ORA-00100: no data found
Cause: An application made reference to unknown or inaccessible data.
Action: Handle this condition within the application or make appropriate modifications to the application code. Note: If the application uses Oracle-mode SQL instead of ANSI-mode SQL, ORA-01403 will be generated instead of ORA-00100.
Sanjay G.
Oracle Certified Professional 8i, 9i.
"The degree of normality in a database is inversely proportional to that of its DBA"
This is a general error, which says the data you are looking for is not found. These kind of errors can be traced only by debugging the application. Give some exercise to your brain and find it out yourself