If you do that even without any of the fancy truncate/partition approaches, you may be able to improve the performance of the system over what you might have now. if you loop over a heap and delete K rows over and over, that can algorithmically perform many scans over the table instead of range scans. Ultimately, you should just focus on making sure that the operation you perform in SQL Azure is efficient. You would need to consider some design changes to your schema to enable this pattern since you aren't just deleting all rows now. For example, if you do a truncate table or swap out a partition from a partitioned table (and then drop it), then you generate much less log than doing row-by-row.
There are some operations which are minimally logged and use less space than doing row-by-row deletes. Those are happening every few minutes today, so the time in which space is required on disk for the log is minimal.
Xlog filling up causes full#
Now, the transaction log only takes space (when using full recovery like SQL Azure does for user databases) until the next backup operation. So, even delete operations use space in the transaction log. Databases make changes using a transaction log so that it can handle failures in the middle of a transaction. Using (var cmd = new SqlCommand(query, tenantId) Īwait Task.Delay(TimeSpan.FromSeconds(5), cancellationToken.Token) Using (var con = new SqlConnection(connection)) Var query = top(10000) from Crumbs where CrumbId <= and TenantId " The database is under heavy write load and is spread on two tablesapces one on a ssd software raid1 partition and a second one on a hdd software raid1 partition. My pgxlog directory is growing uncontrolably untill it fills the partition. While (!cancellationToken.IsCancellationRequested & maxId > 0 & startingTime.AddHours(2) > DateTime.UtcNow) I have a problem on my pg 9.2.4 setup (OpenSuse 12.2, kernel 3.2.13). Long maxId = crumbManager.GetMaxId(fromDate,tenantId) I want to delete a large amount of data from azure SQL table frequently using the below code, but when deleting records then transactions logs will be created which will consume Database data storage ,how could we perform deletion without transactions logs and consuming database data storage ? Task.Run(async () =>
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