Development Environment:

Install Oracle XE

on CentOS, check tmpfs in /etc/fstab

none    /dev/shm    tmpfs    defaults,size=2G      0 0

df -h /dev/shm

CONNECT AS SYSDBA

Username: SYSTEM

SELECT
username,
default_tablespace,
profile,
authentication_type
FROM
dba_users
WHERE
account_status = ‚OPEN‘;

SELECT TABLESPACE_NAME, STATUS, CONTENTS FROM USER_TABLESPACES;

CREATE USER john IDENTIFIED BY passwordhere DEFAULT TABLESPACE USERS QUOTA UNLIMITED ON USERS;

GRANT CREATE SESSION TO john;

GRANT CREATE TABLE, CREATE VIEW, CREATE PROCEDURE, CREATE SEQUENCE TO john