Rebuilding Index Disable it's monitoring (Doc ID 1588173.1)

Last updated on JANUARY 07, 2025

Applies to:

Symptoms

Rebuilding an index resets monitoring status to NO and disable it, below an example:

SQL> create index idx_io on TEST(OWNER,OBJECT_NAME,SUBOBJECT_NAME);

Index created.

SQL> alter index idx_io monitoring usage;

Index altered.

SQL> select * from v$object_usage;

INDEX_NAME                     TABLE_NAME                     MON USE START_MONITORING    END_MONITORING
------------------------------ ------------------------------ --- --- ------------------- -------------------
IDX_IO                         TEST           YES NO  02/07/2013 17:53:08

SQL> alter index idx_io rebuild online;

Index altered.

SQL> select * from v$object_usage;

INDEX_NAME                     TABLE_NAME                     MON USE START_MONITORING    END_MONITORING
------------------------------ ------------------------------ --- --- ------------------- -------------------
IDX_IO                         TEST           NO  NO  02/07/2013 17:53:08

As from above, the value for MONITORING in v$object_usage has been changed to NO

Also the USED column value has been changed to NO

Cause

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