Migrating Oracle Goldengate to Shareplex Steps

 Migrating from Oracle GoldenGate to SharePlex may involve several steps and considerations. Here are some general steps to transform Oracle GoldenGate to SharePlex:

Evaluate SharePlex: Before migrating, evaluate SharePlex to ensure that it meets your data replication needs. Review its features, capabilities, and compatibility with your database systems. This will help ensure that the transition is smooth and that you can achieve your data replication goals with SharePlex.

Prepare for Migration: Determine the scope and scale of the migration, including which database systems and applications need to be migrated. Identify any dependencies, such as third-party software or customizations, that may need to be addressed before the migration.

Set up SharePlex: Set up and configure SharePlex to replicate data from your source database system(s) to your target system(s). This may involve creating new replication configurations or modifying existing ones.

Test Data Replication: Test the data replication process to ensure that data is being replicated accurately and consistently. Conduct thorough testing to identify and address any issues or discrepancies that may arise.

Migrate Data Replication: Once you have tested the data replication process and addressed any

Steps to migrate an Oracle database to PostgreSQL using a backup and restore process:

Take a backup of the Oracle database: Use the Oracle Export utility to take a backup of the Oracle database. One can use the following command to export the database to a single backup file:

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expdp <username>/<password>@<database_name> directory=<backup_directory> dumpfile=<backup_file_name>.dmp

This will generate a single backup file in Oracle Data Pump format.

Install and configure the Ora2Pg tool: Ora2Pg is a tool that can be used to convert the Oracle backup file into PostgreSQL format. Install and configure the Ora2Pg tool on Oner system.

Convert the Oracle backup to PostgreSQL format: Use the Ora2Pg tool to convert the Oracle backup file to PostgreSQL format. One can use the following command to convert the backup file:

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ora2pg -c config_file -t TABLE -b <backup_file_name>.dmp -o <output_file_name>.sql

This will generate a SQL file with PostgreSQL syntax.

Create a new PostgreSQL database: Create a new PostgreSQL database to import the converted data. One can use the following command to create a new database:

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createdb -U <username> -h <hostname> <database_name>

Import the converted data into PostgreSQL: Import the converted data into the new PostgreSQL database. One can use the following command to import the data:

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psql -U <username> -h <hostname> -d <database_name> -f <output_file_name>.sql

Test the PostgreSQL database: Once the data is imported, test the PostgreSQL database to ensure that it is working as expected.

Please note that the above steps are general and may vary depending on the complexity of Ones database schema and data. Additionally, One may need to modify the configuration file used by Ora2Pg to suit Oner requirements.

Regenerate response

Steps for migrating from Oracle to PostgreSQL using a single backup format:

Install and configure the Ora2Pg tool: Ora2Pg is a tool that can be used to convert Oracle database schema and data into PostgreSQL. Install and configure the Ora2Pg tool on your system.

Convert the Oracle database schema to PostgreSQL: Use the Ora2Pg tool to convert the Oracle database schema to PostgreSQL. You can use the following command to generate the schema.sql file:

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ora2pg -c config_file -t SHOW -o schema.sql

This will generate the schema file with the PostgreSQL syntax.

Create a new PostgreSQL database: Create a new PostgreSQL database to import the converted schema and data. You can use the following command to create a new database:

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createdb -U <username> -h <hostname> <database_name>

Import the converted schema into PostgreSQL: Import the converted schema into the new PostgreSQL database. You can use the following command to import the schema:

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psql -U <username> -h <hostname> -d <database_name> -f schema.sql

Convert the Oracle data to PostgreSQL format: Use the Ora2Pg tool to convert the Oracle data into PostgreSQL format. You can use the following command to generate the data.sql file:

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ora2pg -c config_file -t COPY -o data.sql

Import the converted data into PostgreSQL: Import the converted data into the new PostgreSQL database. You can use the following command to import the data:

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psql -U <username> -h <hostname> -d <database_name> -f data.sql

Test the PostgreSQL database: Once the data is imported, test the PostgreSQL database to ensure that it is working as expected.

Please note that the above steps are general and may vary depending on the complexity of your database schema and data. Additionally, you may need to modify the configuration file used by Ora2Pg to suit your requirements.

Steps to migrate an Oracle database to Cassandra:

Install and configure the Cassandra Bulk Loader tool: The Cassandra Bulk Loader is a tool that can be used to import data from external sources, including Oracle databases, into Cassandra. Install and configure the Cassandra Bulk Loader tool on Oner system.

Export the Oracle data to CSV format: Use the Oracle Export utility to export the data from the Oracle database to CSV format. One can use the following command to export the data:

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exp <username>/<password>@<database_name> file=<export_file_name>.csv

This will generate a CSV file containing the Oracle data.

Convert the Oracle data to Cassandra format: Use the Cassandra Bulk Loader tool to convert the Oracle data in CSV format to Cassandra format. One can use the following command to convert the data:

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sstableloader -d <cassandra_host> -u <username> -pw <password> <export_file_name>.csv

This will convert the data and import it into Cassandra.

Verify the Cassandra data: Once the data is imported, verify the Cassandra data to ensure that it is working as expected.

Please note that the above steps are general and may vary depending on the complexity of Oner Oracle database schema and data. Additionally, One may need to modify the configuration file used by the Cassandra Bulk Loader tool to suit Oner requirements.

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here are some modifications that One may need to make to the Cassandra Bulk Loader configuration file to import data from Oracle:

Change the delimiter: By default, the Cassandra Bulk Loader assumes that the input file uses comma as the delimiter. However, Oracle exports data in CSV format using a semi-colon (;) as the delimiter. To change the delimiter in the configuration file, One can add the following line:

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delimiter=;

Change the input file format: By default, the Cassandra Bulk Loader expects the input file to be in a certain format (SSTable format) that is specific to Cassandra. However, since the input file in this case is in CSV format, One need to specify the input file format as CSV. To do this, One can add the following line:

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input_file_format=CSV

Specify the column names: By default, the Cassandra Bulk Loader assumes that the first row of the input file contains the column names. However, Oracle exports data in CSV format without column names. To specify the column names in the configuration file, One can add the following line:

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input_header=false

This tells the Bulk Loader to skip the first row and use the column names specified in the configuration file.

Specify the mapping between Oracle and Cassandra column names: Since the column names in Oracle may be different from those in Cassandra, One need to specify a mapping between the two sets of column names. To do this, One can add a section to the configuration file that specifies the mapping. For example:

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column_name_mappings={

  "oracle_column_1":"cassandra_column_1",

  "oracle_column_2":"cassandra_column_2",

  "oracle_column_3":"cassandra_column_3",

  ...

}

This maps each Oracle column name to its corresponding Cassandra column name.

Specify the target keyspace and table: Finally, One need to specify the target keyspace and table in the configuration file. For example:

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cassandra.output.keyspace=mykeyspace

cassandra.output.table=mytable

Please note that the above modifications are general and may need to be customized based on the specifics of Oner Oracle database and Cassandra keyspace.

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here's an example Cassandra Bulk Loader configuration file that One can use to import data from Oracle:

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input_file=/path/to/oracle_export_file.csv

input_file_format=CSV

input_header=false

delimiter=;

cassandra.output.keyspace=mykeyspace

cassandra.output.table=mytable

column_name_mappings={

  "oracle_column_1":"cassandra_column_1",

  "oracle_column_2":"cassandra_column_2",

  "oracle_column_3":"cassandra_column_3",

  ...

}

errors_file=/path/to/errors.log

In this example configuration file:

input_file specifies the path to the Oracle export file in CSV format.

input_file_format specifies that the input file is in CSV format.

input_header is set to false to indicate that the first row of the input file does not contain column names.

delimiter is set to ; to specify that the input file uses semi-colon as the delimiter.

cassandra.output.keyspace and cassandra.output.table specify the target keyspace and table in Cassandra where the data will be imported.

column_name_mappings maps each Oracle column name to its corresponding Cassandra column name. One should replace the example column names with the actual column names in Oner Oracle database and Cassandra keyspace.

errors_file specifies the path to a file where any errors encountered during the import process will be logged.

One can save this configuration file to a file, for example /path/to/bulkloader.conf, and then use the following command to run the Cassandra Bulk Loader tool:

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sstableloader -d <cassandra_host> -u <username> -pw <password> -c /path/to/bulkloader.conf

This will import the data from the Oracle export file into Cassandra.

Replication Tools Comparison: Oracle GoldenGate Hevo Data Talend Data Integration SharePlex InfoSphere Arcion BryteFlow

 

Here's an updated comparison of Oracle, Postgres, Cassandra, and Microsoft SQL Server that includes additional dimensions:

 

Prerequisites from Exadata to x86 transformation

 From an Oracle certification and support point of view, moving an Oracle database from a physical server to a VMWare virtual machine can also present some risks:

Certification: Oracle has a certification program for hardware and virtualization platforms, which means that Oracle will only provide support for an Oracle database running on a platform that is certified by Oracle. Moving the database to a VMWare virtual machine that is not certified by Oracle can invalidate ones support agreement and potentially cause issues with future upgrades or patches.

Support: Oracle provides support for its products based on the configuration of the hardware and software environment. If one move an Oracle database from a physical server to a virtual machine, one may need to reconfigure the database and the operating system to be compatible with the virtual environment. Any issues that arise due to the virtual environment may not be covered by ones support agreement.

Compatibility: Some Oracle features and options may not be compatible with virtual environments, or may require additional configuration steps to work correctly. If one are using any of these features, one may need to test them in the virtual environment to ensure they work correctly.

To mitigate these risks, it is important to consult with Oracle support and review the Oracle certification program to ensure that the virtual environment one plan to use is compatible with ones Oracle database. One should also perform thorough testing of ones database in the virtual environment before migrating ones production database to ensure that everything works as expected.

~~~~~~~~~~~~~~~~~~Risks ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Moving an Oracle database from an Exadata machine to an x86-based server can present some risks and challenges. Some of these include:

Performance issues: Exadata is a specialized platform that is optimized for running Oracle databases. It includes hardware and software optimizations that can improve database performance, such as smart storage and network offloading. Moving to an x86-based server may result in decreased performance, especially for workloads that are I/O-intensive.

Compatibility issues: Exadata uses a specialized version of Oracle Linux that is optimized for the platform. Moving to an x86-based server may require changes to the operating system, hardware, and software configurations to ensure compatibility with the Oracle database.

Licensing issues: Oracle licensing can be complex, and moving from an Exadata machine to an x86-based server may have licensing implications. One may need to purchase additional licenses or change ones licensing model to ensure compliance.

Security concerns: Exadata includes hardware and software security features, such as database encryption and secure boot. Moving to an x86-based server may require additional security measures to ensure that the database is protected.

Migration challenges: Moving an Oracle database from an Exadata machine to an x86-based server can be a complex process that requires careful planning and testing. Any issues that arise during the migration process could result in downtime or data loss.

To mitigate these risks, it is important to carefully plan and test the migration of the Oracle database from Exadata to an x86-based server. One should also consult with Oracle support and review ones licensing agreements to ensure that one are in compliance with Oracle's licensing policies. It may also be beneficial to work with a vendor or consultant who specializes in Oracle database migrations to ensure that the migration is performed correctly and with minimal disruption to ones business operations.

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Here are some compatibility issues that one may encounter when moving an Oracle database from an Exadata machine to a non-Oracle x86-based server, along with some pre-requisites to address them:

Operating system: Exadata uses a specialized version of Oracle Linux that is optimized for the platform. Moving to a non-Oracle x86-based server may require changes to the operating system to ensure compatibility with the Oracle database. To address this, one can:

Install Oracle Linux on the non-Oracle x86-based server to ensure compatibility with the Oracle database.

Install a version of Linux that is certified by Oracle as compatible with the Oracle database. Check the Oracle certification matrix for the specific version of the database one are using.

Hardware: Exadata includes specialized hardware components, such as InfiniBand networking and flash storage, that are optimized for running Oracle databases. Moving to a non-Oracle x86-based server may require changes to the hardware configuration to ensure compatibility with the Oracle database. To address this, one can:

Check the Oracle certification matrix for the specific hardware components that are certified to work with the Oracle database.

Ensure that the hardware meets the minimum requirements for running the Oracle database, such as CPU, RAM, and storage capacity.

Consider adding hardware components, such as additional disk drives or memory, to improve database performance on the non-Oracle x86-based server.

Oracle Database version: Exadata may be running a different version of the Oracle database than the non-Oracle x86-based server. Moving the database may require upgrading or downgrading the database version to ensure compatibility. To address this, one can:

Check the Oracle certification matrix for the specific database versions that are compatible with the non-Oracle x86-based server.

Plan for any necessary upgrades or downgrades of the database software.

Consider using Oracle's Database Migration Assistant for Unicode (DMU) tool to ensure compatibility between different database versions.

Oracle Database features: Exadata may be using database features that are not available on the non-Oracle x86-based server. Moving the database may require changes to the database configuration to ensure compatibility. To address this, one can:

Review the Oracle documentation to determine which features are available on the non-Oracle x86-based server.

Plan for any necessary changes to the database configuration, such as disabling or reconfiguring features that are not available on the non-Oracle x86-based server.

Third-party software: Exadata may be running third-party software that is not available on the non-Oracle x86-based server. Moving the database may require changes to the software configuration to ensure compatibility. To address this, one can:

Review the third-party software documentation to determine which versions are compatible with the non-Oracle x86-based server.

Plan for any necessary upgrades or changes to the third-party software configuration.

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Pre-requisites:

When considering hardware options for running an Oracle database on a non-Oracle x86-based server, there are several factors to consider, including performance, scalability, reliability, and cost. Here are some hardware options one can consider:

Server hardware: One can choose from a wide variety of x86-based servers from different vendors, including Dell, HP, Lenovo, and Supermicro. When choosing a server, consider the CPU, RAM, storage, and network bandwidth, as well as the server's reliability and support options.

Storage: Oracle databases require fast and reliable storage to perform well. One can choose from different types of storage, including direct-attached storage (DAS), network-attached storage (NAS), and storage area network (SAN). When choosing storage, consider the capacity, speed, and reliability of the storage system.

Network: Oracle databases require high-speed network connections to ensure optimal performance. One can choose from different network options, including Ethernet, InfiniBand, and Fibre Channel. When choosing a network, consider the bandwidth, latency, and reliability of the network connection.

Operating system: The operating system one choose should be certified by Oracle to ensure compatibility with the Oracle database. One can choose from different operating systems, including Oracle Linux, Red Hat Enterprise Linux, and SUSE Linux Enterprise Server.

Virtualization: One can choose to run the Oracle database on a virtualized environment to improve scalability and flexibility. One can use virtualization technologies such as VMware, Microsoft Hyper-V, or Oracle VM.

Backup and Recovery: One can choose from different backup and recovery solutions for ones Oracle database, including Oracle Recovery Manager (RMAN), third-party backup solutions, or cloud-based backup solutions.

Ultimately, the hardware options one choose will depend on ones specific requirements, such as performance, scalability, reliability, and cost. One should carefully evaluate ones options and choose hardware that is compatible with the Oracle database and meets ones business needs.

Migrate Exadata X3 to Exadata X8 using Standby

Here are some pre-configuration high-level steps that one should consider before installing an Exadata X8 system:

Verify that the hardware and software meet the minimum requirements for Exadata X8. One can find the hardware and software requirements in the Oracle Exadata Database Machine Installation Guide: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-guide/

Review the Exadata X8 installation documentation and familiarize yourself with the installation process. One can find the installation documentation here: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-guide/

Plan the network configuration for the Exadata X8 system. This includes configuring the Ethernet and InfiniBand networks, assigning IP addresses and hostnames, and setting up DNS and NTP servers. One can find detailed information on network configuration in the Oracle Exadata Database Machine Installation and Configuration Guide: Network Configuration: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-configuration-guide/network-configuration.html

Prepare the existing Oracle databases for migration to Exadata X8. This includes identifying any database features or configurations that may need to be modified, such as database parameters or storage settings. One can find information on migrating databases to Exadata in the Oracle Exadata Database Machine Migration Guide: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-migration-guide/

Ensure that one have the necessary administrative privileges to install and configure the Exadata X8 system. This includes the ability to install software, configure hardware, and create and manage database users and roles.

If one plan to use Oracle Cloud Infrastructure (OCI) with Exadata X8, one should also review the OCI documentation and familiarize yourself with the OCI console and API. One can find the OCI documentation here: https://docs.oracle.com/en-us/iaas/Content/home.htm

These are just a few of the pre-configuration steps that one should consider before installing an Exadata X8 system. I would recommend consulting the Oracle documentation for a more comprehensive list of pre-installation tasks.

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Install and configure the Exadata X8 hardware components, including the database nodes, storage cells, InfiniBand switches, and PDUs.

Oracle Exadata Database Machine Installation Guide: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-guide/

Configure the network settings, including IP addresses, subnet masks, and hostnames for the database nodes and storage cells.

Oracle Exadata Database Machine Installation and Configuration Guide: Network Configuration: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-configuration-guide/network-configuration.html

Install and configure the Oracle Linux operating system on the database nodes and storage cells.

Oracle Exadata Database Machine Installation and Configuration Guide: Operating System Installation: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-configuration-guide/operating-system-installation.html

Install the Oracle Database software on the database nodes and configure the Oracle Grid Infrastructure.

Oracle Grid Infrastructure Installation Guide: https://docs.oracle.com/en/database/oracle/oracle-database/19/cwlin/oracle-grid-infrastructure-installation-guide-for-linux.html

Configure the Exadata Storage Software on the storage cells, including setting up the Exadata Storage Server Software.

Oracle Exadata Database Machine Installation and Configuration Guide: Storage Configuration: https://docs.oracle.com/en/engineered-systems/exadata-database-machine/exadata-database-machine-installation-configuration-guide/storage-configuration.html

Please note that the above steps are high-level and there may be additional configuration steps or considerations specific to the environment. I would recommend consulting with an Oracle certified professional for assistance with setting up an Exadata X8 system.

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The commands to create a standby database on Exadata X8 while the primary database is on Exadata X3:

On the primary database on Exadata X3, create a standby control file:

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SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS '<file path>';

Replace <file path> with the full path and file name for the standby control file.

Copy the standby control file to the Exadata X8 system:

Use a file transfer utility, such as scp or sftp, to copy the standby control file from the Exadata X3 system to the Exadata X8 system.

On the Exadata X8 system, create a standby database using the standby control file:

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SQL> CREATE CONTROLFILE REUSE SET DATABASE <database name> RESETLOGS ARCHIVELOG;

SQL> STARTUP NOMOUNT;

SQL> ALTER DATABASE SET STANDBY DATABASE TO '<primary database TNS alias>'';

SQL> ALTER DATABASE MOUNT STANDBY DATABASE;

Replace <database name> with the name of the standby database, and <primary database TNS alias> with the TNS alias for the primary database on the Exadata X3 system.

Configure the standby database to receive redo data from the primary database:

Configure the necessary Oracle Data Guard parameters, such as the LOG_ARCHIVE_DEST_2 parameter, to allow the standby database to receive redo data from the primary database.

Start the managed recovery process:

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SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;

This will start the managed recovery process, which will apply redo data from the primary database to the standby database.

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To convert the database on Exadata X3 as the primary and create a standby database on Exadata X8, perform the following steps:

Convert the database on Exadata X3 to a primary database: On the Exadata X3 system, log in to the database as a privileged user and issue the following command to convert the database to a primary database:

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SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY;

This will prepare the database for a switchover to a primary role.

Create a standby database on Exadata X8: On the Exadata X8 system, create a new standby database using Oracle Data Guard. This can be done by following the same steps as for creating a standby database on Exadata X3.

Configure the standby database on Exadata X8: Once the standby database is created, configure it to receive redo data from the primary database on Exadata X3. This involves setting up a network connection between the two systems and configuring the necessary Oracle Data Guard parameters.

Start the standby database: Once the standby database is configured, start it up and make sure that it is synchronized with the primary database on Exadata X3.

Switchover to the new primary database: On the Exadata X3 system, issue the following command to perform a switchover to the new primary database on Exadata X8:

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SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO STANDBY;

This will switch the roles of the two databases, making the standby database on Exadata X8 the new primary database.

Verify the switchover: Once the switchover is complete, verify that the new primary database is functioning correctly and that all data is being replicated properly to the standby database on Exadata X8.

Delete the old primary database: Once the switchover is complete and verified, the old primary database on Exadata X3 can be deleted or repurposed as needed.

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CPU, Memory and Storage Ratio for Exadata X3 to Exadata X8 Calculations

 1> Here's a comparison of the hardware specifications of Exadata X3 and X8:

Hardware Component Exadata X3 Exadata X8

CPU Intel Xeon E5-2690 2.9 GHz 8-core Intel Xeon Gold 6230 2.1 GHz 20-core

Memory 512 GB DDR3 1.5 TB DDR4

Storage 22 TB Raw Flash Storage + 168 TB Raw Disk Storage 44 TB Raw Flash Storage + 720 TB Raw Disk Storage

As one can see, the CPU in Exadata X8 has more cores than Exadata X3, which allows it to process more workloads in parallel. The memory capacity is also higher in Exadata X8, which enables it to store and access more data at a faster rate. The storage capacity of Exadata X8 is significantly higher than Exadata X3, which means it can accommodate larger databases.

To convert Exadata X3 to X8, one would need to consider the ratio of each hardware component to ensure a smooth upgrade. For example, if one want to upgrade the CPU, one would need to calculate the ratio of cores and clock speed between the two models to ensure that the new CPU is compatible with the existing motherboard and other components.

2> To calculate the ratio of cores and clock speed between the two models, we can use the following formula:

(Cores X New Clock Speed) / (Old Cores X Old Clock Speed) = Ratio

For example, let's calculate the ratio for the CPUs of Exadata X3 and X8:

Exadata X3 CPU:

Cores: 8

Clock Speed: 2.9 GHz

Exadata X8 CPU:

Cores: 20

Clock Speed: 2.1 GHz

Ratio calculation:

(20 cores X 2.1 GHz) / (8 cores X 2.9 GHz) = 1.81

Therefore, the ratio of cores and clock speed between the Exadata X3 and X8 CPUs is approximately 1.81. This means that the new CPU in Exadata X8 is about 1.81 times faster than the CPU in Exadata X3, which should provide a significant performance improvement.

However, it's important to note that upgrading the CPU alone may not be sufficient for a successful migration, as other hardware components such as memory and storage may also need to be upgraded to ensure compatibility and optimal performance.

3> Here are the memory and storage specifications for Exadata X3 and X8:

Exadata X3:

Memory: 512 GB DDR3

Storage: 22 TB Raw Flash Storage + 168 TB Raw Disk Storage

Exadata X8:

Memory: 1.5 TB DDR4

Storage: 44 TB Raw Flash Storage + 720 TB Raw Disk Storage

To calculate the ratio of memory and storage between the two models, we can use the following formula:

(New Memory or Storage / Old Memory or Storage) = Ratio

a) Memory Ratio Calculation:

(1.5 TB DDR4) / (512 GB DDR3) = 2.93

Therefore, the ratio of memory between the Exadata X3 and X8 is approximately 2.93. This means that the memory in Exadata X8 is almost three times larger than the memory in Exadata X3.

b) Storage Ratio Calculation:

(44 TB Raw Flash Storage + 720 TB Raw Disk Storage) / (22 TB Raw Flash Storage + 168 TB Raw Disk Storage) = 4.49

Therefore, the ratio of storage between the Exadata X3 and X8 is approximately 4.49. This means that the storage in Exadata X8 is almost 4.5 times larger than the storage in Exadata X3.

It's important to note that when upgrading from Exadata X3 to X8, it's not just about the raw size of the memory and storage, but also the technology used. For example, DDR4 memory is faster and more power-efficient than DDR3, and flash storage is faster than disk storage. Upgrading to Exadata X8 will provide both larger memory and storage capacities, as well as access to faster and more efficient technology.

Source: Based on my experience, I referred the hardware specifications for Exadata X3 and X8 are publicly available on the Oracle website and other sources, and the calculations are basic mathematical formulas that are commonly used to compare hardware specifications. However, any confirmed information will be coming from Oracle Support.