언밸런싱된 인덱스를 찾고 해단인덱스의 크기를 알아보자
#unbalance index & size 확인 SELECT A.owner, A.SEGMENT_NAME, ROUND(SUM(A.BYTES)/1024/1024) "SIZE_MB", A.SEGMENT_TYPE FROM DBA_SEGMENTS A, DBA_INDEXES B WHERE A.SEGMENT_NAME = B.INDEX_NAME AND A.SEGMENT_TYPE IN ('INDEX','INDEX PARTITION') --AND A.OWNER IN ('APPLSYS','XLA') AND A.segment_name IN( select index_name from dba_indexes where blevel >=3 ) GROUP BY A.SEGMENT_NAME, A.SEGMENT_TYPE, A.OWNER O..