*Good Morning List,* ** *Do you know why the SQL*PLUS easy connect below failed with ORA-12154?* H:\>sqlplus tsdba/xxxxxx@UPS60D0 SQL*Plus: Release 10.2.0.1.0 - Production on Thu Aug 6 10:12:37 2009 Copyright (c) 1982, 2005, Oracle. All rights reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> quit Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options *H:\>sqlplus **tsdba/xxxxxx@bplnap11:1527/UPS60D0*<tsdba/xxxxxx@bplnap11:1527/UPS60D0> *SQL*Plus: Release 10.2.0.1.0 - Production on Thu Aug 6 10:13:13 2009* *Copyright (c) 1982, 2005, Oracle. All rights reserved.* *ERROR: ORA-12154: TNS:could not resolve the connect identifier specified* *Enter user-name: ERROR: ORA-12560: TNS:protocol adapter error * Thanks, Roger Xu P.S. tnsnames.ora entry - UPS60D0 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = bplnap11)(PORT = 1527)) ) (CONNECT_DATA = (SERVICE_NAME = ups60d0) ) )