========= Create response File =
vi /tmp/dbcreate.rsp
================================

responseFileVersion=/oracle/assistants/rspfmt_dbca_response_schema_v12.2.0
templateName=General_Purpose.dbc 
gdbName=?????
sid=?????
sysPassword=?????
systemPassword=?????
emExpressPort=5500
dbsnmpPassword=?????
characterSet=AL32UTF8 
datafileDestination=?????
recoveryAreaDestination=?????
storageType=FS
totalMemory=4096


============================
-- Create database
============================

export ORACLE_SID=PutDBSidHere
export ORACLE_HOME=/apps/oracle/product/12.2.0.1/db
export PATH=$PATH:$ORACLE_HOME:$ORACLE_HOME/bin
which dbca

$ORACLE_HOME/bin/dbca -createDatabase  -silent  -responseFile  /tmp/dbcreate.rsp


============================
HELP
============================
dbca -help
dbca -createDatabase -help