ORA-19504、ORA-27040

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RMAN> RUN
{
2> 3> ALLOCATE CHANNEL c1 TYPE DISK;
4> BACKUP DATABASE FORMAT '/database/datafile_%d_%U';
5> BACKUP CURRENT CONTROLFILE format '/database/control_%d_%U';
6> Release CHANNEL c1;
7> }

allocated channel: c1
channel c1: SID=37 device type=DISK

Starting backup at 13-JAN-15
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
input datafile file number=00001 name=/u01/app/oracle/oradata/orcl/system01.dbf
input datafile file number=00003 name=/u01/app/oracle/oradata/orcl/undotbs01.dbf
input datafile file number=00002 name=/u01/app/oracle/oradata/orcl/sysaux01.dbf
input datafile file number=00004 name=/u01/app/oracle/oradata/orcl/users01.dbf
channel c1: starting piece 1 at 13-JAN-15
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on c1 channel at 01/13/2015 17:47:24

ORA-19504: failed to create file "/database/datafile_ORCL_04pskphb_1_1"

ORA-27040: file create error, unable to create file

尝试了网上的许多方法都不行，最后发现是权限问题，修改后就成功备份了。

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