Tighter integration will come later.

You should also be carefull with this statement. What does "integration" mean?


1. Integrate SAPDB into MySQL - bad idea
2. Integrate MySQL into SAPDB - bad idea too?

You have to learn from SAPDB! See which features and possibilities it offers, and than let us talk again!

Also consider another point : mysql database concept is just a schema
for sap. With sapdb every database instance is a separate set of
process, with different set of users. For exemple with sapdb you can
tune your memory settings with a database granularity, for example I can
have a test database with 64MB and 1 CPU allocated and a production
database with 1GB allocated and 4CPU allocated. MySQL is a mono instance
database, so every "database" runs in the same address space and that is
a big concern for me. InnoDB is pretty cool, but the mysql architecture
enforces the one machine/one database model. The most disturbing thing
for me with mysql is the 'mysql' database, and storing the users in a
global area instead of a per instance area.

Very cool! I admit that my knowledge of SAP DB is very weak currently and that I am enjoying learning more about the database.

We all might have thought, that you all at MySQL took a look at SAPDB. Than you would have noticed the x-server and that you can have multiple database-kernels installed etc...


Of course I'm far from being a mysql expert so if I can have address
space/process separation between database instances and storage
separation between all the database, feel free to correct me.

If I were faced with a similar need in MySQL, I would run multiple, separate instances of the server on the same machine. This would achieve a similar level of separation - though to be honest, I am not sure that we can bring the isolation down to restricting how many CPUs in a multi-CPU machine each instance uses. I fear that I have not had to do this, and do not personally know. I will ask one of the developers.

Both MySQL instances would have to listen on different TCP ports, or even different IPs just to make that possible.
As i already said, SAPDB is already doing better with the program called x-server: You can connect to one IP/Port combination, and the x-server adresses the right kernel-instance according to the database you choose.


It will be very hard for MySQL to compete against all those features, so _PLEASE_ talk to the SAP guys and get yourself an overview of SAPDB.

MySQL looks like a toy in comparison with SAPDB - MySQL _really_ _is_ much simpler than SAPDB.
You cannot integrate SAPDB into MySQL without loosing all those features that make SAPDB this beautifull.


I have to repeat my self:
- _learn_ from SAPDB
- don't even think of integrating SAPDB into MySQL
- build a new product with all good concepts of both products

I feel like you MySQL-people are assimilating SAPDB. At least the Borg claim to learn things while assimilating other species. I'm not sure if MySQL will.

Please supply us with a plan what will be done!
We need it! Proove, that you are not foolish enough, to create a product that is not as good as the one we already have (i should say "had", because SAPDB is no more - R.I.P)


Thx
  Sven



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