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  • 备份裸设备上的数据文件

    备份裸设备上的数据文件

    1.Using  dd is the fastest method to accomplis h this. However, it is

    necessary to know how many  blocks to skip in the  raw device (e.g.,

    on Tru64 UNI X you must skip 64 KB ) so that y ou do not overwrite

    inform ation necessary for the operating  system. The information on

    how many blocks to skip is different on differe nt platforms.
    注意需要跳过的数据块数量在不同os上是不同的

    # dd if=/dev/raw/raw1
    of=/u01/oradata/test_ts.dbf'  bs=16K 
    (Keep the  Block size to multiple  of the  Oracle Block Size)


    2.
    From file system to raw device:


    RMAN> run { 
        2> allocate channel c1 type disk; 
        3> copy datafile
             ‘/u01/oradata/test_ts.dbf' to
             '/dev/raw/raw1'; 
        4> }

    From raw device to file sy stem: 


    RMAN> run { 
        2> allocate channel c1 type disk; 
        3> copy datafile '/dev/raw/raw1' to
    '/u01/oradata/test_ts.dbf'; 
        4> } 

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  • 原文地址:https://www.cnblogs.com/james1207/p/3275718.html
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