with networker module for oracle's backup ,waiting a long time,but no error

hi,

when I used the networker module backup the oracle,there is no error message and the backup can not successful,always waiting.the status as flow:
ORACLE>rman cmdfile=bck_arc.rcv

Recovery Manager: Release 8.1.7.4.0 - Production

RMAN> connect target backup/backup@db_dxsq;
2> connect rcvcat rmanyw/rmanyw@backup1;
3>
4> run
5> {
6> allocate channel t1 type 'sbt_tape'
7> parms 'ENV=(NSR_DATA_VOLUME_POOL=Default,NSR_SERVER=ndbackup,NSR_CLIENT=serv_dxsq)';
8>
9> #allocate channel t2 type 'sbt_tape'
10> #parms 'ENV=(NSR_DATA_VOLUME_POOL=Default,NSR_SERVER=ndbackup,NSR_CLIENT=serv_dxsq)';
11>
12> sql 'alter system archive log current';
13>
14> backup archivelog all
15> format 'arch_%t_%s_%p'
16> filesperset 10
17> skip inaccessible
18> delete input;
19>
20> release channel t1;
21> #release channel t2;
22>
23> }
24>
RMAN-06005: connected to target database: DB_DXSQ (DBID=3948924973)

RMAN-06008: connected to recovery catalog database

RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-08030: allocated channel: t1
RMAN-08500: channel t1: sid=16 devtype=SBT_TAPE
RMAN-08526: channel t1: BMO v3.0

RMAN-03022: compiling command: sql
RMAN-06162: sql statement: alter system archive log current
RMAN-03023: executing command: sql

RMAN-03022: compiling command: backup
RMAN-03025: performing implicit partial resync of recovery catalog
RMAN-03023: executing command: partial resync
RMAN-08003: starting partial resync of recovery catalog
RMAN-08005: partial resync complete
RMAN-03023: executing command: backup
RMAN-08009: channel t1: starting archivelog backupset
RMAN-08502: set_count=1 set_stamp=641252137 creation_time=13-DEC-07
RMAN-08014: channel t1: specifying archivelog(s) in backup set
RMAN-08504: input archivelog thread=1 sequence=39515 recid=1 stamp=641245872
RMAN-08504: input archivelog thread=1 sequence=39516 recid=2 stamp=641245899
RMAN-08504: input archivelog thread=1 sequence=39517 recid=3 stamp=641252136

NetWorker Server:networker 7.2.2 jumbo,Linux RedHat AS 4 u4
NetWorker Client:Networker 7.2.2 jumbo,AIX 51(32-bit)
NetWorker Module:NetWorker Modle 4.1 for Oracle 8.1.7.2(32-bit)

When the status had appeared,I had test the nmo 3.5,3.0 and 2.12,the status is the same as.
And I had test the sbttest,but not any message.

Waht can I do for this ?

Thanks.