Background:
In my Oracle cloud dashboard, I see Database and Database Classic tiles.
Database service has plan of Oracle Cloud Infrastructure Database.
Database Classic service has plan of Database Classic.
Oracle documentation points to same https://cloud.oracle.com/database URL when navigated from both PaaS and IaaS.
My perspective:
OCI Database is a IaaS service - where User has the responsibility of
creating and configuring VM,
creating the Database system and Database connection,
database backup, storage, patching, upgrade etc.
Database Classic is a PaaS service where User has the responsibility of
Creating Database connection.
Oracle takes cares all the background activities like patching, upgrade etc.
Question:
Is my understanding correct on which one is PaaS and which one is
IaaS database service?
Is my understanding correct on the benefits
of using OCI Database and Database Classic?
What is the difference
between Oracle Cloud Infrastructure Database and Oracle Database
Classic?
Regards,
Karthick.R
In Oracle Cloud terminology Classic refers to the generation 1 cloud. OCI refers to the generation 2 cloud, which introduced Bare Metal and off-box virtualization for example. OCI and OCI Classic has different data centers (regions). There are some Classic PaaS services that can be deployed on OCI regions, but those are still managed with the gen1 PSM (PaaS Service Manager Tool), so they also have a different UI compared to OCI services. "Oracle strongly encourages customers to migrate their existing cloud resources from Oracle Cloud Infrastructure Compute Classic regions." - Source: Introduction to Migrating to Oracle Cloud Infrastructure. Oracle already published documentation and eBook for the OCI upgrade.
Answering your specific questions:
Both OCI Database and Database Classic are PaaS services with
different UIs and PaaS mgmt tools, but with the same database
technology behind. Both OCI Database and Database Classic provides a
wizard, as well as command line tools for deploying a database
service without installing a database and without creating &
configuring VMs.
Both will make it easier to backup, patch, upgrade,
etc your database, but won't do it in the background. Autonomous DBs
(ADWH and ATP) can do that for you, which is available on OCI.
The main difference is the management tool/UI provided, as well as OCI
Database can benefit from the advantages of the gen2 cloud a.k.a.
OCI.
Related
I have a couple of questions on AWS RDS service for migrating an oracle 19c server on RHEL with 3 standalone instances and databases:
Can RDS instance support multiple oracle standalone instances/databases or only one instance?
If I have an existing RDS service running in AWS, can I migrate another on-premise oracle database to the RDS database as another oracle schema?
Have not tried it yet.
RDS for Oracle limits one instance to a single database. However you can have multiple schemas in one database.
An account can have up to 40 BYOL type Oracle RDS instances, or up to 10 instances where license is included. You can also increase these limits by contacting AWS support.
See here for more details.
Each RDS instance equals one database. However, you can set up multiple RDS instances, if you want to.
For migrations, please have a look at the Database Migration Service (DMS). Regarding your schema in particular, please check the Schema Conversion Tool which is a part of the DMS.
Sorry I can’t be more specific as the questions are rather vague themselves.
What are the supported clients and client versions for Oracle Autonomous Database?
Any connection type supported by Oracle Net Services can be used to connect to Autonomous Database.
Oracle Call Interface (OCI) connections require installing the Oracle client software. For these connections, Oracle Database Client 11.2.0.4 (or higher) or the Oracle Instant Client 12.1.0.2 (or higher) are supported by Autonomous Database.
For JDBC Thin connections, the only requirement is to have JDK8 (or higher) installed.
You can also connect to Autonomous Database using the Oracle supplied tools such as Oracle SQL Developer (version 18.2 or higher recommended)and Oracle SQLcl.
Some of these clients and tools such as JDBC, SQL Developer, and SQlcl support TLS authentication without using any wallet; hence making life much easier as opposed to mTLS authentication, which requires a wallet. I definitely recommend checking out the TLS option without a wallet in ADB since it has several advantages as described in this blog post.
Another great option is Oracle Database Actions if you don't want to worry about supported versions, installing a client, whether to use a wallet or not. Database Actions is a web-based interface that uses Oracle REST Data Services to provide executing your SQL statements and scripts, creating Data Modeler diagrams, developing RESTful web services, managing JSON collections, and using the Data Load, Catalog, Data Insights, Business Models, and Data Transforms tools to load data from local and remote sources, view data in your tables and views, view objects in your data dictionary, and organize, analyze, and transform your data. You can access Database Actions from the ADB details page of your instance in Oracle Cloud Infrastructure console:
I also recommend referring to the documentation for more details on supported clients, client versions, and connection methods.
Disclaimer: I’m a Product Manager at Oracle.
I'm working on a project to create hybrid SQL database per tenant model. While we were able to replicate the on-premise databases to databases in Azure. I'm not able to find a way to continuously sync both on-prem DB and cloud DB (We cannot use data sync agent or transaction replication). We are looking for any other alternatives that we can try to achieve our purpose.
Also, how does synchronization works when the internet is down and cannot sync with cloud?
Sorry for my ignorance since I'm new to this field.
Thanks.
why can't you use data sync agent? It can be installed in other machine that has access to the database and internet.
The supported databases listed in the UAA documentation seem to be MySQL, PostgresSQL and HSQL.
I noticed this pull request from 2013 which provided Oracle DB support for UAA - https://github.com/cloudfoundry/uaa/pull/39 but am unable to find any documentation related to UAA with Oracle DB
Has anyone used UAA with an Oracle DB ?
We currently do not support Oracle. We picked three open source databases for this open source project to stick with and that way have somewhat manageable CI pipelines.
We would however consider contribution if there was a willingness to maintain it.
the designing.making/deploying/management of a distributed database?
or do i need to buy the versions for the above?
if it 10g express has this support, will there be a central point to which my web application will connect, or do i have to write connection strings to connect to each server making "the distributed database "
please also refer to this post
Oracle distributed databases and MSVC
Oracle Express Edition is limited to a single CPU and 4GB of data on a single server. That's why it's free. If you want to use it in a distributed configuration you will have to write the glue yourself.