Guang Mei,
All the DR$ objects are interMedia Index segments - some are tables, some
are indexes, some are IOTs. Check out OTN and/or MetaLink for docs on how
each segment type contributes to the interMedia indexing process. It's
quite interesting.
Jack C. Applewhite
Database Administrator
Austin Independent School District
Austin, Texas
512.414.9715 (wk)
512.935.5929 (pager)
[EMAIL PROTECTED]
"gmei"
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ORACLE-L
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Subject: why these tables can not be
seen from
user_segments?
02/04/2003 09:24
AM
Please respond to
ORACLE-L
Hi:
Oracle 8173 on Sun Box.
SQL> select count(*) from user_tables;
COUNT(*)
----------
326
SQL> select count(*) from user_segments where segment_type='TABLE';
COUNT(*)
----------
318
SQL> select segment_name from user_segments
2 where segment_type='TABLE'
3 and segment_name like 'DR$%'
4 order by segment_name;
SEGMENT_NAME
----------------------------------------------------------------------------
----
DR$ABSTRACT_TEXT$I
DR$ABSTRACT_TEXT$R
DR$COREREF_ABSTRACT$I
DR$COREREF_ABSTRACT$R
DR$COREREF_TITLE$I
DR$COREREF_TITLE$R
DR$TEST_CONTEXT$I
DR$TEST_CONTEXT$R
8 rows selected.
SQL> select table_name from user_tables
2 where table_name like 'DR$%'
3 order by table_name;
TABLE_NAME
------------------------------
DR$ABSTRACT_TEXT$I
DR$ABSTRACT_TEXT$K
DR$ABSTRACT_TEXT$N
DR$ABSTRACT_TEXT$R
DR$COREREF_ABSTRACT$I
DR$COREREF_ABSTRACT$K
DR$COREREF_ABSTRACT$N
DR$COREREF_ABSTRACT$R
DR$COREREF_TITLE$I
DR$COREREF_TITLE$K
DR$COREREF_TITLE$N
TABLE_NAME
------------------------------
DR$COREREF_TITLE$R
DR$TEST_CONTEXT$I
DR$TEST_CONTEXT$K
DR$TEST_CONTEXT$N
DR$TEST_CONTEXT$R
16 rows selected.
Why tables like DR$ABSTRACT_TEXT$K, DR$ABSTRACT_TEXT$N do not have their
corresponding segments? What are they and their functions?
TIA.
Guang Mei
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