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Redo Log Buffer?Oracle????????????????????????????????Redo Log Buffer???????????????????????????????????????DBA???????????????????????????Redo Log Buffer??????
Redo Log Buffer??????KB?MB?GB???????????512KB???????????????Oracle???????4G????????????????Redo Log Buffer???????????????????????????????RTO??????????
Redo Log Buffer????Redo Entry???????ID??????????Redo Entry?????Redo Log File??????????????????Redo Log File Group?????Redo Log Buffer????????????????????????????Oracle????Redo Log Buffer????????
Oracle?????????????????Redo Log Buffer???????????????SQL?????log_buffer??????
SQL> select * from v$sgastat where name = 'log_buffer';
???????????????????????log_buffer?????????
SQL> show parameter log_buffer;
??????????????????Redo Log Buffer?????????????????????????Redo Log Buffer??????????????????
??Redo Log Buffer??Oracle?????????????????LARGE_POOL?Java Pool?Streams Pool?????????????????????LARGE_POOL???????????????Java Pool?????Java??????????Streams Pool????????????????
???????????????????????????
Shared Server MTS????????????MTS?Multi-Threaded Server??Oracle??????????????????????????????????
Parallel Query Option PQO???????????????CPU?????????????????
IO???????????????????????IO?????????????????
RMAN?Recovery Manager?RMAN??Oracle????????????????????????????????
????????????????????????Oracle?????????????????????????????????????????????????
???Oracle???????????????????????????????????????????????V$SGASTAT???????SGA?System Global Area??????????????V$JAVA_POOL_ADVICE???????????Java?????
???Oracle????????????????????????????????????Redo Log Buffer?LARGE_POOL?Java Pool?Streams Pool??????????????????????????????????????????????????????
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