Re: Very, very large .dat files

2017-12-05 Thread Peter Hansson
Thank for taking time to answer. Appreciated. You basically confirmed my understanding: I need to go for a DIU approach if I want table partitioning. On 05-Dec-17 17:30, Bryan Pendleton wrote: You are correct, Derby does not provide table partitioning features such as those provided by Oracl

Re: Very, very large .dat files

2017-12-05 Thread Bryan Pendleton
You are correct, Derby does not provide table partitioning features such as those provided by Oracle. And you are correct, a single Derby table is a single .dat file. But modern filesystems handle very large files without problems. Is there a particular reason that you think a very large file wil

Re: Very, very large .dat files

2017-12-05 Thread Peter Hansson
I guess the question is if Apache Derby supports table partitioning (the term used in Oracle RDBMS).  I understand it doesn't. This means that if I have an incredible large Derby table then that will mean an incredible large single .dat file too. (a table is always stored in a single .dat fi

Very, very large .dat files

2017-12-05 Thread Peter Hansson
We've seen .dat files  in seg0 directory grow to several hundreds of gigabytes. While everything works ok such a file becomes unmanageable from an OS point of view. Is there a way to control when Derby starts a new conglomerate?  ... so that there are more .dat files but each of them of less