For the last two days our BW System experiencing very slow performance. the reports which were running for 1 or 2 min previously now taking 15 to 20 min and sometimes system showing timeout Error. we could not able to identify the exact problem. In bw statistics DB Time showing 98 to 99% of total time.we are using bw 3.5 version. It would be higly appreciated if anybody through some light on this issue.