Oracle提供命令行工具DBV用来检查数据文件的完好性.
那么DBV可以用来检查日志文件么?
答案是不能.
Oracle在文档中这样描述DBV工具:
DBVERIFY is an external command-line utility that performs a physical data structure integrity check. It can be used on offline or online databases, as well on backup files.
DBVERIFY checks are limited to cache-managed blocks (that is, data blocks). Because DBVERIFY is only for use with datafiles, it will not work against control files or redo logs.
再次注意到读文档是有好处的,以前并不知道DBV可以直接用来针对数据段进行检查,引用一个文档中的例子:
这是命令格式:
| dbv USERID=username/password SEGMENT_ID=tsn.segfile.segblock |
假定hr用户具有sysdba权限,执行:
| dbv USERID=hr/hr SEGMENT_ID=1.2.67 |
输出如下:
DBVERIFY - Verification starting : SEGMENT_ID = 1.2.67
DBVERIFY - Verification complete
Total Pages Examined : 8
Total Pages Processed (Data) : 0
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 1
Total Pages Failing (Index): 0
Total Pages Processed (Other): 2
Total Pages Processed (Seg) : 1
Total Pages Failing (Seg) : 0
Total Pages Empty : 4
Total Pages Marked Corrupt : 0
Total Pages Influx : 0
Highest block SCN : 7358 (0.7358) |
【责编:wayen】
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2006-5-9
