关于AIX5.3 安装sybase时服务器启动失败问题

$ start_asiq @asiqdemo.cfg asiqdemo.db

Starting server AIX_asiqdemo on AIX at port 2638 (01/23 21:41:24)
Run Directory       : /sybase/ASIQ-12_7/demo
Server Executable   : /sybase/ASIQ-12_7/bin/asiqsrv12
Server Output Log   : /sybase/ASIQ-12_7/logfiles/AIX_asiqdemo.003.srvlog
Server Version      : 12.7.0/ESD 3
Open Client Version : 15.0/P-EBF13559 ESD #4
User Parameters     : [url=mailto:]'@asiqdemo.cfg'[/url] 'asiqdemo.db'
Default Parameters  : -gn 25
exec(): 0509-036 Cannot load program dbspawn because of the following errors:
rtld: 0712-001 Symbol __pth_init was referenced
      from module dbspawn(), but a runtime definition
      of the symbol was not found.
rtld: 0712-002 fatal error: exiting.
Server failed to start (Return Code 255)
服务器启动失败了  请问该怎么解决啊