数据字典表之：DBA_TABLES

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数据字典表 DBA_TABLES 与 ALL_TABLES 字段结构相同，其创建语句如下（以下脚本来自Oracle10g 10.2.0.3）：

CREATE OR REPLACE FORCE VIEW SYS.dba_tables (owner,
table_name,
tablespace_name,
cluster_name,
iot_name,
status,
pct_free,
pct_used,
ini_trans,
max_trans,
initial_extent,
next_extent,
min_extents,
max_extents,
pct_increase,
FREELISTS,
freelist_groups,
LOGGING,
backed_up,
num_rows,
blocks,
empty_blocks,
avg_space,
chain_cnt,
avg_row_len,
avg_space_freelist_blocks,
num_freelist_blocks,
DEGREE,
INSTANCES,
CACHE,
table_lock,
sample_size,
last_analyzed,
partitioned,
iot_type,
TEMPORARY,
secondary,
NESTED,
BUFFER_POOL,
row_movement,
global_stats,
user_stats,
DURATION,
skip_corrupt,
MONITORING,
cluster_owner,
dependencies,
compression,
dropped
)
AS
SELECT u.NAME, o.NAME,
DECODE (BITAND (t.property, 2151678048), 0, ts.NAME, NULL),
DECODE (BITAND (t.property, 1024), 0, NULL, co.NAME),
DECODE ((BITAND (t.property, 512) + BITAND (t.flags, 536870912)),
0, NULL,
co.NAME
),
DECODE (BITAND (t.trigflag, 1073741824),
1073741824, 'UNUSABLE',
'VALID'
),
DECODE (BITAND (t.property, 32 + 64),
0, MOD (t.pctfree$, 100),
64, 0,
NULL
),
DECODE (BITAND (ts.flags, 32),
32, TO_NUMBER (NULL),
DECODE (BITAND (t.property, 32 + 64),
0, t.pctused$,
64, 0,
NULL
)
),
DECODE (BITAND (t.property, 32), 0, t.INITRANS, NULL),
DECODE (BITAND (t.property, 32), 0, t.MAXTRANS, NULL),
s.iniexts * ts.BLOCKSIZE,
DECODE (BITAND (ts.flags, 3),
1, TO_NUMBER (NULL),
s.extsize * ts.BLOCKSIZE
),
s.minexts, s.maxexts,
DECODE (BITAND (ts.flags, 3), 1, TO_NUMBER (NULL), s.extpct),
DECODE (BITAND (ts.flags, 32),
32, TO_NUMBER (NULL),
DECODE (BITAND (o.flags, 2),
2, 1,
DECODE (s.lists, 0, 1, s.lists)
)
),
DECODE (BITAND (ts.flags, 32),
32, TO_NUMBER (NULL),
DECODE (BITAND (o.flags, 2),
2, 1,
DECODE (s.GROUPS, 0, 1, s.GROUPS)
)
),
DECODE (BITAND (t.property, 32 + 64),
0, DECODE (BITAND (t.flags, 32), 0, 'YES', 'NO'),
NULL
),
DECODE (BITAND (t.flags, 1), 0, 'Y', 1, 'N', '?'), t.rowcnt,
DECODE (BITAND (t.property, 64), 0, t.blkcnt, NULL),
DECODE (BITAND (t.property, 64), 0, t.empcnt, NULL), t.avgspc,
t.chncnt, t.avgrln, t.avgspc_flb,
DECODE (BITAND (t.property, 64), 0, t.flbcnt, NULL),
LPAD (DECODE (t.DEGREE, 32767, 'DEFAULT', NVL (t.DEGREE, 1)), 10),
LPAD (DECODE (t.INSTANCES, 32767, 'DEFAULT', NVL (t.INSTANCES, 1)),
10
),
LPAD (DECODE (BITAND (t.flags, 8), 8, 'Y', 'N'), 5),
DECODE (BITAND (t.flags, 6), 0, 'ENABLED', 'DISABLED'),
t.samplesize, t.analyzetime,
DECODE (BITAND (t.property, 32), 32, 'YES', 'NO'),
DECODE (BITAND (t.property, 64),
64, 'IOT',
DECODE (BITAND (t.property, 512),
512, 'IOT_OVERFLOW',
DECODE (BITAND (t.flags, 536870912),
536870912, 'IOT_MAPPING',
NULL
)
)
),
DECODE (BITAND (o.flags, 2), 0, 'N', 2, 'Y', 'N'),
DECODE (BITAND (o.flags, 16), 0, 'N', 16, 'Y', 'N'),
DECODE (BITAND (t.property, 8192),
8192, 'YES',
DECODE (BITAND (t.property, 1), 0, 'NO', 'YES')
),
DECODE (BITAND (o.flags, 2),
2, 'DEFAULT',
DECODE (s.cachehint,
0, 'DEFAULT',
1, 'KEEP',
2, 'RECYCLE',
NULL
)
),
DECODE (BITAND (t.flags, 131072), 131072, 'ENABLED', 'DISABLED'),
DECODE (BITAND (t.flags, 512), 0, 'NO', 'YES'),
DECODE (BITAND (t.flags, 256), 0, 'NO', 'YES'),
DECODE (BITAND (o.flags, 2),
0, NULL,
DECODE (BITAND (t.property, 8388608),
8388608, 'SYS$SESSION',
'SYS$TRANSACTION'
)
),
DECODE (BITAND (t.flags, 1024), 1024, 'ENABLED', 'DISABLED'),
DECODE (BITAND (o.flags, 2),
2, 'NO',
DECODE (BITAND (t.property, 2147483648),
2147483648, 'NO',
DECODE (ksppcv.ksppstvl, 'TRUE', 'YES', 'NO')
)
),
DECODE (BITAND (t.property, 1024), 0, NULL, cu.NAME),
DECODE (BITAND (t.flags, 8388608), 8388608, 'ENABLED', 'DISABLED'),
DECODE (BITAND (t.property, 32),
32, NULL,
DECODE (BITAND (s.spare1, 2048),
2048, 'ENABLED',
'DISABLED'
)
),
DECODE (BITAND (o.flags, 128), 128, 'YES', 'NO')
FROM SYS.user$ u,
SYS.ts$ ts,
SYS.seg$ s,
SYS.obj$ co,
SYS.tab$ t,
SYS.obj$ o,
SYS.obj$ cx,
SYS.user$ cu,
x$ksppcv ksppcv,
x$ksppi ksppi
WHERE o.owner# = u.user#
AND o.obj# = t.obj#
AND BITAND (t.property, 1) = 0
AND BITAND (o.flags, 128) = 0
AND t.bobj# = co.obj#(+)
AND t.ts# = ts.ts#
AND t.file# = s.file#(+)
AND t.block# = s.block#(+)
AND t.ts# = s.ts#(+)
AND t.dataobj# = cx.obj#(+)
AND cx.owner# = cu.user#(+)
AND ksppi.indx = ksppcv.indx
AND ksppi.ksppinm = '_dml_monitoring_enabled';