Check unusable and not valid Index in Oracle

Below Query will convert all the unusable and not valid indexes in Oracle. The query will cover the complete index with partition index and subpartition index.

The result will give you the rebuild command of the invalid or unusable indexes.
You can directly run that and on sqlplus and make them a valid or usable state.

QUERY :

SELECT 'ALTER INDEX ' || OWNER || '.' ||
INDEX_NAME || ' REBUILD ' ||
' TABLESPACE ' || TABLESPACE_NAME || ';'
FROM DBA_INDEXES
WHERE STATUS='UNUSABLE'
UNION
SELECT 'ALTER INDEX ' || INDEX_OWNER || '.' ||
INDEX_NAME ||
' REBUILD PARTITION ' || PARTITION_NAME ||
' TABLESPACE ' || TABLESPACE_NAME || ';'
FROM DBA_IND_PARTITIONS
WHERE STATUS='UNUSABLE'
UNION
SELECT 'ALTER INDEX ' || INDEX_OWNER || '.' ||
INDEX_NAME ||
' REBUILD SUBPARTITION '||SUBPARTITION_NAME||
' TABLESPACE ' || TABLESPACE_NAME || ';'
FROM DBA_IND_SUBPARTITIONS
WHERE STATUS='UNUSABLE';

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