Oracle 查看索引状态信息以及索引重建

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select status,T.* from user_indexes T where table_name='表名'

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状态列STATUS说明：
valid:当前索引有效
N/A :分区索引 有效
unusable:索引失效

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select index_name, partition_name, status
from user_ind_partitions
where index_name = '索引名称';

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索引状态说明：
USABLE：索引有效
UNUSABLE：索引失效

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SELECT status, COUNT(*)
FROM dba_indexes
GROUP BY status
UNION
SELECT status, COUNT(*)
FROM dba_ind_partitions
GROUP BY status
UNION
SELECT status, COUNT(*)
FROM dba_ind_subpartitions
GROUP BY status

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alter index pk_kc03 rebuild nologging;
or
alter index pk_kc03 rebuild

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select b.table_name,
a.INDEX_NAME,
a.PARTITION_NAME,
a.STATUS,
'alter index ' || a.index_name || ' rebuild partition ' ||partition_name || ';' --重建列
from USER_IND_PARTITIONS a, user_part_indexes b
where a.index_name = b.index_name
and b.TABLE_NAME IN ('PART_TAB_SPLIT')
and STATUS = 'UNUSABLE'
ORDER BY b.table_name, a.INDEX_NAME, a.PARTITION_NAME;

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alter table part_tab_trunc truncate partition p2 Update GLOBAL
indexes;