We are using azure data flows and we are trying to load the data in one particular table in sql server. however our data flow keeps running for hours for smaller set of data.
when we tried to truncate or drop the table, our request times out.
how can we force drop and recreate the table.
What I checked
We don't have any foreign constraints that may avoid the drop
Getting this error when i tried to truncate
Failed to execute query. Error: A severe error occurred on the current command. The results, if any, should be discarded.
I also ran this query and found this
Query -
SELECT session_id
,blocking_session_id
,wait_time
,wait_type
,last_wait_type
,wait_resource
,transaction_isolation_level
,lock_timeout
FROM sys.dm_exec_requests
WHERE blocking_session_id <> 0
Is this causing the issue
How can I fix this issue
i found this after running
exec sp_who 88
What can i do on it
find out more about blocking session 88 , run exec sp_who 88 , seems like this is the session that is blocking , find out more about blocking stuff , if you are allowed to add a proc to the database , go get and install sp_whoisactive which gives you more information
then you can run : dbcc inputnuffer(88) to find out which main proc or process is executing that select query.
if this is safe to kill that process, you can kill that session by
kill 88
before killing that session make sure that session id is still running the same process
Related
I have a large table without any indexes on it, about 27.5m rows.
I tried to delete about half of those using using BEGIN TRAN.
I then tried canceling the querie, but because it was taking long I decided to just close the Management Studio.
Now when I try to look into that table, it does not return anything, just keeps running.
When I run SELECT TOP 10 * FROM Tbl it just executes without returning anything.
But when I run SELECT TOP 10 * FROM Tbl(NOLOCK) it return 10 rows.
This tells me that it is waiting on a Rollback/Commit from my BEGIN TRAN.
I thought it would rollback automatically after closing the session and Management Studio.
How do I fix this issue?
Thanks.
Execute SP: SP_LOCK
In Results you will get SPID, DBID, OBJID, INDID, TYPE, RESOURCE,
MODE, STATUS
Now check the status column, if it is showing wait then
kill that SPID. To kill a particular SPID Execute SP: Kill 65 (Where
65 is SPID)
MSDN Forum
Apparently, this worked:
Terminate/Close connection to the database would solve this. To close connection you can try terminating sqlserver.exe from Task Manager or Activity Monitor if you have a Mac.
I am trying to kill a Sybase process but no success.
sp_who returns, among others the line:
fid,spid,status,loginame,origname,hostname,blk_spid,dbname,tempdbname,cmd,block_xloid,threadpool
' 0',' 14','running','sa','sa','server',' 0','DBSOTEST','tempdb','INSERT',' 0','syb_default_pool'
If I try to kill this process (kill 14) I have the error:
Could not execute statement.
You cannot use KILL to kill your own
process. Sybase error code=6104 Severity Level=16, State=1,
Transaction State=1 Line 1
select syb_quit() exists from my session but the process is not stopped.
Observation:
After a restart of Sybase server the process is there. It is this normal? I do not have any insert command that is running, or any other program that does the insert.
Any insert command in the any table of the DB does not work.
Any select command works.
How can I obtain the permission to insert in the tables of my database?
There seems to be two questions combined: one about killing and one about permissions. Please raise separate questions for there.
As for the killing, your own process will always be there the moment you connect to the ASE server. And as the error message says, you cannot kill yourself.
When there are errors with inserting etc., at least post the error messages. Or talk to your DBA.
I am using SQL Server 2014. I have created the following T-SQL query which I uploaded to my local SQL server to run as a job process on a daily basis at a specific time. However, I noticed that it failed to run. If I run it manually in SSMS, it runs correctly.
What is preventing the query to run as an automated process? Is it a syntax issue?
USE MyDatabase
GO
DELETE FROM ExchangeRate -- STEP 1
;WITH MAINQUERY_CTE AS ( --STEP 2
SELECT *
FROM (
SELECT *
FROM [178.25.0.20].HMS_ARL.dbo.ExchangeRate
) q
)
INSERT INTO ExchangeRate --STEP 3
SELECT *
FROM MAINQUERY_CTE
Basically, the function of the query is to copy a table named ExchangeRate from the live server and paste its content in a table of the same name (which already exists on my local server).
Error Log shows the following message:
Description: Executing the query "USE MyDatabase DELETE FROM
ExchangeRate..." failed with the following error: "Access to the
remote server is denied because no login-mapping exists.". Possible
failure reasons: Problems with the query, "ResultSet" property not set
correctly, parameters not set correctly, or connection not established
correctly. End Error DTExec: The package execution returned
DTSER_FAILURE (1). Started: 10:59:30 AM Finished: 10:59:30 AM
Elapsed: 0.422 seconds. The package execution failed. NOTE: The
step was retried the requested number of times (3) without succeeding.
The step failed.
May be you have to create Linked Server in your local server to the Remote server?
I need to restart a database because some processes are not working. My plan is to take it offline and back online again.
I am trying to do this in Sql Server Management Studio 2008:
use master;
go
alter database qcvalues
set single_user
with rollback immediate;
alter database qcvalues
set multi_user;
go
I am getting these errors:
Msg 5061, Level 16, State 1, Line 1
ALTER DATABASE failed because a lock could not be placed on database 'qcvalues'. Try again later.
Msg 5069, Level 16, State 1, Line 1
ALTER DATABASE statement failed.
Msg 5061, Level 16, State 1, Line 4
ALTER DATABASE failed because a lock could not be placed on database 'qcvalues'. Try again later.
Msg 5069, Level 16, State 1, Line 4
ALTER DATABASE statement failed.
What am I doing wrong?
After you get the error, run
EXEC sp_who2
Look for the database in the list. It's possible that a connection was not terminated. If you find any connections to the database, run
KILL <SPID>
where <SPID> is the SPID for the sessions that are connected to the database.
Try your script after all connections to the database are removed.
Unfortunately, I don't have a reason why you're seeing the problem, but here is a link that shows that the problem has occurred elsewhere.
http://www.geakeit.co.uk/2010/12/11/sql-take-offline-fails-alter-database-failed-because-a-lock-could-not-error-5061/
I managed to reproduce this error by doing the following.
Connection 1 (leave running for a couple of minutes)
CREATE DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING123 SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
Try this if it is "in transition" ...
http://learnmysql.blogspot.com/2012/05/database-is-in-transition-try-statement.html
USE master
GO
ALTER DATABASE <db_name>
SET OFFLINE WITH ROLLBACK IMMEDIATE
...
...
ALTER DATABASE <db_name> SET ONLINE
Just to add my two cents. I've put myself into the same situation, while searching the minimum required privileges of a db login to run successfully the statement:
ALTER DATABASE ... SET SINGLE_USER WITH ROLLBACK IMMEDIATE
It seems that the ALTER statement completes successfully, when executed with a sysadmin login, but it requires the connections cleanup part, when executed under a login which has "only" limited permissions like:
ALTER ANY DATABASE
P.S. I've spent hours trying to figure out why the "ALTER DATABASE.." does not work when executed under a login that has dbcreator role + ALTER ANY DATABASE privileges. Here's my MSDN thread!
I will add this here in case someone will be as lucky as me.
When reviewing the sp_who2 list of processes note the processes that run not only for the effected database but also for master. In my case the issue that was blocking the database was related to a stored procedure that started a xp_cmdshell.
Check if you have any processes in KILL/RollBack state for master database
SELECT *
FROM sys.sysprocesses
WHERE cmd = 'KILLED/ROLLBACK'
If you have the same issue, just the KILL command will probably not help.
You can restarted the SQL server, or better way is to find the cmd.exe under windows processes on SQL server OS and kill it.
In SQL Management Studio, go to Security -> Logins and double click your Login. Choose Server Roles from the left column, and verify that sysadmin is checked.
In my case, I was logged in on an account without that privilege.
HTH!
Killing the process ID worked nicely for me.
When running "EXEC sp_who2" Command over a new query window... and filter the results for the "busy" database , Killing the processes with "KILL " command managed to do the trick. After that all worked again.
I know this is an old post but I recently ran into a very similar problem. Unfortunately I wasn't able to use any of the alter database commands because an exclusive lock couldn't be placed. But I was never able to find an open connection to the db. I eventually had to forcefully delete the health state of the database to force it into a restoring state instead of in recovery.
In rare cases (e.g., after a heavy transaction is commited) a running CHECKPOINT system process holding a FILE lock on the database file prevents transition to MULTI_USER mode.
In my scenario, there was no process blocking the database under sp_who2. However, we discovered because the database is much larger than our other databases that pending processes were still running which is why the database under the availability group still displayed as red/offline after we tried to 'resume data'by right clicking the paused database.
To check if you still have processes running just execute this command:
select percent complete from sys.dm_exec_requests
where percent_complete > 0
When running a stored procedure (from a .NET application) that does an INSERT and an UPDATE, I sometimes (but not that often, really) and randomly get this error:
ERROR [40001] [DataDirect][ODBC Sybase Wire Protocol driver][SQL Server]Your server command (family id #0, process id #46) encountered a deadlock situation. Please re-run your command.
How can I fix this?
Thanks.
Your best bet for solving you deadlocking issue is to set "print deadlock information" to on using
sp_configure "print deadlock information", 1
Everytime there is a deadlock this will print information about what processes were involved and what sql they were running at the time of the dead lock.
If your tables are using allpages locking. It can reduce deadlocks to switch to datarows or datapages locking. If you do this make sure to gather new stats on the tables and recreate indexes, views, stored procedures and triggers that access the tables that are changed. If you don't you will either get errors or not see the full benefits of the change depending on which ones are not recreated.
I have a set of long term apps which occasionally over lap table access and sybase will throw this error. If you check the sybase server log it will give you the complete info on why it happened. Like: The sql that was involved the two processes trying to get a lock. Usually one trying to read and the other doing something like a delete. In my case the apps are running in separate JVMs, so can't sychronize just have to clean up periodically.
Assuming that your tables are properly indexed (and that you are actually using those indexes - always worth checking via the query plan) you could try breaking the component parts of the SP down and wrapping them in separate transactions so that each unit of work is completed before the next one starts.
begin transaction
update mytable1
set mycolumn = "test"
where ID=1
commit transaction
go
begin transaction
insert into mytable2 (mycolumn) select mycolumn from mytable1 where ID = 1
commit transaction
go