求助关于NBU6.5.2备份AIX oracle数据库的问题

Question

大家好！
我是一台aix 6.1的NBU客户端，安装了ORACLE10G
现在情况是备份文件正常，发起RMAN的话失败。
报错：
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ch00 channel at 05/30/2011 17:07:35
ORA-19506: failed to create sequential file, name="bk_1_1_752518340", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
   VxBSACreateObject: Failed with error:
   Server Status:  Communication with the server has not been initiated or the server status has not been retrieved from the serve

RMAN> RMAN>
请帮忙看看是什么问题啊。

Answer 1

Oracle agent正常安装了吗？

Answer 2

REQUIRED_INTERFACE =