In Oracle Enterprise Linux 7 /tmp data is stored on tmpfs which consumes memory and is too small. To revert it back to storage just run following command and REBOOT machine to be effective.
--unizp software it will create directory "database"
--where you can find installation software
unzip linuxamd64_12c_database_1of2.zip
unzip linuxamd64_12c_database_2of2.zip
--I defined 4 aliases in .bash_profile of user oracle to make
--administration heaven :)
[oracle@centos7 ~]$ alias envo cdob cdoh tns
alias envo='env | grep ORACLE'
alias cdob='cd $ORACLE_BASE'
alias cdoh='cd $ORACLE_HOME'
alias tns='cd $ORACLE_HOME/network/admin'
--run alias command envo to display environment settings
envo
ORACLE_UNQNAME=ORA12C
ORACLE_SID=ORA12C
ORACLE_BASE=/ora01/app/oracle
ORACLE_HOSTNAME=centos7.dbaora.com
ORACLE_HOME=/ora01/app/oracle/product/12.1.0/db_1
--run alias command cdob and cdoh
--to check ORACLE_BASE, ORACLE_HOME
[oracle@centos7 ~]$ cdob
[oracle@centos7 oracle]$ pwd
/ora01/app/oracle
--run installation from "database" directory
./runInstall
1. Uncheck checkbox “I wish to receive security updates via My Oracle Support” and then click “Next” button.
2. Ignore following message and click “Yes” button.
3. Select “Skip software updates” and click “Next” button.
4. Ignore following message. Just click “Yes” button
5. Select “Create and configure a database” then click “Next” button.
6. Select “Desktop Class” and click “Next” button.
7. On the screen you need to define global database name and pluggable database name. Rest of options you can keep default. Then click “Next” button.
8. Accept default settings then click “Next” button.
9. Summary screen just before installation. It’s the last moment to make changes in previous steps. If you are ready click “Install” button.
10. Installation begins …
11. Unfortunately I received error during binaries linking
in log you should see
/usr/bin/ld: note: '__tls_get_addr@@GLIBC_2.3' is defined in
DSO /lib64/ld-linux-x86-64.so.2 so try adding it to the linker
command line /lib64/ld-linux-x86-64.so.2: could not read symbols:
Invalid operation
INFO: collect2: error: ld returned 1 exit status
12. To solve this problem do following as user Oracle
Once it’s done click “Retry” button on screen from point 11 to continue with installation. Linking should finish properly and binaries installation should continue.
13. In the end you will be asked to run as root two scripts. Once they are completed click “OK” button – installation will proceed.
18. Once binaries are installed automatically DBCA (database configuration assistant) will start to create new database.
19. You should see summary screen for your database. You can click “Password Management” to unlock and change passwords for default account. Click “OK” button.
20. Installation is finished. Click “Close” button.
21. Post installation steps
Edit the “/etc/oratab” file to set restart flag for ORA12C to ‘Y’.