用NBU备份DB2失败，请高手指教

NBU版本7.1，DB2版本v9.7.4，数据库在media server上，操作系统为AIX6.1
备份失败。
在media server的log下报错：
13:15:37.509 [11206864] <2> logparams: -sb -rdbms db2 -S x3850b01 -to 300 -c P780A02_db_policy -s Full -clnt P780A02 -FULL -kl 28 -b P780A02_1329973997 -jobid 35 -shm
13:15:37.515 [11206864] <4> ncfLogConfiguration: Module: libncf, Release: 7.1 , Build: 00/00/0000 00:00:00 CDT (00000000)
13:15:37.515 [11206864] <4> ncfLogConfiguration: System: AIX, P780A02, 1, 6, 00F6EE974C00, {5}
13:15:37.515 [11206864] <4> NcfString::logLocale: Current code page: ICU: ISO-8859-1, Max. character width: 1, Substitution character: 0x1A [.], Unicode substitution character: 0xfffd [?y]
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Running as user '0', primary group '0'
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable _=/usr/openv/netbackup/bin/bpcd
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable LANG=en_US
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable LOGIN=root
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable PATH=/usr/java6/bin:/usr/bin:/etc:/usr/sbin:/usr/ucb://bin:/usr/bin/X11:/sbin:.:/usr/bin
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable EXTENDED_HISTORY=ON
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable LC__FASTMSG=true
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable EDITOR=/usr/bin/vi
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable HISTFILE=//.sh_history_190.2.240.151
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable LOGNAME=root
13:15:37.515 [11206864] <4> Impersonate::logImpersonation: Environment variable MAIL=/usr/spool/mail/root
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable LOCPATH=/usr/lib/nls/loc
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable PS1=[P780A02][$USER][$PWD]#
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable USER=root
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable AUTHSTATE=compat
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable SHELL=/usr/bin/ksh
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable ODMDIR=/etc/objrepos
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable HISTSIZE=9000
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable HOME=/
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable TERM=xterm
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable MAILMSG=[YOU HAVE NEW MAIL]
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable PWD=/usr/openv/netbackup/bin/goodies
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable TZ=Asia/Shanghai
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable A__z=! LOGNAME
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable IS_NETBACKUP_DAEMON=YES
13:15:37.516 [11206864] <4> Impersonate::logImpersonation: Environment variable NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lib/nls/msg/%L/%N.cat
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_POLICY=P780A02_db_policy
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_SCHED=Full
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_SERVER=x3850b01
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_CLIENT=P780A02
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_FULL=1
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_INCR=0
13:15:37.516 [11206864] <4> bphdb main: INF - setenv DB2_CINC=0
13:15:37.517 [11206864] <4> bphdb main: INF - setenv DB2_USER_INITIATED=0
13:15:37.517 [11206864] <4> bphdb main: INF - setenv DB2_SCHEDULED=1
13:15:37.517 [11206864] <4> bphdb sync_server: INF - BACKUP START 11206864
13:15:37.643 [11206864] <4> bphdb sync_server: INF - CONTINUE BACKUP message received
13:15:37.643 [11206864] <2> bphdb get_filelist: INF - Read filename:
13:15:37.643 [11206864] <2> bphdb get_filelist: INF - Read filename:
13:15:37.643 [11206864] <4> bphdb do_backup: INF - Processing /db2inst/db2zzrun/scripts/db2_backup
13:15:37.646 [11206864] <4> bphdb do_backup: INF - Waiting for the child status
13:15:37.646 [16711818] <4> bphdb do_backup: INF - Child executing /db2inst/db2zzrun/scripts/db2_backup
13:15:44.646 [11206864] <16> bphdb do_backup: ERR - Script exited with status = 4
13:15:44.647 [11206864] <8> delete_old_files: WRN - Directory /usr/openv/netbackup/logs/bpdbsbdb2 does not exist
13:15:44.647 [11206864] <8> delete_old_files: WRN - Directory /usr/openv/netbackup/logs/bpubsdb2 does not exist
13:15:44.647 [11206864] <16> bphdb Exit: ERR - bphdb exit status = 6: the backup failed to back up the requested files
13:15:44.647 [11206864] <4> bphdb Exit: INF - EXIT STATUS 6: the backup failed to back up the requested files
在out的日志中报：
DB2_CLIENT = P780A02
DB2_SERVER = x3850b01
DB2_POLICY = P780A02_db_policy
DB2_SCHED = Full
DB2_FULL = 1
DB2_CINC = 0
DB2_INCR = 0
Executing: db2 BACKUP DATABASE bmmsrun online LOAD /usr/openv/netbackup/bin/nbdb2.sl64 OPEN 1 SESSIONS BUFFER 1024 include logs
[YOU HAVE NEW MAIL]
SQL2062N An error occurred while accessing media
"/usr/openv/netbackup/bin/nbdb2.sl64". Reason code: "514".
请高手指教如何解决。