LoadRunner报错vuser_init.c(18): Error: nca_connect_server: cannot communicate

Virtual User Script. started at : 2013-10-09 22:51:13
Starting action vuser_init.
vuser_init.c(12): nca_set_connect_opt("INITIAL_DISP_SIZE")
vuser_init.c(14): nca_set_connect_opt("FONT_FACE")
vuser_init.c(16): nca_set_connect_opt("SCALE_INFO")
vuser_init.c(18): Error: nca_connect_server: cannot communicate with host nkgtsoserp01-vlx.huw.com on port 8005
Abort was called from an action.
R12安装后Form服务默认是Serverlet模式，且禁用Socket模式；只要按如下基本简单改动即可改成Socket模式，并允许Socket模式。
1. Source the environment on the application tier.
2. Stop all the application tier services:
$INST_TOP/admin/scripts/adstpall.sh
3. Run the following command to enable Forms Socket Mode:
$FND_TOP/bin/txkrun.pl -script=ChangeFormsMode \
-contextfile=$INST_TOP/appl/admin/.xml \
-mode=socket \
-port=9095 \
-runautoconfig=No
4.修改$INST_TOP/appl/admin/.xml，将appserverid_authentication修改为off 
5.执行autoConfig
$INST_TOP/admin/scripts/adautocfg.sh
6. Start all the application tier services:
$INST_TOP/admin/scripts/adstrtal.sh
7 Socket模式访问：
http://.:/OA_HTML/frmservlet

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