?????? (?database open)????recovery?redo??,??????????????????:

> Buffer cache spillover: only 32768 of 117227 buffers available$

????crash recovery?redo apply??????buffer cache,??buffer cache???recovery buffer? ?????recovery buffer,????????age out????????redo change???????????

????????????recovery(???crash recovery??instance recovery),?????buffer cache ??????????????(recovery)???? ??????(lock claim phase),?????????buffer cache ??spillover??????(???swap)??????????????????,oracle???????redo change???????????buffer cache????????recovery buffer????????,???????????????????? ?????????????(spillover recovery)??????????????(?????????,?????????redo apply),????????????

??????,??crash recovery???? buffer cache??????????; ?????????, ?????????????buffer cache????????,?????????????????????????,?????????????????db_cache_size???????,??alter database open??????(Buffer cache spillover: only 32768 of 117227 buffers available$),??????????????????

????????buffer cache spillover,?????????10???????????????,????????alert.log 30??????????,?????spillover???hang,?????????OTN Ask Maclean