nbu 异机恢复报RMAN-03009 ORA-19554 ORA-27211 错误

今天一个朋友在用nbu软件做异机恢复控制文件时,报以下错误：
If you are having the following Oracle errors on a linux system:
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of allocate command on t1 channel at 09/22/2004 11:03:58
ORA-19554: error allocating device, device type: SBT_TAPE, device name:
ORA-27211: Failed to load Media Management Library

通过查询nbu 网站，解释说oracle 需要对nbu 软件做链接 (libobk.so)
解决方法如下：
You can probably fix this by linking your oracle library (libobk.so) to netbackup library...

cd $ORACLE_HOME/lib
ln -s /usr/openv/netbackup/bin/libobk.so

You can use libobk.so64 instead, if you are using an 64-bit operating system...