I am running Oracle 11g on Windows 7 Enterprise SP2 16 GB RAM, 1 TB HD. I can connect to Oracle using SQL Plus (see below),
C:>sqlplus sys/xxxxxxxxx@XE as sysdba
SQL*Plus: Release 126.96.36.199.0 Production on Wed Jul 9 18:52:26 2014 Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to: Oracle Database 11g Express Edition Release 188.8.131.52.0 - 64bit Production
... but when JDeveloper or another commercial application try to connect to I get the following error:
ORA-01033: Oracle initialization or shutdown in progress ...
Any clue or help would be really appreciated.