Truncated to #characters

[karsh]

I have some procedures and report written in pl/sql. when i run some report written in sql, i get the right information.
But, when i do select * from any table after this reports, i get the table fields but many are missing saying
input will be truncated.
input will be truncated.
input will be truncated.
and so on, and this many columns are gone.
i read that its something to do with the script file we write to run the report. it says leave a carriage return at the end of the script, which i did.
still the same problem.
any inputs will be appreciated.thanks