We can use createDuplicateDB command duplicates a database with DBCA in Oracle 18c.
Syntax and Parameters
Use the dbca -createDuplicateDB command with the following syntax:
dbca -createDuplicateDB -gdbName global_database_name -primaryDBConnectionString easy_connect_string_to_the_primary_database -sid database_system_identifier [-initParams initialization_parameters [-initParamsEscapeChar initialization_parameters_escape_character]] [-policyManaged | -adminManaged] [-policyManaged -serverPoolName server_pool_names [-pqPoolName pq_pool_name] [-createServerPool new_server_pool_name [-pqPoolName new_pq_pool_name] [-force] [-pqCardinality pq_cardinality_of_the_new_server_pool] [-cardinality cardinality_of_the_new_server_pool]]] [-adminManaged] [-datafileDestination data_files_directory] [-databaseConfigType {SINGLE | RAC | RACONENODE} [-RACOneNodeServiceName service_name_for_RAC_One_Node_database]] [-createAsStandby [-dbUniqueName db_unique_name_for_standby_database]] [-customScripts custom_sql_scripts_to_run_after_database_creation] [-useWalletForDBCredentials {true | false} -dbCredentialsWalletPassword wallet_account_password -dbCredentialsWalletLocation wallet_files_directory]
For creating the duplicate database, our primary database must be in archive log, otherwise we will get an error.
[oracle@18c admin]$ dbca -silent -createDuplicateDB -gdbName DUP18C -primaryDBConnectionString 18c.localdomain:1521/CDB18C.localdomain -sid DUP18C Enter SYS user password: [FATAL] [DBT-16051] Archive log mode is not enabled in the primary database. ACTION: Primary database should be configured with archive log mode for creating a duplicate or standby database.
Run the following command to create a duplicate database.
[oracle@18c admin]$ dbca -createDuplicateDB -gdbName DUP18C -primaryDBConnectionString 18c.localdomain:1521/CDB18C.localdomain -sid DUP18C -initParams DB_FILE_NAME_CONVERT='/CDB18C/','/DUP18C/' [oracle@18c admin]$
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