petr mitrichev

Petr Mitrichev Contest 10 - this Saturday!

I will be hosting Petr Mitrichev Contest 10 this Saturday (the day after tomorrow) between 15:30 and 20:30 Moscow time (other timezones: http://timeanddate.com/worldclock/fixedtime.html?msg=Petr+Mitrichev+Contest+10&iso=20121027T1530&p1=166&ah=5). The contest will be held at http://codeforces.com/gyms. In order to take part, you need to have an account on codeforces.com. Both teams and individual participants can join....

skylandtech.net skylandtech.net

Data Recovery in HANA, TimesTen, and SQLFire

There is a persistent myth, like a persistent cough, that claims that in-memory databases lose data when a hardware failure takes down a node because memory is volatile and non-persistent. This myth is marketing, not architecture. Most RDBMS products: including Oracle, TimesTen, and HANA; have three layers where data exists: in-memory (think SGA for Oracle), in the log, and on disk. The normal process goes like this: A write...