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ORACLE数据库管理员的职责(41) -- default value for NEXT.
--
-- This tells us what the setting for NEXT is for these objects today.
--
-- 11/30/98
SELECT segment_name, segment_type, ds.next_extent as Actual_Next
, dt.tablespace_name, dt.next_extent as Default_Next
FROM dba_tablespaces dt, dba_segments ds
WHERE dt.tablespace_name = ds.tablespace_name
AND dt.next_extent !=ds.next_extent
AND ds.owner = UPPER ( '&OWNER' )
ORDER BY tablespace_name, segment_type, segment_name
2. existext.sql
--
-- existext.sql
--
-- To check existing extents
--
-- This tells us how many of each object's extents differ in size from
-- the tablespace's default size. If this report shows a lot of different
-- sized extents, your free space is likely to become fragmented. If so,
-- this tablespace is a candidate for reorganizing.
--
-- 12/15/98
SELECT segment_name, segment_type
, count(*) as nr_exts
, sum ( DECODE ( dx.bytes,dt.next_extent,0,1) ) as nr_illsized_exts
, dt.tablespace_name, dt.next_extent as dflt_ext_size
FROM dba_tablespaces dt, dba_extents dx
WHERE dt.tablespace_name = dx.tablespace_name
AND dx.owner = '&OWNER'
GROUP BY segment_name, segment_type, dt.tablespace_name, dt.next_extent
3. No_pk.sql
--
-- no_pk.sql
--
-- To find tables without PK constraint
--
-- 11/2/98
SELECT table_name
FROM all_tables
WHERE owner = '&OWNER'
MINUS
SELECT table_name
FROM all_constraints
WHERE owner = '&&OWNER'
AND constraint_type = 'P'
4. disPK.sql
--
-- disPK.sql
--
-- To find out which primary keys are disabled
--
-- 11/30/98
SELECT owner, constraint_name, table_name, status
FROM all_constraints
WHERE owner = '&OWNER' AND status = 'DISABLED’ AND constraint_type = 'P'
5. nonuPK.sql
--
-- nonuPK.sql
--
-- To find tables with nonunique PK indexes. Requires that PK names
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