|
statistics name |
description |
recommend action |
|
redo log space requests |
리두 로그 파일에 공간 확보를 하기 위해 대기한 횟수 |
tune checkpoint, dbwr, archive process use bigger log file |
|
consistent changes |
consistent read를 위해 롤백된 횟수 |
Automatic undo management 사용 tune work load |
|
consistent gets |
consistent read모드로 읽은 블럭 수 |
Automatic undo management 사용 tune work load |
|
table fetch by continued row |
migration or chained rows |
reorganization |
조회 방법.
select name, value from v$sysstat where name like 'redo log space reque%'
union all
select name, value from v$sysstat where name like 'consistent changes%'
union all
select name, value from v$sysstat where name like 'con%'
union all
select name, value from v$sysstat where name like 'table fetch by continuted row';
NAME VALUE
---------------------------------------------------------------- ----------
redo log space requests 124
consistent changes 930117
concurrency wait time 3854
consistent gets 4241014
consistent gets from cache 4191819
consistent gets from cache (fastpath) 2249943
consistent gets - examination 1670409
consistent gets direct 49195
consistent changes 930117
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