Index Rebuild

We can rebuild index with below commands:

ONLINE: no exclusive lock

alter index <owner>.<index_name> rebuild online parallel 4;
alter index <owner>.<index_name> noparallel;

OFFLINE: exclusive lock

alter index <owner>.<index_name> rebuild parallel 4;
alter index <owner>.<index_name> noparallel;

NOLOGGING: not best method if we restore/recovery DB.

ONLINE: no exclusive lock

alter index <owner>.<index_name> rebuild online parallel 4 nologging;
alter index <owner>.<index_name> noparallel;
alter index <owner>.<index_name> nologging;

OFFLINE: exclusive lock

alter index <owner>.<index_name> rebuild parallel 4 nologging;
alter index <owner>.<index_name> noparallel;
alter index <owner>.<index_name> nologging;

PARTITION INDEX:

alter index <owner>.<index_name> rebuild partition <partition_name>;

SUBPARTITION INDEX:

alter index <owner>.<index_name> rebuild subpartition <partition_name>;


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