onparams命令卡住不动

[informix@localhost ~]$ onparams --
shared memory not initialized for INFORMIXSERVER 'ids11701'
[informix@localhost ~]$ onstat -

IBM Informix Dynamic Server Version 11.50.UC9 -- On-Line -- Up 00:16:09 -- 144148 Kbytes

[informix@localhost ~]$ env | grep INFO
INFORMIXDIR=/opt/IBM/informix
INFORMIXSERVER=ids11701
INFORMIXSQLHOSTS=/opt/IBM/informix/etc/sqlhosts


请问这是怎么回事？数据库明明是启动的，onparams命令却不可以使用，其他的命令都可以收起