Hi,
After Oracle 18c Automatic Storage management software is completed, i tried to start ASM instance but i got ORA-00845:MEMORY_TARGET not supported on this system error.
[oracle@MehmetSalih ~]$ sqlplus / as sysasm SQL*Plus: Release 18.0.0.0.0 - Production on Tue Feb 19 12:59:47 2019 Version 18.3.0.0.0 Copyright (c) 1982, 2018, Oracle. All rights reserved. Connected to an idle instance. SQL> startup ORA-00845: MEMORY_TARGET not supported on this system
To solve this error you need to mount tmpfs like below.
[root@MehmetSalih oradata]# mount -t tmpfs shmfs -o size=4096m /dev/shm [root@MehmetSalih oradata]# [oracle@MehmetSalih ~]$ df -h /dev/shm Filesystem Size Used Avail Use% Mounted on tmpfs 3.9G 119M 3.9G 1% /dev/shm
Do you want to learn Oracle Database for Beginners, then read the following articles.
https://ittutorial.org/oracle-database-19c-tutorials-for-beginners/