Scenario setting: After completing the series 1 article, after installing oracle18c database, perform sqlplus / as sysdba, you can log in to oracle, but during startup, startup found abnormal startup. After debugging for a long time, I tried various manual configuration of .ora files, new creation of ctl, etc., all ended in failure, and finally used dbca to build a database to solve the problem.
首先复制一份$ORACLE_HOME/assistants/dbca/dbca.rsp 文件，按照文件说明，进行相应修改
[crsusr@rwsaa192 bin]$ cp $ORACLE_HOME/assistants/dbca/dbca.rsp orcl_dbca.rsp
[crsusr@rwsaa192 bin]$ vi $ORACLE_HOME/assistants/dbca/orcl_dbca.rsp
responseFileVersion=/oracle/assistants/rspfmt_dbca_response_schema_v20.0.0
gdbName=orcl
databaseConfigType=SI
RACOneNodeServiceName=
policyManaged=FALSE
createServerPool=
cardinality=
force=
pqPoolName=
pqCardinality=
createAsContainerDatabase=false
numberOfPDBs=
pdbName=
useLocalUndoForPDBs=false
pdbAdminPassword=
nodelist=
templateName=$ORACLE_HOME/assistants/dbca/templates/General_Purpose.dbc
oracleHomeUserPassword=
emConfiguration=
emExpressPort=5500
runCVUChecks=
dbsnmpPassword=
omsHost=
omsPort=
emUser=
emPassword=
dvConfiguration=
dvUserName=
dvUserPassword=
dvAccountManagerName=
dvAccountManagerPassword=
olsConfiguration=
datafileJarLocation=
datafileDestination=
recoveryAreaDestination=
diskGroupName=
asmsnmpPassword=
recoveryGroupName=
characterSet=AL32UTF8
nationalCharacterSet=
registerWithDirService=
dirServiceUserName=
dirServicePassword=
walletPassword=
listeners=
variablesFile=
variables=
initParams=
memoryPercentage=20
databaseType=
automaticMemoryManagement=FALSE
totalMemory=100000
[crsusr@rwsaa192 bin]$
第二步 DBCA静默建库
$ORACLE_HOME/bin/dbca -silent -createDatabase -responseFile $ORACLE_HOME/assistants/dbca/orcl_dbca.rsp
sqlplus / as sysdba
shutdown immediate
startup
lsnrctl start