Time of Get Script From My Database In SQL Server Management Studio 2008 R2 is about 45:00 Minute.
count of tables : 380
Count of views : 89
Count of SP : 109
look your tempdb, sometimes, the operation is slow, maybe sqlserver divide space for other objects.
This speed will depends on you system's or server's configuration. If you system's configuration is low in that case it will takes much more time. Second this will depends on you database size suppose you are saving images or pdf files in binary mode in database in that case it will takes long time to generate scripts.....
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We have a linked server (OraOLEDB.Oracle) defined in the SQL Server environment. Oracle 12c, SQL Server 2016. There is also an Oracle client (64 bit) installed on SQL Server.
When retrieving data from Oracle (a simple query, getting all columns from a 3M row, fairly narrow table, with varchars, dates and integers), we are seeing the following performance numbers:
sqlplus: select from Oracle > OS File on the SQL Server itself
less than 2k rows/sec
SSMS: insert into a SQL Server table select from Oracle using OpenQuery (passthrough to Oracle, so remote execution)
less than 2k rows/sec
SQL Export/Import tool (in essence, SSIS): insert into a SQL Server table, using the OLEDB Oracle for source and OLEDB SQL Server for target
over 30k rows/second
Looking for ways to improve throughput using OpenQuery/OpenResultSet, to match SSIS throughput. There is probably some buffer/flag somewhere that allows to achieve the same?
Please advise...
Thank you!
--Alex
There is probably some buffer/flag somewhere that allows to achieve the same?
Probably looking for the FetchSize parameter
FetchSize - specifies the number of rows the provider will fetch at a
time (fetch array). It must be set on the basis of data size and the
response time of the network. If the value is set too high, then this
could result in more wait time during the execution of the query. If
the value is set too low, then this could result in many more round
trips to the database. Valid values are 1 to 429,496, and 296. The
default is 100.
eg
exec sp_addlinkedserver N'MyOracle', 'Oracle', 'ORAOLEDB.Oracle', N'//172.16.8.119/xe', N'FetchSize=2000', ''
See, eg https://blogs.msdn.microsoft.com/dbrowne/2013/10/02/creating-a-linked-server-for-oracle-in-64bit-sql-server/
I think there are many way to enhance the performance on the INSERT query, I suggest reading the following article to get more information about data loading performance.
The Data Loading Performance Guide
There are one method you can try which is minimizing the logging by using clustered index. check the link below for more information:
New update on minimal logging for SQL Server 2008
I have a SQL Server 2008 R2 which is 64 bit. Recently I have been observing that there is a huge performance issue in the server. The physical capacity of the server is 28GB. This server is the data warehouse and contains tables having records more than 4 Million.
Whenever a job runs , the memory consumption goes to 98% and the execution rate is extremely slow reaching one record per minute.The job is run through SSIS package.
I want to know what is causing the issue and any help on this
Good day.
Need to get records from an Oracle database to a database in SQL Server. The data source type (ODBC) the performed using a SQL command, where I am taking all possible indices according to my requirement. The process runs fine, the problem is that it takes a long time and I need to be something quick. The process can not be performed with lookup, requires merge or merge join, simply load a table from Oracle to SQL under certain conditions.
Thank you for your help
Check what is your limiting factor. Generally there are 3 points to check:
Remote server is slow.
Source DB can run low on memory, read speed or free CPU. Substitute you query with a straight SELECT statement with no WHERE clause or JOINs and see if your SSIS package runs faster.
Target DB.
You may have indexes enabled, high write latency on HDD or not enough CPU.
Run an INSERT for your target table and see how longer it takes.
Problem may be in the middle: transfer between 2 servers. Network usually is main bottleneck. Is SSIS hosted on the same server as SQL server? then you have 2 network connections + possible hardware bottleneck on dedicated SSIS machine.
Depending on the bottleneck there are different solutions.
If you have network capacity and bottleneck is 1 CPU per query on Oracle, then you can partition your data horisontally (IDs 1 to 100, 101 to 200 etc); establish multiple connections to Oracle and load data in several streams. Number of streams is 1 less then number of CPUs on Oracle, SSIS or SQL Server (which ever is smaller).
I want to set up some monitoring software that will generate an SMNP trap if a database log file goes beyond about 95% usage. It can only look at the first result in the first column of an SQL query, so what I'm looking for is an SQL Query which will just return the percentage figure ONLY in the result - eg, 95
I've found several different ways of doing similar things, but all return table heading etc, whereas I just want the figure. It'll be running this query every hour so nothing too intensive. I'm running SQL version 8.
Thanks, Mike
You could write a query against the OS DMVs to get just the single value you're looking for.
Not sure if this will work for SQL Server 2000, but I know it works as far back as SQL Server 2005. It also requires that performance counters are enabled on the host server (i.e. OS, not just SQL Server).
This query should do the trick:
SELECT cntr_value as PercentUsed
FROM sys.dm_os_performance_counters
WHERE counter_name = 'Percent Log Used'
AND instance_name = 'your_database_name'
I have two servers I'm doing development on and I'm not a DBA, but we don't have one so I'm trying to figure out some performance issues I'm having. Locally I have SQL Server 2008 R2 installed and when an ORM that I'm using runs a query it returns the results in less than a second. When I run that exact same query on our development server with is SQL Server 2005, it takes over a minute. I've looked at the execution plan on both of them the main thing that sticks out is the last two lines of the query has a order by statement. On the 2005 server this is 100% of the cost. on the 2008 server its 0% of the cost. Is there some sort of setting I'm overlooking? Both servers have approximately the same data in them and the same indexes/keys/etc.....since the local copy is just a restore from a backup.
My best guess is the 2005 server is sorting all the tables and then giving me the results (200 lines). Where the 2008 server is getting all the results and then sorting them. (200 results also.)
Link to slow execution plan: http://pastebin.com/sUCiVk8j
Link to fast execution plan: http://pastebin.com/EdR7zFAn
I would post the query but it is obnoxiously long because I have a bunch of includes and its Entity Framework that is generating the query.
Thank you in advance.
Edit: I opened Task manager on the SQL server this is running on and the CPU goes to 100% during the execution of this query.
Edit: Added XML version to jsfiddle.net. pastebin wouldn't allow me to because of the size. Just used the CSS window for the XML.
Actual 2008R2: http://jsfiddle.net/wgsv6/2/
Actual 2005: http://jsfiddle.net/wgsv6/3/
Hard to tell without seeing the query, but is it possible you are missing an INDEX on the slow server?
THe statistics could be out of date on the dev server.