createDuplicateDB with DBCA in Oracle 18c

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:

For creating the duplicate database, our primary database must be in archive log, otherwise we will get an error.

Run the following command to create a duplicate database.

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executePrereqs with DBCA in Oracle 18c

The executePrereqs command executes the prerequisites checks and reports the results. This command can be used to check the environment before running dbca to create a database. Syntax and Parameters Use the dbca –executePrereqs command with the following syntax:

Run the DBCA with executePrereqs

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Shadow Tablespaces in Oracle 18c

A shadow tablespace is a bigfile tablespace intended for shadow lost write protection. Purpose of Shadow Tablespaces Shadow lost write protection provides fast detection and immediate response to a lost write. A data block lost write occurs when an I/O subsystem acknowledges the completion of the block write even though the writers did not occur or when a former […]

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Image-Based Oracle Database Installation in Oracle 18c

Starting with Oracle Database 18c, installation and configuration of Oracle Database software are simplified with the image-based installation. To install Oracle Database, create the new Oracle home directory, extract the image file into the newly-created Oracle home, and run the setup wizard to register the Oracle Database product. Using image-based installation, you can install and […]

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Cancel Session in Oracle 18c

As of Oracle 18c , you can not only abort a database session, but also just a single SQL command. This tip shows how it works. There are situations where the execution of SQL commands takes too long and there is a desire to cancel them. Be it because the SQL command is incorrect, or […]

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Oracle Data Pump Changes in Oracle Database 18c

Oracle Data Pump, Export, and Import The Data Pump Import DATA_OPTIONS parameter has a new CONTINUE_LOAD_ON_FORMAT_ERROR option. If Data Pump encounters a stream format error when loading table data, Data Pump attempts to skip forward to find the start of the next row and continue loading that data from that location. For security purposes, Data […]

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Installing Oracle Database Using RPM Packages in Oracle 18c

Starting with Oracle Database 18c, you can use the Oracle Preinstallation RPM and the rpm -ivh command to perform an RPM-based single-instance Oracle Database or Oracle Database Client installation. Note: An RPM-based Oracle Database installation is supported only on Oracle Linux systems. Use RPM packages to perform a single-instance, Oracle Database installation on Oracle Linux […]

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Oracle Database 18c Technical Architecture

This interactive diagram shows the Oracle Database 18c technical architecture. An Oracle Database consists of at least one database instance and one database. The database instance handles memory and processes. The database consists of physical files called data files, and can be a non-container database or a multitenant container database. An Oracle Database also uses […]

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Installing Oracle 18c Data Guard on Cloud

This article shows how to create Oracle 18c Data Guard in Oracle Database Cloud Service database deployment with simple steps. Create a New Instance of Oracle Data Guard Cloud Service Log in to your Oracle Cloud services account, go to the Oracle Database Cloud Service page, and create a new service:- For Instance Name enter DG18. – […]

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Converting Normal Disk Groups to Flex Disk Groups in Oracle 18c

In this post, You can convert a conventional disk group ie created before Oracle ASM 18c to an Oracle ASM flex disk group without using the restrictive mount (MOUNTED RESTRICTED) option. Migrating (converting) to a flex disk group can be performed for a NORMAL or HIGH redundancy disk group with the CONVERT REDUNDANCY TO FLEX […]

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