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SSAS Version: 14.0.226.1
Visual Studio Version: 4.7.02558
Issue: once model is delployed to the server, it is processed w/o any errors. But if the SSAS server is rebooted, one of the dimensions throws an error while processing. It just loses one of the column. Here is the error that I get (Failed to save modifications to the server. Error returned: 'The 'Global_Code_SKU' column does not exist in the rowset.):
The column data sample looks like this:
The model contains 2 dimensions and a fact table with 632 million rows in it. May it be that the fact table size is an issue? Maybe dictionary's too big?
How I fix it: by deploying model again without partitions and roles, just metadata, and this fixes the issue, however sometimes servers can be rebooted without notification, so the processing job fails next day (it runs once a day).
Is there any suggestion I can consider to fix this? I searched for a while, haven't found any solution though.
There was a hidden sign in right before the first symbol in one of the names, so after comparing binaries of the two strings we wound that we just should recreate the table and that solved the problem
Some suggestions to try:
After reboot, connect to the SSAS server using SSMS and right click the database in question and choose Script -> Script database as. Is the column Global_Code_SKU still there? Is it hidden? Is it available in the source?
What datatype is the Global_Code_SKU? I've had problems with columns with similar values being auto-identified by SSAS as binary and therefore excluded from the load.
The 2 table not insert or select or delete or drop table command execute then show error below:
The error I'm receiving
Warning: Fatal error 829 occurred at Oct 10 2019 12:48PM. Note the
error and time, and contact your system administrator.
DROP TABLE [dbo].[tbl_SalesMaster_tmp]
GO
Just a quick search on Google and find a similar thread here. However, I extracted the possible solution for an easy reference.
Means there's an I/O subsystem problem. Is something called a 'hard I/O error'. SQL Server asks the OS to read a page and it says no - this means the I/O subsystem couldn't read the page in question.
The CHECKDB output means that it couldn't create the internal database snapshot that it uses to get a transactionally-consistent point-in-time view of the database. There are a number of different causes of this:
There may not be any free space on the volume(s) storing the data files for the database
The SQL service account might not have create-file permissions in the directory containing the data files for the database
If neither of these are the case, you can create your own database snapshot and run DBCC CHECKDB on that. One you have, run the following:
DBCC CHECKDB (yourdbname) WITH NO_INFOMSGS, ALL_ERRORMSGS
Whatever the results are, you're looking at either restoring from a backup, extracting data to a new database, or running repair. Each involves varying amounts of downtime and data-loss. You're also going to have to do some root-cause analysis to figure out what happened to cause the corruption in the first place.
By the way - do you have page checksums enabled? Have you looked in the SQL error log or Windows application event log for any signs of corruption or things going wrong with the I/O subsystem?
I created a Vora table in Vora 1.3 and tried to append data to that table from ORC files that I got from SAP BW archiving process (NLS on Hadoop). I had 20 files, in total containing approx 50 Mio records.
When I tried to use the "files" setting in the APPEND statement as "/path/*", after approx 1 hour Vora returned this error message:
com.sap.spark.vora.client.VoraClientException: Could not load table F002_5F: [Vora [eba156.extendtec.com.au:42681.1640438]] java.lang.RuntimeException: Wrong magic number in response, expected: 0x56320170, actual: 0x00000000. An unsuccessful attempt to load a table might lead to an inconsistent table state. Please drop the table and re-create it if necessary. with error code 0, status ERROR_STATUS
Next thing I tried was appending data from each file using separate APPEND statements. On the 15th append (of 20) I've got the same error message.
The error indicates that the Vora engine on node eba156.extendtec.com.au is not available. I suspect it either crashed or ran into an out-of-memory situtation.
You can check the log directory for a crash dump. If you find one, please open a customer message for further investigation.
If you do not find a crash dump, it is likely a out-of-memory situation. You should find confirmation in either the engine log file or in /var/log/messages (if the oom killer ended the process). In that case, the available memory is not sufficient to load the data.
The Issue
I've been running a particularly large query, generating millions of records to be inserted into a table. Each time I run the query I get an error reporting that the transaction log file is full.
I've managed to get a test query to run with a reduced set of results and by using SELECT INTO instead of INSERT into as pre built table. This reduced set of results generated a 20 gb table, 838,978,560 rows.
When trying to INSERT into the pre built table I've also tried using it with and without a Cluster index. Both failed.
Server Settings
The server is running SQL Server 2005 (Full not Express).
The dbase being used is set to SIMPLE for recovery and there is space available (around 100 gb) on the drive that the file is sitting on.
The transaction log file setting is for File Growth of 250 mb and to a maximum of 2,097,152 mb.
The log file appears to grow as expected till it gets to 4729 mb.
When the issue first appeared the file grow to a lower value however i've reduced the size of other log files on the same server and this appears to allow this transaction log file grow further by the same amount as the reduction on the other files.
I've now run out of ideas of how to solve this. If anyone has any suggestion or insight into what to do it would be much appreciated.
First, you want to avoid auto-growth whenever possible; auto-growth events are HUGE performance killers. If you have 100GB available why not change the log file size to something like 20GB (just temporarily while you troubleshoot this). My policy has always been to use 90%+ of the disk space allocated for a specific MDF/NDF/LDF file. There's no reason not to.
If you are using SIMPLE recovery SQL Server is supposed manage the task of returning unused space but sometimes SQL Server does not do a great job. Before running your query check the available free log space. You can do this by:
right-click the DB > go to Tasks > Shrink > Files.
change the type to "Log"
This will help you understand how much unused space you have. You can set "Reorganize pages before releasing unused space > Shrink File" to 0. Moving forward you can also release unused space using CHECKPOINT; this may be something to include as a first step before your query runs.
We have a large table (somewhat large < 15 million rows) that we have been filling up with stress and stability testing. We are trying to delete the table but it is resisting.
Here's what we have tried:
delete table from the web console. No errors...but it doesn't delete the table.
delete from command line interface. We get an error message: "BigQuery error in rm operation: Backend Error"
We have also tried to delete the whole dataset from the console and that fails as well. No errors reported.
We tried to delete the whole dataset from the commandline. We get the same error message: "BigQuery error in rm operation: Backend Error"
Other tables with the same schema can be deleted without error. Our schema does use 9999 columns (the max) which would be the only odd thing we may be doing.
You've hit a bug with tables that have a large number of updates and a wide schema. We're working on a fix.