TSM6.2.1 备份ORACLE 11G R2 时报ANS1017E (RC-50)

channel c2: starting piece 1 at 20-DEC-11
RMAN-03009: failure of backup command on c2 channel at 12/20/2011 19:20:39
ORA-19502: write error on file "dbfull_770412038_17_1", block number 1569 (block size=8192)
ORA-27030: skgfwrt: sbtwrite2 returned error
ORA-19511: Error received from media manager layer, error text:
   ANS0326E (RC41)   This node has exceeded its maximum number of mount points.
channel c2 disabled, job failed on it will be run on another channel
released channel: c1
released channel: c2
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on c1 channel at 12/20/2011 19:32:54
ORA-19502: write error on file "dbfull_770412037_16_1", block number 5025505 (block size=8192)
ORA-27030: skgfwrt: sbtwrite2 returned error
ORA-19511: Error received from media manager layer, error text:
   ANS1017E (RC-50)  Session rejected: TCP/IP connection failure
请问咋解决？

最大mount点默认是1，要修改为2