![]() Clearly the stale credentials on the connection object where not an issue on the Process Recalc because there was not need to go the the source to repopulate the cube tables. Obviously the account was used during development and never changed, which explains the ability to perform a Process Full before but not now. Make sure to specify the correct instance name in the Server Properties in the Deployment Server section. I changed the Connection “Impersonation Info” to “Use the service account” and the problem was fixed, for good! I was able to process the database in any mode desired. Instead it requires a much faster Process Recalc In situations where a multidimensional model requires the use of snapshots (i.e. To do this, go to the Solution Explorer, select the AdventureWorks Tabular Model and right click on Properties. Next I checked the impersonation settings on the connection object… Aha here lies the problem, the Connection “Impersonation Info” had been set to a specific AD account and on further investigation it turned out that the credentials (password) were stale. On examining the cube settings I saw that the database “Data Source Impersonation Info” was set to “Default” which is OK. So given that the only major difference between the processing modes was the fact that the Process Full re-loads the data into the model was that it was obviously a security issue related to access to the data source. rebuilds user hierarchies, and rebuilds other internal engine structures. The “Process Recalc” – For all tables in the database, recalculates calculated columns, rebuilds relationships. Any affected calculated columns, relationships, user hierarchies, or internal engine structures (except table dictionaries) are recalculated. The “Process Full” – Loads data into all selected partitions or tables. Processing an entire model If you want to load the data for an entire model: Choose this menu option to process all of the tables in a model. Now choose a connection, and choose to process it: Choose to process all the tables using this connection. The model is massive and pretty sure that's the problem but I've inherited it like that so at the moment cant do anything about that. To do this, first choose a connection: Choose to look at your existing connections. My understanding of the two processing modes in questions are that: 4 Hi i'm working on a large SSAS tabular model and it's so slow every time i change even the smallest thing it goes away and thinks about it for ages. I focused on what the different processing modes actually do. Error returned: An unexpected exception occurred. My first thought was that some security setting had been changed or potentially a Kerberos issue was at play. SSAS Tabular Project - Failed to save modifications to the server. As it turns out the Process Default is actually performing a Process Recalc. What made this particularly strange is that I know I was able to perform a Process Full in the past few days and could currently perform a Process Default on the same database without issue. ![]() You can find more information at the Microsoft Doc “ Sequence command (TMSL)”.I recently received the error “Logon failure: unknown user name or bad password “ when performing a database Process Full on a tabular model. In the TMSL code above, the Process Data commands will be processed in parallel, followed by the Process Recalc.Īccording to Microsoft, “The default behavior is to use as much parallelism as possible.” You can limit the number of threads by assigning a value to maxParallelism in the sequence object. Parallel processing uses more resources, but can result in significantly shorter processing windows. In previous SQL Server versions, all commands were processed sequentially. A major improvement beginning with SQL Server 2016 is parallel processing.
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