Muitas vezes nos deparamos com problemas ao instalar a versão do Oracle 10g ou 11g Express Edition no Linux (normalmente no Ubuntu), e precisamos remover toda instalação para tentar re-instalar novamente. Abaixo segue um Script para Limpeza total do Oracle XE na sua maquina, basta copiar e colar em seu prompt de comando com usuário SUDO para ter as permissões necessárias para executar os comandos. Abaixo segue alguns dos erros que normalmente ocorrem ao instalar o Oracle: Erro 1: ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Erro 2: Erro ao desinstalar pelo Synaptic Erro 3: Starting Oracle Database 10g Express Edition Instance. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE))) TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error TNS-00511: No listener Linux Error: 2: No such file or directory Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=cataserver)(PORT=1521))) TNS-12545: Connect failed because target host or object does not exist TNS-12560: TNS:protocol adapter error TNS-00515: Connect failed because target host or object does not exist Abaixo segue o script para resolver todos os seus problemas: sudo dpkg -r oracle-xe-universal sudo dpkg -r oracle-xe sudo dpkg -r oracle-xe:i386 sudo dpkg –purge oracle-xe-universal sudo dpkg –purge oracle-xe sudo dpkg –purge oracle-xe:i386 sudo rm -rf /usr/lib/oracle/xe sudo rm -rf /etc/oratab sudo rm -rf /etc/init.d/oracle-xe sudo rm -rf /etc/sysconfig/oracle-xe cd / sudo rm -rf ./usr/lib/openoffice/program/openintro_ubuntu_oracle.bmp sudo rm -rf ./usr/lib/openoffice/program/openabout_ubuntu_oracle.bmp sudo rm -rf ./usr/lib/oracle sudo rm -rf ./tmp/.oracle sudo rm -rf ./etc/rc6.d/K20oracle-xe sudo rm -rf ./etc/rc0.d/K20oracle-xe sudo rm -rf ./etc/rc2.d/S20oracle-xe sudo rm -rf ./etc/rc3.d/S20oracle-xe sudo rm -rf ./etc/default/oracle-xe sudo rm -rf ./etc/rc4.d/S20oracle-xe sudo rm -rf ./etc/xdg/menus/oraclexe.menu sudo rm -rf ./etc/rc1.d/K20oracle-xe sudo rm -rf ./etc/rc5.d/S20oracle-xe sudo rm -rf ./var/tmp/.oracle sudo rm -rf ./var/lib/update-rc.d/oracle-xe sudo rm -rf ./var/lib/dpkg/info/oracle-xe-universal.postrm sudo rm -rf ./var/lib/dpkg/info/oracle-xe-universal.list sudo rm -rf /usr/lib/oracle/xe sudo rm -rf /etc/oratab sudo rm -rf /etc/init.d/oracle-xe sudo rm -rf /etc/sysconfig/oracle-xe cd / sudo rm -rf ./usr/lib/openoffice/program/openintro_ubuntu_oracle.bmp sudo rm -rf ./usr/lib/openoffice/program/openabout_ubuntu_oracle.bmp sudo rm -rf ./usr/lib/oracle sudo rm -rf ./tmp/.oracle sudo rm -rf ./etc/rc6.d/K20oracle-xe sudo rm -rf ./etc/rc0.d/K20oracle-xe sudo rm -rf ./etc/rc2.d/S20oracle-xe sudo rm -rf ./etc/rc3.d/S20oracle-xe sudo rm -rf ./etc/default/oracle-xe sudo rm -rf ./etc/rc4.d/S20oracle-xe sudo rm -rf ./etc/xdg/menus/oraclexe.menu sudo rm -rf ./etc/rc1.d/K20oracle-xe sudo rm -rf ./etc/rc5.d/S20oracle-xe sudo rm -rf ./var/tmp/.oracle sudo rm -rf ./var/lib/update-rc.d/oracle-xe sudo rm -rf ./var/lib/dpkg/info/oracle-xe-universal.postrm sudo rm -rf ./var/lib/dpkg/info/oracle-xe-universal.list sudo rm -rf ./root/.sqldeveloper/system1.5.5.59.69/oracle.javatools.cache sudo rm -rf ./usr/share/vim/vim72/syntax/sqloracle.vim sudo rm -rf ./var/lib/dpkg/info/oracle-xe.list sudo rm -rf ./var/lib/dpkg/info/oracle-xe.postrm sudo rm -rf ./etc/rc3.d/S20oracle-xe sudo rm -rf ./etc/rc4.d/S20oracle-xe sudo rm -rf ./etc/rc0.d/K20oracle-xe sudo rm -rf ./etc/rc5.d/S20oracle-xe sudo rm -rf ./etc/rc6.d/K20oracle-xe sudo rm -rf ./etc/rc1.d/K20oracle-xe sudo rm -rf ./etc/init.d/oracle-xe sudo rm -rf ./etc/rc2.d/S20oracle-xe sudo rm -rf ./etc/default/oracle-xe sudo rm -rf ./etc/xdg/menus/oraclexe.menu sudo rm -rf ./usr/lib/oracle sudo rm -rf ./usr/lib/oracle/xe/app/oracle sudo rm -rf ./var/tmp/.oracle sudo rm -rf ./var/lib/dpkg/info/oracle-xe.list sudo rm -rf ./var/lib/dpkg/info/oracle-xe.postrm sudo rm -rf ./var/lib/update-rc.d/oracle-xe sudo -s /etc/init.d/oracle-xe stop ps -ef | grep oracle | grep -v grep | awk ‘{print $2}’ | xargs kill dpkg –purge oracle-xe rm -r /u01 rm /etc/default/oracle-xe update-rc.d -f oracle-xe remove   Abraços e até a Próxima /:-D     Related PostsInstalação Oracle SOASuite 11g – Parte 7: Oracle JDeveloperInstalação Oracle SOASuite 11g – Parte 1: Oracle Database XE 11gLimpando Memória Cache e Swap Linux – Ubuntu