NBU7.5备份报错，状态码24？

017-12-3 14:41:52 - connected; connect time: 00:00:03
2017-12-3 14:41:53 - Info bptm(pid=9936) start backup
2017-12-3 14:41:54 - Info bptm(pid=9936) backup child process is pid 9532.2132
2017-12-3 14:41:54 - Info bptm(pid=9532) start
2017-12-3 14:41:54 - begin writing
2017-12-3 14:59:24 - Error bpbrm(pid=9620) from client yy1k-gk-db: ERR - Cannot write to STDOUT. Errno = 110: 连接超时
2017-12-3 14:59:27 - Info bpbkar32(pid=64185) done. status: 24: socket write failed
2017-12-3 14:59:27 - end writing; write time: 00:17:33
socket write failed(24)

8:12:53.125 [8120.5624] <2> NBIORInterceptor::establish_components: +++ ENTERING +++ : obj = 015F93B8 (../NBIORInterceptor.cpp:69)
18:12:53.125 [8120.5624] <2> vnet_dnsquery_filter: [vnet_addrinfo.c:2073] About to DnsQuery() for host sxnbu
18:12:53.125 [8120.5624] <2> vnet_dnsquery_filter: [vnet_addrinfo.c:2083] No type A records returned by DnsQuery() 123 0x7b
18:12:53.125 [8120.5624] <2> NBIORInterceptor::establish_components: DNSQuery Lookup failed for host sxnbu error:123(NBIORInterceptor.cpp:94)
18:12:53.125 [8120.5624] <2> NBIORInterceptor::establish_components: --- EXITING --- : obj = 015F93B8 (../NBIORInterceptor.cpp:69)
18:12:53.125 [8120.5624] <2> Orb::activate: --- EXITING --- : obj = 0158F360 (../Orb.cpp:1231)
18:12:53.125 [8120.5624] <2> Orb::init: --- EXITING --- : obj = 0158F360 (../Orb.cpp:491)
18:12:53.125 [8120.5624] <2> Orb::connectToObject: Connection attempt #1 mW:30 rW:0(Orb.cpp:1167)
18:12:53.125 [8120.5624] <2> Orb::createInsecureObjectRef: +++ ENTERING +++ : obj = 0158F360 (../Orb.cpp:1432)
18:12:53.125 [8120.5624] <2> Orb::createInsecureObjectRef: corbaloc being used is: corbaloc:pbxiop:sxnbu:1556:nbjm/JOBINST(Orb.cpp:1440)
18:12:53.125 [8120.5624] <2> Orb::createInsecureObjectRef: --- EXITING --- : obj = 0158F360 (../Orb.cpp:1432)
18:12:53.125 [8120.5624] <2> Orb::connectToObjectOnce: attempt to create insecure connection(Orb.cpp:1034)

2:20:12.736 [57059] <4> VxBSAGetEnv: INF - entering GetEnv - NBBSA_POLICY
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - returning -
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.436: errno: 2 2 0x00000002
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.437: path: /home/oracle/bp.conf
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - entering GetEnv - NBBSA_SCHEDULE
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - returning -
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.436: errno: 2 2 0x00000002
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.437: path: /home/oracle/bp.conf
12:20:12.736 [57059] <4> dbc_GetServerClientConfig: entering dbc_GetServerClientConfig.
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.436: errno: 2 2 0x00000002
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.437: path: /home/oracle/bp.conf
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.436: errno: 2 2 0x00000002
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.437: path: /home/oracle/bp.conf
12:20:12.736 [57059] <4> dbc_GetServerClientConfig: ServerName: <sxnbu>, ClientName: <yy1k-gk-db>
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.436: errno: 2 2 0x00000002
12:20:12.736 [57059] <2> conf_update_time: ../../libvlibs/nbconf_glue.cpp.437: path: /home/oracle/bp.conf
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - entering GetEnv - BSA_SERVICE_HOST
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - returning - sxnbu
12:20:12.736 [57059] <4> VxBSAGetEnv: INF - entering GetEnv - NBBSA_CLIENT_HOST

看不太懂，请大神指点。