Hi Stefan,
Sorry for the delay. I needed consultation to answer all your questions ). thanks for the answer. I found out that this message was not in the logs 3 > month ago, where we had the same sedna version. > At this time there was no hang when sedna created a checkpoint. > It's not an error. Also It's ok that sometimes there is no this messages in logs. And definitely there is no connection between performance and this message. > Is it normal that no querys can be exececuted for one minute if sedna > creates a checkpoint or may this be related with our performance problems? > Do you have unfinished read-only queries at this moments? What OS do you use, what file systems (and its settings) do you use? It's normal that not read-only queries can not be executed while checkpoint is being created. It's also normal for checkpoint (and new not read-only transactions) to be delayed until there are old unfinished read-only transactions. I will try using more logical logs, so that checkpoint procedure will not > occur that often. > What do you mean "more logical logs"? The only way you can try is to decrease upd_crt value. > One more question: Concurrent Transactions is limited to 10. Will it be > possible to change this parameter in a future relase (sedna 3.6). As far as > I understand it we have a lot of concurrent transactions and a lot of write > transactions. > It's not true. There is no such limit. This parameter is legacy and I hope it will be removed in the future release. Ivan Shcheklein, Sedna Team
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