1.减少log_buffer的value 64K就可以了,或者加个ORACLE内部参数_LOG_IO_SIZE=16K
2.增加rollback segment的个数
3.Eliminate HOT blocks from the application. Check for repeatedly scanned / unselective indexes. Change PCTFREE and/or PCTUSED. Check for 'right- hand-indexes' (indexes that get inserted into at the same point by many processes). Increase INITRANS. Reduce the number of rows per block.
第三点要综合分析
可以参阅"buffer busy waits" Reference Note
