Error message :
<Mar 4, 2013 9:31:55 AM PST> <Info> <Security> <BEA-090065> <Getting boot identity from user.> 
Enter username to boot WebLogic server:<Mar 4, 2013 9:31:55 AM PST> <Error> <Security> <BEA-090782> <Server is Running in Production Mode and Native Library(terminalio) to read the password securely from commandline is not found.> 
<Mar 4, 2013 9:31:55 AM PST> <Notice> <WebLogicServer> <BEA-000388> <JVM called WLS shutdown hook. The server will force shutdown now
Soln:
Looks like  library "terminalio" is missing 
on your system, this is a OS related issue, however you can 
workaround this in weblogic by the following method.
Go to the domain / server / security folder for example : 
user_projects\domains\base_domain\servers\AdminServer\security
if
 security folder is not found under adminserver, go ahead an create it. 
and provide it 777 permissions (chmod -r -R 777 security)
for unix system ->
cd user_projects\domains\base_domain\servers\AdminServer\
mkdir security
chmod 777 security/
under
 security folder create a new file called boot.properties and enter the 
values of weblogic username and password and save + exit.
for unix system ->
cd security/
vi boot.properties
esc + i
username=XXXX
password=XXXX
esc + :wq
for windows system -> 
under security 
right click -> New Text Document.txt
open it
username=XXXX
password=XXXX
file - save as - 
file name : boot.properties 
save as type : All files 
save
repeat the same procedure for your managed server as well.
start your admin server