Script for creating a multitenant database with dbca

Prerequisites:

You have a valid Oracle 19c installation in a server

You have set your Oracle environment already, so that your PATH, ORACLE_SID etc already exists when you execute your script

The script called run_dbca.sh:

#!/bin/bash
start=$(date +%s.%N)
export GLOGFILE=run_dbca.log
touch ${GLOGFILE}
chmod 666 ${GLOGFILE}
exec 1> ${GLOGFILE} 2>&1
echo "Now running run_dbca.sh"
echo "Resetting oratab..."
echo '' > /etc/oratab
if [ $? -ne 0 ]; then
 echo "Could not erase oratab. Exit."
 exit 1
else
 echo "oratab erased. Continuing..."
fi
export instanceAlive=`ps -ef| grep pmon | grep -v grep |awk '{ print $8}' | cut -f 3 -d"_"`

if [ ! -z ${instanceAlive} ]; then
 echo "Instance for database $ORACLE_SID is already running. Shut it down first"
 exit 1
fi
dbca -createDatabase -responsefile ./${ORACLE_SID}.rsp -silent
echo "Finished running run_dbca.sh"
dur=$(echo "$(date +%s.%N) - $start" | bc)
printf "Total execution time for run_dbca.sh: %.6f seconds\n" $dur
exit 0

The response file can be seen below. I saved it in a file called cdb.rsp and put it in the same directory.

I commented out most instructions, as they are not needed.

The original template db_install.rsp is delivered by default with your oracle installation and resides in your $ORACLE_HOME/install/response.

#-------------------------------------------------------------------------------
# Do not change the responseFileVersion diretive!
#-------------------------------------------------------------------------------
responseFileVersion=/oracle/assistants/rspfmt_dbca_response_schema_v19.0.0
gdbName=cdb.oric.no
sid=cdb
createAsContainerDatabase=true
numberOfPDBs=1
pdbName=pdb1
useLocalUndoForPDBs=true
pdbAdminPassword=mysecretpassword
templateName=New_Database.dbt
sysPassword=mysyspassword
systemPassword=mysystempassword
datafileDestination=/data01/oradata/cdb
recoveryAreaDestination=/data02/fra
characterSet=AL32UTF8
initParams=max_pdbs=3,db_create_file_dest_size=1024GB
memoryPercentage=75
automaticMemoryManagement=false
enableArchive=true
redoLogFileSize=2048
dbOptions=JSERVER:false,DV:false,ORACLE_TEXT:false,IMEDIA:false,CWMLITE:false,SPATIAL:false,OMS:false,APEX:false

Execute the script like this:

./run_dbca.sh

Follow the progression of the creation in the log run_dbca.log:

tail -f run_dbca.log

Sources:

Oracle 19c documentation: About creating a database with dbca

Oracle 19c documentation: Managing templates with dbca

Oracle-Base.com: Multitenant : Create and Configure a Pluggable Database (PDB) in Oracle Database 12c Release 1 (12.1) - still a relevant and good source.

Oracle-base.com: a dbca template

Oracle-base.com: Database Configuration Assistant (DBCA) : Creating Databases in Silent Mode