猜猜问题是由于磁盘不足，因为/home目录只有10g多，所以做个映射到/oracle目录，这个/oracle目录有200多个G的大小。
mkdir -p /home/oradata ln -s /oracle/app/oracle/oradata/powerdes /home/oradata/powerdes然后继续执行restore恢复，restore成功，如下所示：
RMAN> restore database; Starting restore at 03-DEC-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00001 to /home/oradata/powerdes/system01.dbf channel ORA_DISK_1: restoring datafile 00002 to /home/oradata/powerdes/sysaux01.dbf channel ORA_DISK_1: restoring datafile 00003 to /home/oradata/powerdes/undotbs01.dbf channel ORA_DISK_1: restoring datafile 00004 to /home/oradata/powerdes/users01.dbf channel ORA_DISK_1: restoring datafile 00005 to /home/oradata/powerdes/powerdesk01.dbf channel ORA_DISK_1: restoring datafile 00006 to /home/oradata/powerdes/plas01.dbf channel ORA_DISK_1: restoring datafile 00007 to /home/oradata/powerdes/pl01.dbf channel ORA_DISK_1: restoring datafile 00008 to /home/oradata/powerdes/help01.dbf channel ORA_DISK_1: restoring datafile 00009 to /home/oradata/powerdes/adobelc01.dbf channel ORA_DISK_1: restoring datafile 00010 to /home/oradata/powerdes/sms01.dbf channel ORA_DISK_1: restoring datafile 00011 to /home/oradata/powerdes/plcrm01.dbf channel ORA_DISK_1: restoring datafile 00012 to /home/oradata/powerdes/powerdesk02.dbf channel ORA_DISK_1: restoring datafile 00013 to /home/oradata/powerdes/datagm01.dbf channel ORA_DISK_1: reading from backup piece /oracle/2015-12-02/full_POWERDES_20151202_5052.bak channel ORA_DISK_1: piece handle=/oracle/2015-12-02/full_POWERDES_20151202_5052.bak tag=TAG20151202T211859 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:25:45 Finished restore at 03-DEC-15 RMAN> 11，recover数据库 RMAN> recover database; Starting recover at 03-DEC-15 using channel ORA_DISK_1 starting media recovery RMAN-08187: WARNING: media recovery until SCN 11702491357 complete Finished recover at 03-DEC-15 RMAN> 12，打开数据库 alter database open resetlogs; RMAN> alter database open resetlogs; database opened RMAN> 13，登录验证 [oracle@oracle_yueworld admin]$ rlwrap sqlplus / as sysdba SQL*Plus: Release 11.2.0.1.0 Production on Thu Dec 3 21:03:53 2015 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Release 11.2.0.1.0 - 64bit Production SQL> select status from v$instance; STATUS ------------ OPEN SQL>