( send again , hope the numbers are readable) We bounced the instance.and reverted back the last weekend changes about the memoery setting. Now gets down to 2. backlog are drainning quickly. Not sure it is the new memory value caused the problem or the simple bonce just did the magic. ===> old values db_cache_size?00M shared_pool_sizeu0M java_pool_size 0M large_pool_size 000000 streams_pool_sizeP331648 ===> new values introduced last weekend sga_max_size400M sga_target000M db_cache_size000M shared_pool_size?0M java_pool_size 8M large_pool_size2M streams_pool_sizeHM System Configuration: Sun Microsystems sun4u Sun Fire E25K System clock frequency: 150 MHz Memory size: 81920 Megabytes -- //www.freelists.org/webpage/oracle-l