Blank space issue in tns names ora

ORA11G = /** No blank space at left. **/ (DESCRIPTION = /** have blank space or not at left is ok. **/ (ADDRESS = (PROTOCOL = TCP)(HOST = xx.xx.xx.xx)(PORT = 1521)) /** must have blank space at left. **/ (CONNECT_DATA = /** must have blank space at left. **/ (SERVER = DEDICATED) /** must have blank space at left. **/ (SERVICE_NAME = ora11g) /** must have blank space at left. **/ ) /** must have blank space at left. **/ ) /** have blank space or not at left is ok. **/

If the format about blank space is error, you will get the connection error as below:  ORA-12154: TNS:could not resolve the connect identifier specified