command to upgrade and uninstall Oracle database software _oracle

View version number

Sqlplus/as sysdba

>select * from V$version;

backing up the ORCL database

Export ORACLE_SID=ORCL

rman targer/

>backup full database plus archivelog;

Upgrade
./runinstall Installation Upgrade Pack

Sqlplus/as sysdba

>startup upgrade
>@ $ORACLE _home/rdbms/admin/catupgrd.sql
>shutdown Immediate
>startup
>@ $ORACLE _home/rdbms/admin/utlrp.sql
>select * from Utl_recomp_errors; ----------> No selected lines description error free

Check

>select name from v$database-------> Confirm Oracle_sid is correct, oral
>show user-------> confirm current consumer as SYS
> Select Tablespace_name,bytes from dba_data_files------> Confirm table space size
>@ $ORACLE _home/rdbms/admin/catalog.sql
>shutdown Immediate
>startup

Manually Uninstall Oracle:

/etc/ora*
/usr/local/bin/oraenv
/usr/local/bin/dbhome
/usr/local/bin/coraenv
$ORACLE _base/*