oracle performance problem

zhoujianfeng

各位高手:
    请教大家几个问题,请多多支持,谢谢!
    我在 SAP DB中发现一些日志信息,好象是说参数设置不合理,但我不明白什么意思,请帮忙看看:
   APDBA: Alert - Parameter LOG_BUFFER is set to 10485760
                  (outside of check interval 307200 - 1126400)
  SAPDBA: Alert - Parameter LOG_CHECKPOINT_INTERVAL is set to    300000 < 3000000000
   SAPDBA: Alert - Parameter DB_FILE_MULTIBLOCK_READ_COUNT is set to  32 >; 8
   SAPDBA: Alert - Parameter OPTIMIZER_FEATURES_ENABLE is set to 8.1.6 (not to proper value 8.0.4)
    SAPDBA: Warning - Oracle profile parameters are not set properly.
   For more details view CCMS transaction DB16