ORA-12154: TNS:could not resolve the connect identifier specified” error during DBCA

While trying to install Oracle Database 11gR2 on Windows 2012R2 I faced the following error :-

ORA-12154: TNS:could not resolve the connect identifier specified” error during DBCA

After checking the logs and investigate about the issue  :-

The password was containing “@” after removed it from the password everything works perfectly.

Thanks
Osama 

Unable to retrieve config file from Database

The above error shown up when trying to install APPS and connect it to the RAC/single database to fix this issue Just copy the configuration file after the installation is done successfully under the path :- /ebs1stag/oracle/SEBSDB/12.1.0/appsutil for example  the file name usually conf_SEBSDB.txt and load the file, try again.
Thank you
Osama