SQL 2012 :: No Disks Were Found On Which To Perform Cluster Validation Tests
Sep 9, 2014
I am getting following errors in my Cluster Validation report when trying to create a Windows Cluster.
I have 2 nodes DB01 and DB02 . Each has 1 public ip, 1 private ip (for heartbeat), 2 private ips for SAN1 and SAN2. The private ip's to SAN are directly connected via Network Adaptor in DB01 and DB02.
Validate Microsoft MPIO-based disks
Description: Validate that disks that use Microsoft Multipath I/O (MPIO) have been configured correctly.
Start: 9/9/2014 1:57:52 PM.
No disks were found on which to perform cluster validation tests.
Stop: 9/9/2014 1:57:53 PM.
[Code] ...
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May 12, 2015
OS Windows Server 2012
SQL 2012
I have a software that presents a drive to a 2 node cluster.
Not sure how I would go about presenting this newly presented drive as a Cluster Resource and make SQL depend on this resource.
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Apr 17, 2007
Hello,
I have a two node SQL 2000 cluster running on windows 2003 enterprise server. We need to replace the SAN disks. Can we not disable SQL service & Cluster service, copy the contents from existing disks to target disks, swap the drive letter & start the services?
What is the best practice to do this? Appreciate your help.
Thanks
Rajan
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Jun 29, 2006
Our ETL process involves some pre-load validation, and I'm wondering how best to implement it in SSIS.
Some details on my situation: I need to import 30 flat files with different data formats into 30 destination tables. In addition, these files share a common header and footer row format, and I need to validate these headers and footers before using the imported data downstream. (For example, the footer contains a record count, and fields in the header and footer should match some user variables.) My first approach was to write a Perl script that splits each file into three (header, data, and footer), but while that makes it easy to import the data section, it's more complicated to validate the header and footer and work them into the control flow. I think I'd also have to copy the same logic for all 30 data flows, which is less than ideal.
It looks like implementing this logic directly in SSIS is a little ugly (though that could be my lack of experience speaking). As I thought about this some more, I came up with a couple other solutions -- any critiques or comments?
1) Write a custom source adapter (which will probably contain the default flat file adapter) that knows how to validate my header and footer. I'd be able to read the file formats from an XML file, which might make my scripts more generic, and I might even be able to handle some custom data conversions more elegantly than I'm doing right now. (These files represent null numerics as whitespace rather than an empty field.)
2) Beef up the Perl splitter to validate the header and footer. If the cleanest approach is to say "assume that SSIS is only loading pre-validated data", this makes the problem entirely external.
Or am I entirely missing the mark here? Any thoughts?
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Mar 13, 2014
I am trying to build the 2 node 2 clusters with the AlwaysOn.
Here isthe landscape.
2 nodes PROD failover cluster (running once instance)
2 nodes DR failover cluster (running 2 instances - DR and PRE-PROD)
Both clusters are in different geographies.
PRE-PROD can be editable. So out of scope of Always On.
One instance on PROD -> DR of the other box. [Want to achive thru AlwaysON]
Now my Question:
1) Do i need to have all the 4 nodes in same failover cluster group? If yes, then this would become MultiSubnet cluster Or Is there any way those 2 diffrerent failover clusters (one DR and one PROD) can be part of AlwaysOn.
2) Can i use the clustered disks as in the above landscape for always on?
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Mar 13, 2014
Why I see absolutely no performance improvement when I spread my primary file group over 8 separate files on 8 separate disks, as opposed to having the primary file group all in one file on one disk.
I have set up 2 identical databases, one spread over 8 disks and one on one disk. Each database has a table called DATA and a column called VALUE. Value is NVARCHAR(200). I have filled each table up in both databases with 20,000 rows.
I then perform a select on each table in each database using CHECKPOINT and DBCC DROPCLEANBUFFERS to ensure I am reading from disk before each query and the execution times are identical in both databases.
I then ran the same queries against each database using a load testing tool and the batch requests per second on each DB is identical under load.
Surely the database with data spread over 8 disks should be FAR faster than the single file database as you have the combined reading power of 8 disks as opposed to 2??
Also, the same is happening for write speeds. When I create the data on both databases, the time it takes is identical on both.
BOL says it should be faster with multiple disks.
Just FYI this is on an Azure virtual machine and each disk is a locally redundant data disk that I have attached to the virtual machine.
Whether write speeds should increase with multiple disks or just read speeds?
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Aug 20, 2006
I have a package with an XML Task with OperationType = Validate. The source is a string variable and the second operand is a file connection to a schema file. The schema file <include>'s other schemas. I run the package in debug mode in Visual Studio with no errors. I exit Visual Studio. Then I open Visual Studio again and run the package in debug mode like before and it fails in the xml task with error: "Task failed to validate "No schema to use in validation was found.". I don't understand why it fails since no changes were made. The strange thing is that if I click the File Connection Manager for the schema file and click Browse and then reselect the same schema file again then it runs OK. Note that I have to exit Visual Studio and not just close the package in order to repro the error. It seems like exiting Visual Studio frees some resource that is essential to the validation. Reselecting the schema file in the Connection Manager seems to restore the resource. (SP1)
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2x 10k 600GB
According to the server build requirements for the application, I need 100GB for the OS and 290GB for the drive containing the SQL mdf there are no stated requirements for the ldf, but would like to know if it should be allocated elsewhere?I should do RAID 10 for the 15k drives for SQL and RAID 1 for the OS on the 10k.
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Mar 17, 2014
I am testing out a blank database created over two physical files on two separate disks with one table called data which has one column called values nvarchar(max).
I filled the table up with a whole load of data and ran a select * against it. If I run Permon at the same time I can see that the read load has been spread over multiple disks as each of these disks is getting read from in parallel. If I create the same database on a single file and run the same select * again it takes much longer, proving that the read load has been distributed across multiple disks.
Now moving onto writes, this is where the confusion lies. I understand that SQL server fills files evenly until they need growing, after which it will then fill files individually until they are full in a round robin fashion unless you have trace 1117 turned on. What I don't understand is why the writes aren't distributed out whilst it is filling these file groups.
I ran an continual insert into my table with go 1000000 to monitor how the files are being filled up. I monitored where SQL server was physically placing the files as they were being inserted by running the following query:
;WITH CTE AS
(SELECT
sys.fn_PhysLocFormatter (%%physloc%%) col1,
RIGHT(LEFT(sys.fn_PhysLocFormatter (%%physloc%%),2),1) AS [Physical RID],
DATAID
[Code] ....
I could see that it would a thousand or so records into file 1, then a thousand or so into file 2, then a thousand or so into file 1 etc etc. In another words it would hit one disk, then another disk, then back to disk one to fill the file evenly. Is there any way to make SQL Server distribute the writes out in parallel so that both disks are writing in tandem?
By the looks of it, multiple disks only scale reads, as with writes only one disk is ever written to at once which is annoying. Any way to harness the write power of multiple disks?
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Slq Server 2012.
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I´ve been reading that SQL Server 2012 Always On is dependent on having a Windows Failover Cluster setup. Is that correct ?
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Hi Everyone,
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I open query analyser and on one tab I update a record in a transaction and hold it.
begin tran
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Clear this fails because of the lock placed during the first script and this is fine.
However, is there a way to get the 2nd script to ignore the locked rows and just update as many as it can? The obvious answer seemed to be the READPAST hint like follows…
update customers with (READPAST) set carrier = ''
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The following does work, ignoring the lock and not returning the data
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I’ve tried combining this with the update like so…
update customers
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from customers with (READPAST)
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I’m so desperate I tried moving the update into a cursor and update one row at a time. Nothing worked. I thought I might be able to do something like this
If (Select count(*)
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where customer = 'A00001') > 0
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Select * from customers with (READPAST) where customer = 'A00001'
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I am trying to run an update statement against a vendor's database that houses HR information. If I run a regular select statement against the database with the following query, it returns without error:
SELECT "QUDDAT_DATA"."QUDDAT-INT", "NAME"."INTERNET-ADDRESS", "QUDDAT_DATA"."QUDFLD-FIELD-ID", "QUDDAT_DATA"."QUDTBL-TABLE-ID"
FROM "SKYWARD"."PUB"."NAME" "NAME", "SKYWARD"."PUB"."QUDDAT-DATA" "QUDDAT_DATA"
WHERE ("NAME"."NAME-ID"="QUDDAT_DATA"."QUDDAT-SRC-ID") AND "QUDDAT_DATA"."QUDTBL-TABLE-ID"=0 AND "QUDDAT_DATA"."QUDFLD-FIELD-ID"=16 AND "QUDDAT_DATA"."QUDDAT-INT"=11237When I try to convert it into an
[Code] ....
I am assuming I am receiving this error because it doesn't know where to find QUDDAT-INT? How can I fix that?
The "QUDDAT-INT" column houses the employee number. So in the case of the SELECT query above, I am testing against a specific employee number.
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what is the command to uninstall sql node with skip validation in sql 2012 ?
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I have downloaded the iFilter for Adobe (installed it in a folder with a short name), set the temp variable to the bin folder of the installation.
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We installed the SQL Server 2012 GUI tools, including "Upgrade Advisor," on a new virtual machine. We can connect to the old SQL Server 2008 R2 clustered databases just fine over port 1433 using SQL Server Management Studio 2012, but Upgrade Advisor is a mixed bag. Here are the steps we are taking:
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TITLE: mscorlib
------------------------------
The network path was not found.
------------------------------
BUTTONS:
OK
------------------------------
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I would like to exclude any two rows where Type is equal to 'TypeA' and Key2 is Null that have a corresponding row in the table where Type is equal to 'TypeB' and Key2 is equal to Key1 from another row.
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1 NULL TypeA
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4 NULL TypeA
5 NULL TypeB
6 26 TypeC
7 NULL TypeD
8 NULL TypeD
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Jul 16, 2014
Can't seem to make this SQL query work!
Given one table, Table1, with columns Key1 (int), Key2 (int), and Type (varchar)...
I would like to get the rows where Type is equal to 'TypeA' and Key2 is Null that do NOT have a corresponding row in the table where Type is equal to 'TypeB' and Key2 is equal to Key1 from another row
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**KEY1** **Key2** **Type**
1 NULL TypeA
2 5 TypeA
3 1 TypeB
4 NULL TypeA
5 NULL TypeB
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I have tried this and it doesn't work...
SELECT t1.Key1, t1.Key2, t1.Type
FROM Table1 t1
WHERE t1.Key2 IS NULL
AND t1.Type LIKE 'TypeA'
AND t1.Key1 NOT IN
(SELECT Key1
FROM Table1 t2
WHERE t1.Key1 = t2.Key2
AND t1.Key1 <> t2.Key1
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[code]...
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Hi Everyone -
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we ran the tests in performance analyzer,
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maybe i'm smoking the stuff - but i thought the
useage of the IN causes a full table scan for each
of the items in the in clause
please advise
take care
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