Is there a script or a way for me to sync only certain tables from the master DB to all slave site DB's. They are all on the same server, but there are around 200 mysql db's and all of them must be kept in sync with main DB and replicate every hour or so... or alternatively is there a Joomla Component that can do the above with the Virtuemart Tables
If i'm understanding your question, you should check out the multisite component:
http://www.jms2win.com/
Related
I'm doing an application in Laravel that contains several connections to different databases, in which each one reads a service audit table. The application is to visualize logs of different applications.
To improve the reading speed, could be possible download every X minutes all data from different bases to a local base in Redis and read the queries directly from it?
You can do this via scheduled tasks:
https://laravel.com/docs/5.7/scheduling#scheduling-artisan-commands
This will allow you to run an Artisan Command
https://laravel.com/docs/5.7/artisan
In this command you can get the data from your DB and save it to your Redis table
To access mulitple Databases follow the details here:
https://laravel.com/docs/5.7/database#read-and-write-connections
And to setup redis here is the docs
https://laravel.com/docs/5.7/redis
All that you will need to do is track what you have transfered.
Get what you have not transferred and then save that data to the Redis table
The question sums it up basically.
I have an external (not in AWS) MySQL v5.7 database that is 40Gb (it has one table of 16Gb). This database will be imported to RDS MySQL by another team.
I will then need to have a copy of it in my microservice but not the whole DB, just some tables (among them, the 16Gb one).
The optimal solution would be a "read replica" of just some columns of various tables.
It will need to be in constant sync with the "Master" table.
I would also like to use Aurora instead of MySQL (reason: speed & cost).
I googled for information but couldn't find anything helpful besides
AWS Data migration service.
Anyone here has experience with this? And what would you suggest?
Yes you can definetly use DMS service. You can use transformation rule and put db name and table name , which will help in selective migration.
Note :- Binlog_format has to be set true for any kind of source of RDS . They should also have backup enabled.
I've been trying for days but cannot find the answer to this. I am using Oracle Application Express (APEX), someone else setup the initial connection to a "Apex" database in oracle, but I am trying to connect to our production database in oracle. I am making web forms and the web forms are connected to the "Apex" database that was setup already, but I need to connect to our production database so we can create reports from the data entered through the web forms. I need the tables to show up in the create page option from the production database, currently its coming from the apex database, please help.
Create Page View with Tables (from apex)
Thank You so much in Advance!
What is the "production database"? Is it really a different database (than the one you're currently connected to), or is it a user in the same database?
if former:
you could create a database link between those two databases and create synonyms for production users' tables in one of schemas your workspace is assigned to.
another option is to install Apex onto the production database, so that you could use current installation as "development" and then deploy the application into the "production-based" Apex
if latter, you might do the same (i.e. create synonyms, just without the database link), or simply assign the production schema to your workspace
You may be interested to read Mike's response to a question with a similar misunderstanding regarding architecture.
https://community.oracle.com/thread/4135843
Once you have your head wrapped around this, you can consider the parsing schema to your application. This schema defines the table access your application has, in the normal way Oracle handles table privileges.
Then it's up to you to define who has access to what pages, using APEX Authorisation Schemes.
working on an Drupal architecture where I'd like to have a stand alone Drupal/DrupalCommerce installation with product definition based on content coming from an apart Oracle DB.
Does anybody have experience in integration between Drupal and ORacle.
I'm not speaking about replacing MySQL by ORacle but by using ORacle content in specific modules.
What is the best connections options : XML-RPC, REST, WebServices/SOAP ...
Did you try to define the Oracle database as a secondary database in the Drupal settings file?
http://www.php.net/manual/en/book.oci8.php
http://drupal.org/project/oracle
If you manage to connect, you could then write a custom module to switch to the secondary database, retrieve the data from the Oracle database and bring it into the Drupal context.
I would like to find out if you found other solutions.
My delayed job has something to do with exporting slightly edited version of most of the tables in the app's database, and while doing so, it is critical that none of the current data is being edited.
Is it possible to lock the entire database while running this delayed job?
More Information:
The database to be exported is in PostgreSQL, Heroku's postgresql database, to be more specific.
The flow is something like (all below should be done automatically by the code):
site would be put in maintenance mode,
freeze then export the database, then
when exporting is complete, re-activate the site back
Given there is not a lot of information with your question, I am going to answer you as best I can.
1) What is the database type and model? Is it a standalone DB like MS Access or Informix SE?
2) If not a standalone engine, does this database support replication. I used to work a lot with MS SQL Server, and replication had implications while the database was live and being edited. That is the implications were whether edited data was replicated. In this case, consult the docs. Is it an option to use replication to preserve the current database?
3) What kind of task is this? It sounds like maintenance. Our Informix SE databases lock when being imported or exported. On the production server, it is my job to make sure no local server applications are trying to access the locked DB, and that our external payments web site cannot interfere while the db is locked.
4) If this is a production site that is not in maintenance mode, then I suggest you probably do not want to lock an entire database.
I am sorry for not answering your question directly, but more information is needed like are you asking if this can be done from the Ruby DB interface on some model of db.