amp;THRESHOLD
OR ( ( s.max_extents - count(*) ) < &&THRESHOLD )
ORDER BY count(*) desc
4. spacebound.sql
-- spacebound.sql
-- To identify space-bound objects. If all is well, no rows are returned.
-- If any space-bound objects are found, look at value of NEXT extent
-- size to figure out what happened.
-- Then use coalesce (alter tablespace <foo> coalesce .
-- Lastly, add another datafile to the tablespace if needed.
-- 11/30/98
SELECT a.table_name, a.next_extent, a.tablespace_name
FROM all_tables a,
( SELECT tablespace_name, max(bytes) as big_chunk
FROM dba_free_space
GROUP BY tablespace_name ) f
WHERE f.tablespace_name = a.tablespace_name
AND a.next_extent > f.big_chunk
B. 每晚处理程序
1. mk_volfact.sql
-- mk_volfact.sql (only run this once to set it up; do not run it nightly!)
-- -- Table UTL_VOL_FACTS
CREATE TABLE utl_vol_facts (
table_name VARCHAR2(30),
num_rows NUMBER,
meas_dt DATE )
TABLESPACE platab
STORAGE (
INITIAL 128k
NEXT 128k
PCTINCREASE 0
MINEXTENTS 1
MAXEXTENTS unlimited
)
/
-- Public Synonym
CREATE PUBLIC SYNONYM utl_vol_facts FOR &OWNER..utl_vol_facts
/
-- Grants for UTL_VOL_FACTS
GRANT SELECT ON utl_vol_facts TO public
/
2. analyze_comp.sql
--
-- analyze_comp.sql
--
BEGIN
sys.dbms_utility.analyze_schema ( ''''&OWNER'''',''''COMPUTE'''');
END ;
/
3. pop_vol.sql
--
-- pop_vol.sql
--
insert into utl_vol_facts
select table_name
, NVL ( num_rows, 0) as num_rows
, trunc ( last_analyzed ) as meas_dt
from all_tables -- or just user_tables
where owner in (''''&OWNER'''') -- or a comma-separated list of owners
/
commit
/
C. 每周处理程序
1. nextext.sql
--
-- nextext.sql
--
-- To find tables that don''''t match the tablespace default for NEXT extent.
-- The implicit rule here is that every table in a given tablespace should
-- use the exact same value for NEXT, which should also be the tablespace''''s
-- 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
-- follow a naming convention. An alternative query follows that
-- does not have this requirement, but runs more slowly.
--
-- 11/2/98
SELECT index_name, table_name, uniqueness
FROM all_indexes
WHERE index_name like ''''&PKNAME%''''
AND owner = ''''&OWNER'''' AND uniqueness = ''''NONUNIQUE''''
SELECT c.constraint_name, i.tablespace_name, i.uniqueness
FROM all_constraints c , all_indexes i
WHERE c.owner = UPPER ( ''''&OWNER'''' ) AND i.uniqueness = ''''NONUNIQUE''''
AND c.constraint_type = ''''P'''' AND i.index_name = c.constraint_name
6. mkrebuild_idx.sql
--
-- mkrebuild_idx.sql
--
-- Rebuild indexes to have correct storage parameters
--
-- 11/2/98
SELECT ''''alter index '''' || index_name || '''' rebuild ''''
, ''''tablespace INDEXES storage ''''
|| '''' ( initial 256 K next 256 K pctincrease 0 ) ; ''''
FROM all_indexes
WHERE ( tablespace_name != ''''INDEXES''''
OR next_extent != ( 256 * 1024 )
)
AND owner = ''''&OWNER''''
/
7. datatype.sql
--
-- datatype.sql
--
-- To check datatype consistency between two environments
--
-- 11/30/98
SELECT
table_name,
column_name,
data_type,
data_length,
data_precision,
data_scale,
nullable
FROM all_tab_columns -- first environment
WHERE owner = ''''&OWNER''''
MINUS
SELECT
table_name,
column_name,
data_type,
data_length,
data_precision,
data_scale,
nullable
FROM all_tab_columns@&my_db_link -- second environment
WHERE owner = ''''&OWNER2''''
order by table_name, column_name
8. obj_coord.sql
--
-- obj_coord.sql
--
-- To find out any difference in objects between two instances
--
-- 12/08/98
SELECT object_name, object_type
FROM user_objects
MINUS
SELECT object_name, object_type
FROM user_objects@&my_db_link
六. 参考文献
1. Loney, Kevin Oracle8 DBA Handbook
2. Cook, David Database Management from Crisis to Confidence
[http://www.orapub.com/]
3. Cox, Thomas B. The Database Administration Maturity Model
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