title: ORA-01034: ORACLE not available error when configuring Oracle ApEx
body: <p>I want to configure on Ubuntu system the Oracle Application Express and when I sudo /etc/init.d/oracle-xe configure it (I added oracle to localhost in etc/hosts) it is still not working. These are my log files:</p>
  
  <p>cloneDBCreation.log</p>
  
  <pre><code> Create controlfile reuse set database "XE"
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  BEGIN dbms_backup_restore.zerodbid(0); END;
  
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  ORA-01034: ORACLE not available
  ORA-27101: shared memory realm does not exist
  Linux-x86_64 Error: 2: No such file or directory
  ORA-00845: MEMORY_TARGET not supported on this system
  Create controlfile reuse set database "XE"
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter system enable restricted session
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter database "XE" open resetlogs
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter database rename global_name to "XE"
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter system switch logfile
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter system checkpoint
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter database drop logfile group 3
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/XE/temp.dbf' SIZE 20480K REUSE AUTOEXTEND ON NEXT 640K MAXSIZE UNLIMITED
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  select tablespace_name from dba_tablespaces where tablespace_name='USERS'
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  select sid, program, serial#, username from v$session
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter user sys identified by "oracle"
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter user system identified by "oracle"
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  alter system disable restricted session
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 `
  
  CloneRmanRestore.log
  
      ORA-00845: MEMORY_TARGET not supported on this system
  select TO_CHAR(systimestamp,'YYYYMMDD HH:MI:SS') from dual
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  declare
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  select TO_CHAR(systimestamp,'YYYYMMDD HH:MI:SS') from dual
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  postDBCreation.log
  
      begin
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  
  File created.
  
  ORA-01034: ORACLE not available
  ORA-27101: shared memory realm does not exist
  Linux-x86_64 Error: 2: No such file or directory
  ORA-00845: MEMORY_TARGET not supported on this system
  select 'utl_recomp_begin: ' || to_char(sysdate, 'HH:MI:SS') from dual
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  BEGIN utl_recomp.recomp_serial(); END;
  
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  select 'utl_recomp_end: ' || to_char(sysdate, 'HH:MI:SS') from dual
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 `
  
  postScripts.log
  
      CREATE OR REPLACE LIBRARY dbms_sumadv_lib AS '/u01/app/oracle/product/11.2.0/xe/lib/libqsmashr.so';
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  BEGIN dbms_datapump_utl.replace_default_dir; END;
  
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  commit
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  create or replace directory XMLDIR as '/u01/app/oracle/product/11.2.0/xe/rdbms/xml'
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  DROP DIRECTORY ORACLE_OCM_CONFIG_DIR
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  DROP DIRECTORY ADMIN_DIR
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  DROP DIRECTORY WORK_DIR
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  BEGIN dbms_swrf_internal.cleanup_database(cleanup_local =&gt; FALSE); END;
  
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  
  
  commit
  *
  ERROR at line 1:
  ORA-01034: ORACLE not available 
  Process ID: 0 
  Session ID: 0 Serial number: 0 
  </code></pre>
  
  <p>this is my localhost:</p>
  
  <p>127.0.0.1 localhost.localdomain localhost LatitudeE7240</p>
  
  <p>::1 LatitudeE7240 localhost6.localdomain6 localhost6</p>
  
  <p>127.0.1.1 LatitudeE7240</p>
  
  <p>127.0.0.1 localhost LatitudeE7240</p>