本人使用NBU5.0备份ORACLE数据库时，采用备份到磁盘的方式，但备份时发现日志报告：

INF - RMAN-10035: exception raised in RPC: ORA-19624: 操作失败，如果可能请重试
INF - ORA-19554: 配置设备时出错，设备类型: SBT_TAPE、设备名称:
INF - ORA-19557: 设备错误、设备类型: SBT_TAPE、设备名称:

我记得以前备份到磁盘不需要改什么设置啊，需要做其它设置吗？
由于现在没有磁带库，只能备份到硬盘！


具体日志如下：


F - Begin progress logging for process: (1360.1464)
INF - Using policy oracle to perform a user directed Standard backup.
INF - Starting Oracle Recovery Manager.
INF - Using: "d:\oracle\ora81\bin\rman.exe"
INF - Connection info: target 'sys/*****@ora8' nocatalog
INF - Start of Recovery Manager input.
INF - # -----------------------------------------------------------------
INF - # RMAN command section
INF - # -----------------------------------------------------------------
INF - RUN {
INF - ALLOCATE CHANNEL ch00
INF - TYPE 'SBT_TAPE';
INF - SEND 'NB_ORA_CLIENT=test1,NB_ORA_SERV=test1';
INF - BACKUP
INF - INCREMENTAL LEVEL=0
INF - FORMAT 'bk_u%u_s%s_p%p_t%t'
INF - DATABASE;
INF - RELEASE CHANNEL ch00;
INF - # Backup Archived Logs
INF - sql 'alter system archive log current';
INF - ALLOCATE CHANNEL ch00
INF - TYPE 'SBT_TAPE';
INF - SEND 'NB_ORA_CLIENT=test1,NB_ORA_SERV=test1';
INF - BACKUP
INF - FORMAT 'arch-s%s-p%p-t%t'
INF - ARCHIVELOG
INF - ALL
INF - DELETE INPUT;
INF - RELEASE CHANNEL ch00;
INF - # Control file backup
INF - ALLOCATE CHANNEL ch00
INF - TYPE 'SBT_TAPE';
INF - SEND 'NB_ORA_CLIENT=test1,NB_ORA_SERV=test1';
INF - BACKUP
INF - FORMAT 'bk_u%u_s%s_p%p_t%t'
INF - CURRENT CONTROLFILE;
INF - RELEASE CHANNEL ch00;
INF - }
INF - End of Recovery Manager input.
INF - Start of Recovery Manager output.
INF - 恢复管理器：版本8.1.6.0.0 - Production
INF - RMAN-06005：连接到目标数据库：ORA8 (DBID=1375525336)
INF - RMAN-06009：正在使用目标数据库控制文件替代恢复目录
INF - RMAN>
INF - RMAN># -----------------------------------------------------------------
INF - RMAN-03022：正在编译命令：allocate
INF - RMAN-03023：正在执行命令：allocate
INF - RMAN-00571: ===========================================================
INF - RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
INF - RMAN-00571: ===========================================================
INF - RMAN-03007: retryable error occurred during execution of command: allocate
INF - RMAN-07004: unhandled exception during command execution on channel ch00
INF - RMAN-10035: exception raised in RPC: ORA-19624: 操作失败，如果可能请重试
INF - ORA-19554: 配置设备时出错，设备类型: SBT_TAPE、设备名称:
INF - ORA-19557: 设备错误、设备类型: SBT_TAPE、设备名称:
INF - ORA-27000: skgfqsbi: 无法初始化存储子系统 (SBT) 层
INF - ORA-19511: SBT error = 4110, errno = 0, BACKUP_DIR environment variable is not set
INF - ORA-06512: 在"SYS.DBMS_BACKUP_RESTORE", line 138
INF - RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.DEVICEALLOCATE
INF - 恢复管理器完成。
INF - End of Recovery Manager output.

备份到磁盘的时候类型式disk而不是sbt_tape

如果是用磁盘模拟磁带或者有磁带库是sbt_tape

并且要修改你oracle的link文件

似乎比较麻烦啊，能告诉具体的方法吗？

装oracle agent了吗

NBU 5的ORACLE Agent已经在安装BASE时进行了自动安装，这个肯定没有问题，就是不知为何报这种错误

1、到otn.oracle.com去下载Oracle Recovery Manager User's Guide and Reference
2、allocate channel的type不是sbt_tape,是disk

NBU 5的ORACLE Agent已经在安装BASE时进行了自动安装?
这话有什么根据,agent是用一单独的光盘安装的,上面内容好像是'
'option and database agent',要单装的,
再有,装完后,要把数据库停下来,链接一下库文件,你再检查一下,

5.0确实有Agent光盘，可里面都是for UNIX的，这个在4.5里确实需要单独安装，5.0已经不需要了啊

不对吧,哪有这事啊,没听说过