Tuning tips for sql

Can some one tell me the tuning tips for sql statements, please.
Thanks
Ajwat

Yes get EP (explain plan) going and try add /*+ RULE */ hint to your SIUD commands (Select/Insert/Update/Delete) . This changes the optimizer mode from CHOOSE to RULE, I find RULE uses indexes more often than CHOOSE (see example below).
select /*+ RULE */ c1,c2,c3 from t1 where n1=123
--[EP 1 results]
SELECT STATEMENT Optimizer=HINT: RULE
TABLE ACCESS (BY INDEX ROWID) OF T1
INDEX (RANGE SCAN) OF I_NU_T1_N1 (NON-UNIQUE)
select c1,c2,c3 from t1 where n1=123
--[EP 2 results]
SELECT STATEMENT Optimizer=CHOOSE (Cost=1 Card=1 Bytes=12)
TABLE ACCESS (FULL) OF T1 (Cost=1 Card=1 Bytes=12)
Look for any FULL TABLE SCAN entries in your EP results and try to get rid of them. As the above example shows, switching to RULE uses the index on table T1.
There are a while pile of other HINTS listed as well (other than just RULE) which are at ...
http://download-west.oracle.com/otndoc/oracle9i/901_doc/server.901/a87503/hintsref.htm#4894
There is a whole section on Oracle Performance at the following address...
http://download-west.oracle.com/otndoc/oracle9i/901_doc/server.901/a87503/toc.htm
the Hints section is Chapter 5
There are many more things to tuning tips, but by far, getting your SQL to use indexes is the primary one and you'll have to get EP results to see which indexes are being used (the FREE Toad program shows EP results nicely).
Hope this helps,
Tyler

Similar Messages

Monitoring/ tuning tool for sql server and os environment

What is a good tool for monitoring/tuning OS and SQL layers.

OS and SQL are different things, and I am not sure what you mean under layers.
To further expand my question, what OS build, what SQL Server edition?
All these have enormous impact on strategy.
Then the question is for what? OLTP need one tuning, DW another.
Monitoring is also a question of budget, how much allowed to spend?
Secondly, this forum is not dedicated to these kinds of questions.
Arthur My Blog

How to use Tuning Pack for SQL tuning

We're just getting started with 10g, and I'm more familiar with 9i. In OEM 9i, there was something called Oracle SQL Analyze. It allowed you to work on a problem SQL statement, adding hints, making other changes, etc., and then you could easily compare the plan for two versions of a query. You could also execute right from there and it'd let you click on a tab to view the statistics. You could compare the statistics for two versions of the same statement.
I don't see anything like this in 10.1 GC, and that's with both the Diagnostic and Tuning Packs activated. There are a number of ways you can identify an SQL for analysis, then get an explain plan, then get some recommendations. But I don't see anything that allows you to add hints, compare different versions of the explain plan, or compare the statistics for different versions of a statement.
Am I missing something?
Thanks.
Dave

Rodney,
Thanks for the reply. Yes, I agree, the Java console which runs directly on Windows is quite limited. Change Manager is there, as you indicated. However, MetaLink note 277066.1 indicates that "Tuning Pack Functionality" is also available in the Java version, and I don't see any of it there.
What I'm looking for is a framework for testing different versions of an SQL statement. I want to be able to execute the current version of a statement and, for example, a modified version with a hint added. I want to be able to see at least the basic statisitics comparing the two exections (e.g., elapsed time, logical reads, physical reads). This was possible with SQL Analyze in 9i, but I can't find anything like it in 10g.
I have found both the 10g advisors you mentioned and they do seem to work, but they don't provide the same flexibility and power for working on statement tuning apart from what the advisors recommend.
Thanks for all the suggestions/ideas...
Dave

Tuning needed for sql:EXPLAIN PLAN attached

DB Version:10gR2
The below sql was running slow, so i took an explain plan
SQL> explain plan for
2 SELECT COUNT(1) FROM SHIP_DTL WHERE
3 SHIP_DTL.PLT_ID = 'AM834'
4 AND SHIP_DTL.WHSE = '34' AND
5 SHIP_DTL.STAT_CODE != '845'
6 ORDER BY SHIP_DTL.LOAD_SEQ ASC;
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
| Id | Operation                    | Name             | Rows | Bytes | Cost (%CPU)|
|   0 | SELECT STATEMENT             |                   |     1 |    18 |     5 (20)|
|   1 | SORT AGGREGATE              |                   |     1 |    18 |            |
|* 2 |   TABLE ACCESS BY INDEX ROWID| SHIP_DTL        |   200 | 3600 |     5 (20)|
|* 3 |    INDEX RANGE SCAN          | SHIP_DTL_IND_4 |   203 |       |     3   (0)|
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
   2 - filter("SHIP_DTL"."WHSE"='34' AND "SHIP_DTL"."STAT_CODE"<>845)
   3 - access("SHIP_DTL"."PLT_ID"='AM834')Why is there an INDEX RANGE scan where there is no BETWEEN operator in the query? What are various options(indexes, rewriting query) in tuning this query?

james_p wrote:
DB Version:10gR2
The below sql was running slow, so i took an explain planCheck your plan, the optimizer estimates that the following query:
select count(*)
from SHIP_DTL
where "SHIP_DTL"."PLT_ID"='AM834';only returns 200 records. Is this correct? Please post the result of above query.
It probably isn't the case, because retrieving 200 records per index range scan and single row random table access shouldn't take long, at maximum a couple of seconds if you need to read each block actually from disk rather than from the cache.
If the estimate is wrong you need to check the statistics on the table and index that were used by the optimizer to come to that conclusion.
Are you sure that this plan is the actual plan used at execution time? You can check for the actual plans used to execute by using the DBMS_XPLAN.DISPLAY_CURSOR function in 10g if the SQL is still cached in the Shared Pool. You need to pass the SQL_ID and SQL_CHILD_NUMBER which you can retrieve from V$SESSION while the statement is executing.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

SQL Tuning Pack for 10G R2 database

Hi,
I am looking for a SQL tuning pack plug in with SQL Developer 2.1 release for Oracle 10g R2 database.
Any information this would be appreciated.
Thanks,
Patchava

There is no 'tuning pack' plugin for SQL Developer, We can process trace files, monitor sessions etc.
If you are looking for specifics on things like SQL Advisor, SQL Profiles and things, we do not have specific features for them yet, but we have planned them in the future.
Barry

SQL tuning set for specific SQLID

Hi,
Is it possible to create SQL tuning set for specific SQLID's?
Advance thanks!

do you have any code or some package to do this?As long as those statements are in AWR or the cursor cache then you can use
DBMS_SQLTUNE.SELECT_CURSOR_CACHE or
DBMS_SQLTUNE.SELECT_WORKLOAD_REPOSITORY For example something like this:
begin
DBMS_SQLTUNE.CREATE_SQLSET(
    sqlset_name => 'my_tuning_set',
    description => 'my tuning set');
end;
DECLARE
baseline_cursor DBMS_SQLTUNE.SQLSET_CURSOR;
BEGIN
OPEN baseline_cursor FOR
      SELECT VALUE(p)
      FROM   TABLE(DBMS_SQLTUNE.SELECT_CURSOR_CACHE
             (basic_filter      => 'sql_id in (''1'',''2'',''3'')',
              attribute_list    => 'ALL'
              )) p;
    DBMS_SQLTUNE.LOAD_SQLSET(
             sqlset_name     => 'my_tuning_set',
             populate_cursor => baseline_cursor);
END;
/

SQL tuning Advisor for old statements

Hi all,
i've identified SQL ID (through snapshots AWR) that make me performance problem. This is a old select statement (Mar 10, 2008) and when i try to run sql tuning advisor, it shows me this error:
"There was a problem creating a SQL tuning task. ORA-13780: SQL statement does not exist. ORA-06512"
I've set AWR for retain 60 days of Snapshot Retention, why i can't run tuning advisor for this statement??
thanks very much for answers.
Andrea

Hi
The problem is that the information of AWR is based on Historical information that Oracle retrieve of historical tables . AWR means Automatic Workload Repository.
But when you execute the SQL tuning advisor task, Oracle needs retrieve the information of sql statement from SHARED POOL.
The Library Cache is a part of Shared pool and contains an area named SQLAREA that stored information of execution plan for sql statements. This memory area is managed by LRU alghoritm.(last recently used) and the error is produced because this sql statement not is stored in this memory area.
When the sql stament not reside in memory Oracle can't build the execution plan and then the error appear
Regards

Can DBMS_ADVISOR package be used for SQL Tuning Advisor ?

Can DBMS_ADVISOR package be used for SQL Tuning Advisor ?

SQL> SELECT * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE 11.1.0.6.0 Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production

Additional licenses reuired for using Sql Tuning Advisor In SQL Developer 4.0.3

Hi,
We have Oracle Database 11g Enterprise Edition Release 11.2.0.3.0. Do we need to purchase an additional oracle license for using SQL Tuning Advisor Option in SQL Developer 4.0.3

We have Oracle Database 11g Enterprise Edition Release 11.2.0.3.0. Do we need to purchase an additional oracle license for using SQL Tuning Advisor Option in SQL Developer 4.0.3
The Oracle Tuning Pack is DATABASE functionality - it is part of the database. Sql Developer just uses it.
Yes - to use ANY of the features of the tuning pack requires an extra cost license.
http://docs.oracle.com/cd/B28359_01/license.111/b28287/options.htm#CIHFIHFG
Oracle Tuning Pack
The Oracle Tuning Pack provides database administrators with expert performance management for the Oracle environment, including SQL tuning and storage optimizations. The Oracle Diagnostic Pack is a prerequisite product to the Oracle Tuning Pack. Therefore, to use the Tuning Pack, you must also have a Diagnostic Pack.
The Tuning Pack includes the following features:
SQL Access Advisor
SQL Tuning Advisor
Automatic SQL Tuning
SQL Tuning Sets
SQL Monitoring
Reorganize objects
In order to use the features listed above, you must purchase licenses for the Tuning Pack, with one exception: SQL Tuning Sets can be used if you have licensed either the Tuning Pack or Oracle Real Application Testing. A new initialization parameter, CONTROL_MANAGEMENT_PACK_ACCESS, is introduced to control access to the Diagnostic Pack and Tuning Pack in the database server. This parameter can be set to one of three values:
DIAGNOSTIC+TUNING: Diagnostic Pack and Tuning Pack functionally is enabled in the database server.
DIAGNOSTIC: Only Diagnostic Pack functionality is enabled in the server.
NONE: Diagnostic Pack and Tuning pack functionally is disabled in the database server.
The Tuning Pack functionality can be accessed by the Enterprise Manager links as well as through the database server command-line APIs. The use of either interface requires licensing of the Tuning Pack

Needs tips for tuning Streams 10g propagation

I setup bi-directional streams replication in Oracle 10.2.0.3 non-RAC between a pair of Solaris 10 servers on the same subnet with 100 Mbps fiber connection. Setup was done using MAINTAIN_SCHEMAS and it uses queue-to-queue propagation. Everything works well in both databases, but performance bottlenecks occur with propagation. Please advise on tuning options for Streams propagation.
Example, while importing 100 million rows into the first DB we see the count continually rise in both databases at a ratio of 5:1. That is, the local db grows five times faster than the remote db, so by the time the first database had 20 million rows loaded the second db only received 4 million rows through replication. As time went on the ratio got a bit worse, all the way down to 10:1. Both DBs have a 3 GB SGA and 1 GB pga. The AWR/ADDM reports very good statistics.
There are 4 capture processes in each db, and I raised the number of apply processes in each db to 6 with no impact detected after the change. All of these apply and capture processes seem to be starved for work. Capture continually goes into the state of "paused for flow control" while waiting for things to propagate out.
From what I have read in the Oracle Streams documentation, propagation is not parallelized between a given source + destination pair. What options do I have?

AQ_TM_PROCESSES sure makes life interesting. I agree with the recommendation to completely omit this parameter from your spfile and let Oracle auto-manage it, but that does not mean Streams will always work right. Sometimes flow control will get stuck in the on position, and the way you kick Oracle in the pants is to manually set AQ_TM_PROCESSES to some value and then remove the parameter later to get back to the recommended configuration.
I have read a few things about creating more propagation jobs. That is, simulate parallelism through multiple jobs because propagation parallelism is not supported. Right now my database only has one schema that owns one dblink to a single remote DB, and there is one propagation job configured for q2q over that link. This was all setup by the Oracle scripts when I ran maintain_schemas to setup replication. I'd like more documentation from Oracle on how else it could be configured or modified to have more propagation jobs to simulate parallelism.
Another angst ... the Oracle docs suggest when importing large tables to set commit=y so that if the process dies you can re-run the same import command and let Oracle ignore errors about existing rows. Yes, commit=y is great for importing into Streams because things will propagate and apply immediately with lower impact on flow / buffers / undo. But, wow, massive penalty if you follow their advice completely. For example, I killed the import after 3 million rows (6 hours) and restarted it. During the second attempt of importing data each of the 3 million rows generated an error but import kept going. It took 4 days to get past the errors! Recall it only took 6 hours to load the 3 million rows, but it took 96 hours to resume the import and get back to that same point. It would have been much better to truncate the table and let import reload things rather than generate errors.

Increase Performance and ROI for SQL Server Environments

May 2015
Explore
The Buzz from Microsoft Ignite 2015
NetApp was in full force at the recent Microsoft Ignite show in Chicago, talking about solutions for hybrid cloud, and our proven solutions for Microsoft SQL Server and other Microsoft applications.
Hot topics at the NetApp booth included:
OnCommand® Shift. A revolutionary technology that lets you move virtual machines back and forth between VMware and Hyper-V environments in minutes.
Azure Site Recovery to NetApp Private Storage. Replicate on-premises SAN-based applications to NPS for disaster recovery in the Azure cloud.
These tools give you greater flexibility for managing and protecting important business applications.
Chris Lemmons
Director, EIS Technical Marketing, NetApp
If your organization runs databases such as Microsoft SQL Server and Oracle DB, you probably know that these vendors primarily license their products on a "per-core" basis. Microsoft recently switched to "per-core" rather than "per-socket" licensing for SQL Server 2012 and 2014. This change can have a big impact on the total cost of operating a database, especially as core counts on new servers continue to climb. It turns out that the right storage infrastructure can drive down database costs, increase productivity, and put your infrastructure back in balance.
In many customer environments, NetApp has noticed that server CPU utilization is low—often on the order of just 20%. This is usually the result of I/O bottlenecks. Server cores have to sit and wait for I/O from hard disk drives (HDDs). We've been closely studying the impact of all-flash storage on SQL Server environments that use HDD-based storage systems. NetApp® All Flash FAS platform delivers world-class performance for SQL Server plus the storage efficiency, application integration, nondisruptive operations, and data protection of clustered Data ONTAP®, making it ideal for SQL Server environments.
Tests show that All Flash FAS can drive up IOPS and database server CPU utilization by as much as 4x. And with a 95% reduction in latency, you can achieve this level of performance with half as many servers. This reduces the number of servers you need and the number of cores you have to license, driving down costs by 50% or more and paying back your investment in flash in as little as six months.
Figure 1) NetApp All Flash FAS increases CPU utilization on your SQL Server database servers, lowering costs.
Source: NetApp, 2015
Whether you're running one of the newer versions of SQL Server or facing an upgrade of an earlier version, you can't afford not to take a second look at your storage environment.
End of Support for Microsoft SQL Server 2005 is Rapidly Approaching
Microsoft has set the end of extended support for SQL Server 2005 for April 2016—less than a year away. With support for Microsoft Windows 2003 ending in July 2015, time may already be running short.
If you're running Windows Server 2003, new server hardware is almost certainly needed when you upgrade SQL Server. Evaluate your server and storage options now to get costs under control.
Test Methodology
To test the impact of flash on SQL Server performance, we replaced a legacy HDD-based storage system with an All Flash FAS AFF8080 EX. The legacy system was configured with almost 150 HDDs, a typical configuration for HDD storage supporting SQL Server. The AFF8080 EX used just 48 SSDs.
Table 1) Components used in testing.
Test Configuration Components
Details
SQL Server 2014 servers
Fujitsu RX300
Server operating system
Microsoft Windows 2012 R2 Standard Edition
SQL Server database version
Microsoft SQL Server 2014 Enterprise Edition
Processors per server
2 6-core Xeon E5-2630 at 2.30 GHz
Fibre channel network
8Gb FC with multipathing
Storage controller
AFF8080 EX
Data ONTAP version
Clustered Data ONTAP® 8.3.1
Drive number and type
48 SSD
Source: NetApp, 2015
The test configuration consisted of 10 database servers connected through fibre channel to both the legacy storage system and the AFF8080 EX. Each of the 10 servers ran SQL Server 2014 Enterprise Edition.
The publicly available HammerDB workload generator was used to drive an OLTP-like workload simultaneously from each of the 10 database servers to storage. We first directed the workload to the legacy storage array to establish a baseline, increasing the load to the point where read latency consistently exceeded 20ms.
That workload was then directed at the AFF8080 EX. The change in storage resulted in an overall 20x reduction in read latency, a greater than 4x improvement in IOPS, and a greater than 4x improvement in database server CPU utilization.
Figure 2) NetApp All Flash FAS increases IOPS and server CPU utilization and lowers latency.
Source: NetApp, 2015
In other words, the database servers are able to process four times as many IOPS with dramatically lower latency. CPU utilization goes up accordingly because the servers are processing 4x the work per unit time.
The All Flash FAS system still had additional headroom under this load.
Calculating the Savings
Let's look at what this performance improvement means for the total cost of running SQL Server 2014 over a 3-year period. To do the analysis we used NetApp Realize, a storage modeling and financial analysis tool designed to help quantify the value of NetApp solutions and products. NetApp sales teams and partners use this tool to assist with return on investment (ROI) calculations.
The calculation includes the cost of the AFF8080 EX, eliminates the costs associated with the existing storage system, and cuts the total number of database servers from 10 to five. This reduces SQL Server licensing costs by 50%. The same workload was run with five servers and achieved the same results. ROI analysis is summarized in Table 2.
Table 2) ROI from replacing an HDD-based storage system with All Flash FAS, thereby cutting server and licensing costs in half.
Value
Analysis Results
ROI
65%
Net present value (NPV)
$950,000
Payback period
six months
Total cost reduction
More than $1 million saved over a 3-year analysis period compared to the legacy storage system
Savings on power, space, and administration
$40,000
Additional savings due to nondisruptive operations benefits (not included in ROI)
$90,000
Source: NetApp, 2015
The takeaway here is that you can replace your existing storage with All Flash FAS and get a big performance bump while substantially reducing your costs, with the majority of the savings derived from the reduction in SQL Server licensing costs.
Replace your existing storage with All Flash FAS and get a big performance bump while substantially reducing your costs.
Maximum SQL Server 2014 Performance
In addition to the ROI analysis, we also measured the maximum performance of the AFF8080 EX with SQL Server 2014. A load-generation tool was used to simulate an industry-standard TPC-E OLTP workload against an SQL Server 2014 test configuration.
A two-node AFF8080 EX achieved a maximum throughput of 322K IOPS at just over 1ms latency. For all points other than the maximum load point, latency was consistently under 1ms and remained under 0.8ms up to 180K IOPS.
Data Reduction and Storage Efficiency
In addition to performance testing, we looked at the overall storage efficiency savings of our SQL Server database implementation. The degree of compression that can be achieved is dependent on the actual data that is written and stored in the database. For this environment, inline compression was effective. Deduplication, as is often the case in database environments, provided little additional storage savings and was not enabled.
For the test data used in the maximum performance test, we measured a compression ratio of 1.5:1. We also tested inline compression on a production SQL Server 2014 data set to further validate these results and saw a 1.8:1 compression ratio.
Space-efficient NetApp Snapshot® copies provide additional storage efficiency benefits for database environments. Unlike snapshot methods that use copy-on-write, there is no performance penalty; unlike full mirror copies, NetApp Snapshot copies use storage space sparingly. Snapshot copies only consume a small amount of storage space for metadata and additional incremental space is consumed as block-level changes occur. In a typical real-world SQL Server deployment on NetApp storage, database volume Snapshot copies are made every two hours.
First introduced more than 10 years ago, NetApp FlexClone® technology also plays an important role in SQL Server environments. Clones are fully writable, and, similar to Snapshot copies, only consume incremental storage capacity. With FlexClone, you can create as many copies of production data as you need for development and test, reporting, and so on. Cloning is a great way to support the development and test work needed when upgrading from an earlier version of SQL Server. You'll sometimes see these types of capabilities referred to as "copy data management."
A Better Way to Run Enterprise Applications
The performance benefits that all-flash storage can deliver for database environments are significant: more IOPS, lower latency, and an end to near-constant performance tuning.
If you think the performance acceleration that comes with all-flash storage is cost prohibitive, think again. All Flash FAS doesn't just deliver a performance boost, it changes the economics of your operations, paying for itself with thousands in savings on licensing and server costs. In terms of dollars per IOPS, All Flash FAS is extremely economical relative to HDD.
And, because All Flash FAS runs NetApp clustered Data ONTAP, it delivers the most complete environment to support SQL Server and all your enterprise applications with capabilities that include comprehensive storage efficiency, integrated data protection, and deep integration for your applications.
For complete details on this testing look for NetApp TR-4303, which will be available in a few weeks. Stay tuned to Tech OnTap for more information as NetApp continues to run benchmarks with important server workloads including Oracle DB and server virtualization.
Learn more about NetApp solutions for SQL Server and NetApp All-flash solutions.
Quick Links
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May 2015
Explore
The Buzz from Microsoft Ignite 2015
NetApp was in full force at the recent Microsoft Ignite show in Chicago, talking about solutions for hybrid cloud, and our proven solutions for Microsoft SQL Server and other Microsoft applications.
Hot topics at the NetApp booth included:
OnCommand® Shift. A revolutionary technology that lets you move virtual machines back and forth between VMware and Hyper-V environments in minutes.
Azure Site Recovery to NetApp Private Storage. Replicate on-premises SAN-based applications to NPS for disaster recovery in the Azure cloud.
These tools give you greater flexibility for managing and protecting important business applications.
Chris Lemmons
Director, EIS Technical Marketing, NetApp
If your organization runs databases such as Microsoft SQL Server and Oracle DB, you probably know that these vendors primarily license their products on a "per-core" basis. Microsoft recently switched to "per-core" rather than "per-socket" licensing for SQL Server 2012 and 2014. This change can have a big impact on the total cost of operating a database, especially as core counts on new servers continue to climb. It turns out that the right storage infrastructure can drive down database costs, increase productivity, and put your infrastructure back in balance.
In many customer environments, NetApp has noticed that server CPU utilization is low—often on the order of just 20%. This is usually the result of I/O bottlenecks. Server cores have to sit and wait for I/O from hard disk drives (HDDs). We've been closely studying the impact of all-flash storage on SQL Server environments that use HDD-based storage systems. NetApp® All Flash FAS platform delivers world-class performance for SQL Server plus the storage efficiency, application integration, nondisruptive operations, and data protection of clustered Data ONTAP®, making it ideal for SQL Server environments.
Tests show that All Flash FAS can drive up IOPS and database server CPU utilization by as much as 4x. And with a 95% reduction in latency, you can achieve this level of performance with half as many servers. This reduces the number of servers you need and the number of cores you have to license, driving down costs by 50% or more and paying back your investment in flash in as little as six months.
Figure 1) NetApp All Flash FAS increases CPU utilization on your SQL Server database servers, lowering costs.
Source: NetApp, 2015
Whether you're running one of the newer versions of SQL Server or facing an upgrade of an earlier version, you can't afford not to take a second look at your storage environment.
End of Support for Microsoft SQL Server 2005 is Rapidly Approaching
Microsoft has set the end of extended support for SQL Server 2005 for April 2016—less than a year away. With support for Microsoft Windows 2003 ending in July 2015, time may already be running short.
If you're running Windows Server 2003, new server hardware is almost certainly needed when you upgrade SQL Server. Evaluate your server and storage options now to get costs under control.
Test Methodology
To test the impact of flash on SQL Server performance, we replaced a legacy HDD-based storage system with an All Flash FAS AFF8080 EX. The legacy system was configured with almost 150 HDDs, a typical configuration for HDD storage supporting SQL Server. The AFF8080 EX used just 48 SSDs.
Table 1) Components used in testing.
Test Configuration Components
Details
SQL Server 2014 servers
Fujitsu RX300
Server operating system
Microsoft Windows 2012 R2 Standard Edition
SQL Server database version
Microsoft SQL Server 2014 Enterprise Edition
Processors per server
2 6-core Xeon E5-2630 at 2.30 GHz
Fibre channel network
8Gb FC with multipathing
Storage controller
AFF8080 EX
Data ONTAP version
Clustered Data ONTAP® 8.3.1
Drive number and type
48 SSD
Source: NetApp, 2015
The test configuration consisted of 10 database servers connected through fibre channel to both the legacy storage system and the AFF8080 EX. Each of the 10 servers ran SQL Server 2014 Enterprise Edition.
The publicly available HammerDB workload generator was used to drive an OLTP-like workload simultaneously from each of the 10 database servers to storage. We first directed the workload to the legacy storage array to establish a baseline, increasing the load to the point where read latency consistently exceeded 20ms.
That workload was then directed at the AFF8080 EX. The change in storage resulted in an overall 20x reduction in read latency, a greater than 4x improvement in IOPS, and a greater than 4x improvement in database server CPU utilization.
Figure 2) NetApp All Flash FAS increases IOPS and server CPU utilization and lowers latency.
Source: NetApp, 2015
In other words, the database servers are able to process four times as many IOPS with dramatically lower latency. CPU utilization goes up accordingly because the servers are processing 4x the work per unit time.
The All Flash FAS system still had additional headroom under this load.
Calculating the Savings
Let's look at what this performance improvement means for the total cost of running SQL Server 2014 over a 3-year period. To do the analysis we used NetApp Realize, a storage modeling and financial analysis tool designed to help quantify the value of NetApp solutions and products. NetApp sales teams and partners use this tool to assist with return on investment (ROI) calculations.
The calculation includes the cost of the AFF8080 EX, eliminates the costs associated with the existing storage system, and cuts the total number of database servers from 10 to five. This reduces SQL Server licensing costs by 50%. The same workload was run with five servers and achieved the same results. ROI analysis is summarized in Table 2.
Table 2) ROI from replacing an HDD-based storage system with All Flash FAS, thereby cutting server and licensing costs in half.
Value
Analysis Results
ROI
65%
Net present value (NPV)
$950,000
Payback period
six months
Total cost reduction
More than $1 million saved over a 3-year analysis period compared to the legacy storage system
Savings on power, space, and administration
$40,000
Additional savings due to nondisruptive operations benefits (not included in ROI)
$90,000
Source: NetApp, 2015
The takeaway here is that you can replace your existing storage with All Flash FAS and get a big performance bump while substantially reducing your costs, with the majority of the savings derived from the reduction in SQL Server licensing costs.
Replace your existing storage with All Flash FAS and get a big performance bump while substantially reducing your costs.
Maximum SQL Server 2014 Performance
In addition to the ROI analysis, we also measured the maximum performance of the AFF8080 EX with SQL Server 2014. A load-generation tool was used to simulate an industry-standard TPC-E OLTP workload against an SQL Server 2014 test configuration.
A two-node AFF8080 EX achieved a maximum throughput of 322K IOPS at just over 1ms latency. For all points other than the maximum load point, latency was consistently under 1ms and remained under 0.8ms up to 180K IOPS.
Data Reduction and Storage Efficiency
In addition to performance testing, we looked at the overall storage efficiency savings of our SQL Server database implementation. The degree of compression that can be achieved is dependent on the actual data that is written and stored in the database. For this environment, inline compression was effective. Deduplication, as is often the case in database environments, provided little additional storage savings and was not enabled.
For the test data used in the maximum performance test, we measured a compression ratio of 1.5:1. We also tested inline compression on a production SQL Server 2014 data set to further validate these results and saw a 1.8:1 compression ratio.
Space-efficient NetApp Snapshot® copies provide additional storage efficiency benefits for database environments. Unlike snapshot methods that use copy-on-write, there is no performance penalty; unlike full mirror copies, NetApp Snapshot copies use storage space sparingly. Snapshot copies only consume a small amount of storage space for metadata and additional incremental space is consumed as block-level changes occur. In a typical real-world SQL Server deployment on NetApp storage, database volume Snapshot copies are made every two hours.
First introduced more than 10 years ago, NetApp FlexClone® technology also plays an important role in SQL Server environments. Clones are fully writable, and, similar to Snapshot copies, only consume incremental storage capacity. With FlexClone, you can create as many copies of production data as you need for development and test, reporting, and so on. Cloning is a great way to support the development and test work needed when upgrading from an earlier version of SQL Server. You'll sometimes see these types of capabilities referred to as "copy data management."
A Better Way to Run Enterprise Applications
The performance benefits that all-flash storage can deliver for database environments are significant: more IOPS, lower latency, and an end to near-constant performance tuning.
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For complete details on this testing look for NetApp TR-4303, which will be available in a few weeks. Stay tuned to Tech OnTap for more information as NetApp continues to run benchmarks with important server workloads including Oracle DB and server virtualization.
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Can we use xml Publisher reporting for sql* Plus in EBS

Hello All,
The current report is designed in Sql* Plus Executable report and the output is in txt format, Now the requirement is to have the output in Excel format.
So is it possible to use the xml reporting and make the output as Excel from the word template we design from MSword as we do for rdf(I have done few reports created in rdf to xml publisher reports in EBS and stand alone as well.).
Do the same procedure will suit for Sql*Plus reports tooo or Is there any work around to achieve this.
Thanks and Regards
Balaji.

Hi
Thanks for the reply..
I tried to do the follwoing
1. changed the output to xml in the conc. prog.
2. ran the same report but i am getting the follwoing error in the output file
The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later.
Invalid at the top level of the document. Error processing resource
Other reports which are using the Oracle Reports(rdf) as source, i am able to generated the xml as expected....
So my question is whether we can use sql* reports executable and generate xml in the conc.prog.
if any one has used the sql*reports for xml publisher reporting... please let me know, so that if its possible i will check my sql needs some validation or tuning...
thanks in advance
Balaji.

Is it possible to have different authentication mode for SQL Server Database Engine and corresponding SQL Server instance?

Hi,
I have installed the x64 SQL Server 2008 R2 Express with default settings and run MBSA 2.3 (using default settings too). It shows three SQL Server instances: MSSQL10_50.SQLEXPRESS, SQLEXPRESS and SQLEXPRESS (32-bit). For the first, authentication
mode is Windows, for the rest two - mixed. Here https://social.msdn.microsoft.com/Forums/sqlserver/en-US/03e470dc-874d-476d-849b-c805acf5b24d/sql-mbsa-question-on-folder-permission?forum=sqlsecurity question
about such multiple instances was asked and the answer is that "MSSQL10.TEST_DB
is the instance ID for the SQL Server Database Engine of the instance, TEST_DB", so in my case, it seems that MSSQL10_50.SQLEXPRESS is the instance ID for SQL Server Database Engine of the SQLEXPRESS instance.
I have two questions:
1) How can it be that SQL Server DB Engine instance has different authentication mode than corresponding SQL Server Instance?
2) Why 32-bit instance reported although I installed only 64-bit version?
Also, this https://social.technet.microsoft.com/Forums/security/en-US/6b12c019-eaf0-402c-ab40-51d31dce968f/mbsa-23-reporting-sql-32bt-instance-is-running-in-mixed-mode-when-it-is-set-to-integrated?forum=MBSA question seems to be related to this
issue, but there is no answer :(.
Upd: Tried on clean Windows 8 installation and Windows 7 with the same result.

Because I DO NOT want the three people who will be having access to the production SQL Server to also have access to the primary host ProductionA. Since I have to allow them to RDC into the box to manage the SQL Server, I figure why not create
a separate VM for each one of them and they can RDC into those instead.
Does this make any sense?
Any tips are greatly appreciated. The main reason for doing this is because the three people who will be accessing the box, I need to isolate each one of them and at the same time keep them off of the primary ProductionA.
Thanks for your help.
M
Hello M,
Since you dont want the 3 guys to have access to Production machine A.You can install SQL Server client .By client i mean SQL server management studio(SSMS) on there local desktop and then create login for them in SQL Server.Open port on which your SQL server
is running for three of the machines so that they can connct.Now with SSMS installed on each machine each can connect to SQL server from there own machine.
I would also like you to be cautious with giving Sysadmin privilege to all three of them ,first please note down what task they would do and then decide what rights to be provided.
Your option will also work but you need to create 3 VM for that .Which is more tedious task.
Hope this helps
Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers

Download for SQL Server machine running Windows Server 2008 Enterprise SP2

I am confused what 11g product to download and how to configure for the above server. I just need for SQL Server 2008 to be able to communicate with some Oracle databases. I don't need to manage the Oracle database, nor do I need to create one. I just need to be able to create linked servers, use SQL Plus, and create some SSIS or DTS packages that will bring Oracle data into the SQL Server. I think I just need the client, but for 11g, I see it is less than 1GB in size. I am afraid I may be missing something because I thought the client downloads were about 2GB, but the 2GB downloads are not called "client". This is a 64bit machine running an Intel Xeon X7460 chip.
Our server has a C:\, D:\, and E:\ drive on it. The data (.mdf) is on drive E:\. The normal environment is on C:\ like usual. I also need to know if I need to set environment variables which I read about, but am not sure how to set them and make them stay, or if the software does that.
As an aside, I tried installing a 10g on there that the DBA downloaded and could never get it to work, although I was successful in getting tnsping to work, but SQLPlusW would close on me when I tried to connect and SQLPlus failed with some error but can't remember what right now. I uninstalled it. I think it may have been the wrong download.
I would appreciate any info at all, even if you don't know about everything said here.
I have a link here where I think I am close, but I still am not sure. Let me know if this is correct and which link to click. If I am wrong, please provide the correct link if you can. Thank you.
[http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-win64soft-094461.html]
Edited by: user486992 on Oct 20, 2010 11:07 AM

Hi,
To integrate Oracle with SQL server you need the following
Install Oracle 11g Release 2 client software
Install Oracle 11g Release 2 ODAC software
Restart SQL services
Configure OraOLEDB.Oracle provider
Create linked server
Add remote logins for linked server
see this links
http://www.mssqltips.com/tip.asp?tip=1433
http://www.easysoft.com/applications/oracle/database-gateway-dg4odbc.html :)

Performance Tuning Certification for Application Developer

Hi,
Can you please advise if there is any Oracle Performance Tuning certification for an Application Developer and Oracle 9i to 10G migration certification? If yes, can you please let me know its Oracle examination number?
I have already passed 1Z0-007 and 1Z0-147 in Oct 2008.
Thanks in advance,
Sandeep Kumar

... if there is any Oracle Performance Tuning certification for an Application Developer ...There is no performance tuning related certification for application developers. There is one for the DBA track.
Also -- to answer your question in the other thread:
So to clear this certification do I need to re-appear all the 3 exams as they were given in 2008 or just 1Z0-146 is enough.Having passed 1Z0-007 and 1Z0-147, if you pass 1Z0-046, you will gain the certification: Oracle Advanced PL/SQL Developer Certified Professional

Tuning tips for sql

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