Node id/Server id not found while starting 11i

Problem:
=======
While starting the concurrent the script says node id not found and the the while opening the forms we get the following error.

Solution:

Step 1 : Stop Apps Tier

Step 2 :

SQL> select server_id from fnd_nodes;
SERVER_ID
----------------------------------------------------------------

Now it shows Nothing.

Step 3: Backup the existing dbc and generate new dbc

/progs2/11i/uat/applmgr/uatappl/fnd/11.5.0/secure/uat_doyensys/uat_doyensys.dbc

mv uat_doyensys.dbc uat_doyensys_old.dbc

Step 4 : Run adgendbc.sh , So that this will generate a new dbc file.

/progs2/11i/uat/applmgr/uatcomn/admin/install/uat_doyensys/adgendbc.sh

sh adgendbc.sh apps apps

Step 5 : Now Run Autoconfig on both nodes.

Step 6 : Now check the Following:

SQL> select server_id from fnd_nodes;
SERVER_ID
----------------------------------------------------------------
SECURE
86CA4A081E008B32E043AC101BF58B3213785653262223406441150570220513

Step 7 : Now start apps.