OBJECT_ID

NUMBER

NOT NULL

Object ID for the index

NAME

VARCHAR2(128)

NOT NULL

Index name

OWNER

VARCHAR2(128)

NOT NULL

Index owner

TOTAL_ACCESS_COUNT

NUMBER

Total number of times the index has been accessed

TOTAL_EXEC_COUNT

NUMBER

Total executions the index has participated in

TOTAL_ROWS_RETURNED

NUMBER

Total rows returned by the index.

Index usage is categorized into buckets of different ranges. Each bucket has a range of values for access count and rows returned. An entry is placed into a bucket if the rows returned or access counts falls within the range of that bucket.

BUCKET_0_ACCESS_COUNT

NUMBER

The index has not been accessed

BUCKET_1_ACCESS_COUNT

NUMBER

The index has been accessed once

BUCKET_2_10_ACCESS_COUNT

NUMBER

The index has been accessed between 2 and 10 times

BUCKET_2_10_ROWS_RETURNED

NUMBER

The index has returned between 2 and 10 rows

BUCKET_11_100_ACCESS_COUNT

NUMBER

The index has been accessed between 11 and 100 times

BUCKET_11_100_ROWS_RETURNED

NUMBER

The index has returned between 11 and 100 rows

BUCKET_101_1000_ACCESS_COUNT

NUMBER

The index has been accessed between 101 and 1000 times

BUCKET_101_1000_ROWS_RETURNED

NUMBER

The index has returned between 101 and 1000 rows

BUCKET_1000_PLUS_ACCESS_COUNT

NUMBER

The index has been accessed more than 1000 times

BUCKET_1000_PLUS_ROWS_RETURNED

NUMBER

The index has returned more than 1000 rows

LAST_USED

DATE

Time that the index was last used