Infospoke execution issue!!!! Urgent Help needed

Hi All,

We have an infospoke (which has an extract structure of 118 fields) this infospoke runs well interms of performance on the QA box..when we moved it to the prod environemnt it does not run when other processes run,,,it slows down considerably like in QA for same time period it runs for 50 minutes whereas in the prod it runs for like 4 hrs yet with no result it looks like its in an infinite loop...in sm50 we see that it has got stuck in the SAPLRSDU_SQL program.....in the insert statement..

Immediate help needeed as the business needs historic data immediately.....