Re: [h2] Unique index or primary key violation: SYS_ID ON PUBLIC.SYS(ID) [23505-168] (using 1.3.168)

2014-04-10 Thread comtel
Hi, same problem here. After upgrade h2-1.3.174.jar to h2-1.3.176.jar and connect to my exist db file I get to following trace: (without any executed statement, just connect) 04-10 11:50:39 database: ALTER TABLE PUBLIC.REL_USERS_RIGHTS ADD CONSTRAINT PUBLIC.REL_USERS_RIGHTS_FK_ID_USER FOREIGN

Re: [h2] Manage MVStore file growth: Drop old versions? Best parameters? Entry order?

2014-04-10 Thread Markus Kropf
Thank you very much, Thomas, your hint on LSM-trees opened my eyes! (a little smalltalk: sometimes I tend to forget that there are laws of nature in computer science too... naive thought: That doesn't fit into memory, so lets store it in a database, DBs are so smart these days, they will give

Re: [h2] Manage MVStore file growth: Drop old versions? Best parameters? Entry order?

2014-04-10 Thread Noel Grandin
Thomas, perhaps we need a way of adding sorted entries to MVStore that is optimized to reduce writes and reduce internal page node splitting? Kind of like INSERT SORTED. -- You received this message because you are subscribed to the Google Groups H2 Database group. To unsubscribe from

[h2] Manage MVStore file growth: Drop old versions? Best parameters? Entry order?

2014-04-10 Thread Thomas Mueller
Hi, Thomas, perhaps we need a way of adding sorted entries to MVStore that is optimized to reduce writes and reduce internal page node splitting? Well, inserting entries in sorted order shouldn't be all that slow. Is it? What is quite slow is adding entries in random order. I ran into this