Probably. If in doubt speak to your systems administrator if you're concerned about space or any quota or other restrictions you may be working under. Still, I don't know why you're investigating this aspect. Read and understand Basic debugging checklist from Debugging and Optimization within tutorials. Make some basic debugging efforts, I don't see any in your code, some basic warn/print statements in appropriate places would be a start. Had you read the DBI documentation you'd know about tracing, but we've been round this loop before at least twice.