ORACLE XE Not Available

Question

Hi All:
I've been using Oracle Express Edition for a while, but today it has stopped working. The service is starting correctly but not the database, as you can see below.
net start OracleServiceXE
The OracleServiceXE service is starting.
The OracleServiceXE service was started successfully.
sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jan 11 16:33:50 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> conn system/password
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Any idea?
Thanks.

Answer 1

Maybe it can help you.
Wed Jan 10 18:44:51 2007
ALTER SYSTEM SET sga_target='1000M' SCOPE=SPFILE;
Wed Jan 10 18:54:28 2007
Memory Notification: Library Cache Object loaded into SGA
Heap size 3823K exceeds notification threshold (2048K)
Details in trace file e:\oraclexe\app\oracle\admin\xe\bdump\xe_s000_1688.trc
KGL object name :with sqlplan as (
select c006 object_owner, c007 object_type,c008 object_name
from htmldb_collections
where COLLECTION_NAME='HTMLDB_QUERY_PLAN'
and c007 in ('TABLE','INDEX','MATERIALIZED VIEW','INDEX (UNIQUE)')),
ws_schemas as(
select schema
from wwv_flow_company_schemas
where security_group_id = :flow_security_group_id),
t as(
select s.object_owner table_owner,s.object_name table_name,
d.OBJECT_ID
from sqlplan s,sys.dba_objects d