至顶网›软件频道 ›Oracle10g v$database视图SCN增强

Oracle10g v$database视图SCN增强

扫一扫
分享文章到微信
扫一扫
关注官方公众号
至顶头条

在Oracle10g中,Oracle对v$database视图做出增强,增加了很多字段,其中一个重要字段是:CURRENT_SCN,代表数据库当前的SCN: SQL> select * from v$version; BANNER ---------

作者：中国IT实验室来源：中国IT实验室 2007年10月7日

关键字： ORACLE

在本页阅读全文(共2页)

v$database在Oracle10g中构建的语句如下,引用供参考:

SELECT di.inst_id, di.didbi, di.didbn,
TO_DATE (di.dicts, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
TO_NUMBER (di.dirls),
TO_DATE (di.dirlc, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
TO_NUMBER (di.diprs),
TO_DATE (di.diprc, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
DECODE (di.dimla, 0, 'NOARCHIVELOG', 1, 'ARCHIVELOG', 'MANUAL'),
TO_NUMBER (di.discn), TO_NUMBER (di.difas),
DECODE (BITAND (di.diflg, 256),
256, 'CREATED',
DECODE (BITAND (di.diflg, 1024),
1024, 'STANDBY',
DECODE (BITAND (di.diflg, 32768),
32768, 'CLONE',
DECODE (BITAND (di.diflg, 4096),
4096, 'BACKUP',
'CURRENT'
)
)
)
),
TO_DATE (di.dicct, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
di.dicsq, TO_NUMBER (di.dickp_scn),
TO_DATE (di.dickp_tim, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
DECODE (BITAND (di.diflg, 4),
4, 'REQUIRED',
DECODE (di.diirs, 0, 'NOT ALLOWED', 'ALLOWED')
),
TO_DATE (di.divts, 'MM/DD/RR HH24:MI:SS', 'NLS_CALENDAR=Gregorian'),
DECODE (di.didor,
0, 'MOUNTED',
DECODE (di.didor, 1, 'READ WRITE', 'READ ONLY')
),
DECODE (BITAND (di.diflg, 65536),
65536, 'MAXIMUM PROTECTION',
DECODE (BITAND (di.diflg, 128),
128, 'MAXIMUM AVAILABILITY',
DECODE (BITAND (di.diflg, 134217728),
134217728, 'RESYNCHRONIZATION',
DECODE (BITAND (di.diflg, 8),
8, 'UNPROTECTED',
'MAXIMUM PERFORMANCE'
)
)
)
),
DECODE (di.diprt,
1, 'MAXIMUM PROTECTION',
2, 'MAXIMUM AVAILABILITY',
3, 'RESYNCHRONIZATION',
4, 'MAXIMUM PERFORMANCE',
5, 'UNPROTECTED',
'UNKNOWN'
),
DECODE (di.dirae,
0, 'DISABLED',
1, 'SEND',
2, 'RECEIVE',
3, 'ENABLED',
'UNKNOWN'
),
TO_NUMBER (di.diacid), TO_NUMBER (di.diacid),
DECODE (BITAND (di.diflg, 33554432),
33554432, 'LOGICAL STANDBY',
DECODE (BITAND (di.diflg, 1024),
1024, 'PHYSICAL STANDBY',
'PRIMARY'
)
),
TO_NUMBER (di.diars),
DECODE (BITAND (difl2, 1), 1, 'ENABLED', 'DISABLED'),
DECODE (di.disos,
0, 'IMPOSSIBLE',
1, 'NOT ALLOWED',
2, 'SWITCHOVER LATENT',
3, 'SWITCHOVER PENDING',
4, 'TO PRIMARY',
5, 'TO STANDBY',
6, 'RECOVERY NEEDED',
7, 'SESSIONS ACTIVE',
8, 'PREPARING SWITCHOVER',
9, 'PREPARING DICTIONARY',
10, 'TO LOGICAL STANDBY',
'UNKNOWN'
),
DECODE (di.didgd, 0, 'DISABLED', 'ENABLED'),
DECODE (BITAND (di.diflg, 1048576),
1048576, 'ALL',
DECODE (BITAND (di.diflg, 2097152),
2097152, 'STANDBY',
'NONE'
)
),
DECODE (BITAND (diflg, 1073741824),
1073741824, 'YES',
DECODE (BITAND (diflg, 131072 + 262144 + 524288),
0, DECODE (BITAND (difl2, 2), 0, 'NO', 'IMPLICIT'),
'IMPLICIT'
)
),
DECODE (BITAND (di.diflg, 131072), 131072, 'YES', 'NO'),
DECODE (BITAND (di.diflg, 262144), 262144, 'YES', 'NO'),
DECODE (BITAND (di.diflg, 268435456), 268435456, 'YES', 'NO'),
di.diplid, di.dipln, di2.di2rdi, di2.di2inc, TO_NUMBER (di.dicur_scn),
DECODE (BITAND (di2.di2flag, 1),
1, 'YES',
DECODE (di2.di2rsp_oldest, 0, 'NO', 'RESTORE POINT ONLY')
),
DECODE (BITAND (diflg, 524288), 524288, 'YES', 'NO'),
DECODE (BITAND (difl2, 2), 2, 'YES', 'NO'), di.didbun,
TO_NUMBER (di2.di2actiscn),
DECODE (di.difsts,
0, 'DISABLED',
1, 'BYSTANDER',
2, 'SYNCHRONIZED',
3, 'UNSYNCHRONIZED',
4, 'SUSPENDED',
5, 'STALLED',
6, 'LOADING DICTIONARY',
7, 'PRIMARY UNOBSERVED',
8, 'REINSTATE REQUIRED',
9, 'REINSTATEIN PROGRESS',
10, 'REINSTATE FAILED',
''
),
di.diftgt, di.difths,
DECODE (di.difopr, 1, 'YES', 2, 'NO', 3, 'UNKNOWN', ''), di.difobs
FROM x$kccdi di, x$kccdi2 di2

此前获取SCN可以通过如下方法:

http://www.eygle.com/faq/How.To.Get.Current.SCN.of.Database.htm

查看本文来源

VIP专区

VIP用户

普通用户

邮件订阅

如果您非常迫切的想了解IT领域最新产品与技术信息，那么订阅至顶网技术邮件将是您的最佳途径之一。

重磅专题

往期文章

业界热点:

数字化转型东数西算自动驾驶智能制造云计算元宇宙虚拟人物联网算力网络数字孪生人工智能区块链开源大数据