Help with fine tuning specification.

I must stress I'm considering this upgrade not because I have a proven need for a newer, faster machine but because I'd like to keep up to date (Snow Leopard) and because I'm in the fortunate position of being able to afford it!
I'm not into video processing, 3D animation or even much photo work (in Aperture) - most of my use being text or web based so I understand that any Mac Pro will be more than up to the tasks I ask of it. But…
1) Given my "light" use by professional standards, would I notice any real difference by paying the not inconsiderable premium for the 8 core or could the 4 core actually seem faster?
2) If 4 core, would the upgrade to 2.93GHz be noticeable (or worth the money!)
3) Assuming I go 4 core, am I right in thinking that if I buy the standard 3GB memory, then to buy say 4GB from Crucial (at £77) I'd have to remove one 1GB as supplied so end up with 6GB - i.e. only marginally more than the 6GB option from Apple?
4) Would I notice improved graphics on my 30" by going for the 4870 instead of the standard card?
Thanks for any input.

The GT120 handles 2D just fine, so no need for the ATI unless it just does more in Snow Leopard.
4-core is fine. Really. I have Core i7 920s and they fly at web, Office, all the basics and then some.
Memory is triple channel, or dual channel. So while it may be possible to boot with 1 DIMM, it should be in two sets of two, or a set of three. In your shoes, I'd get 3 x 2GB from Apple and be done with it, same cost as buying and upgrading.
4GB may require 3 x 4GB or 4 x 4GB as mixing two 4GB and two 1GB may not work.
http://www.macsales.com/memory/ - look for Mac Pro 2009 (DDR3 ECC).
Do you game? 3D? plan or might install Windows? GT and ATI don't get along. And there is the Nvidia GTX 285 ($419-449) out there. For Windows, I prefer Nvidia, though ATI has had the better drivers in Mac OS so far.
One person bought the 2.66 and then dropped in retail 3.3GHz Nehalem part - they never even used the 2.66 (sold but kept until they stress tested the system).
You'll fall in love with it and Snow Leopard / Windows 7 with the memory and system bandwidth.

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Anyone? You can test what im talking about by making a box. Copy it 3 times upwards in a nice evenly spaced row. convert them to movie clips then use the bone tool to connect all the boxes. Watch the boxes shift as you connect them. The same shift will happen when you try and edit where the bone connects to each box.

Where clause "where 1=1" help with SQL tuning

Hello Tuning experts,
Is it helpful to use "where 1=1" and then put all the joins and conditions in the "AND" statements of the SQL when writing SQL queries. I would like to know if it helps with query performance to write SQL queirs that way.
Thanks in advance.
Edited by: oracle_developer on Oct 8, 2012 10:41 AM

You can see here that "where 1 = 1" is gone from the predicate info in the explain plan.
The optimizer simply discarded it.
SQL> explain plan for
2 select *
3 from emp
4 where 1 = 1
5 and job = 'SALESMAN';
Explained.
PLAN_TABLE_OUTPUT
Plan hash value: 3956160932
| Id | Operation         | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT |      |     3 |   114 |     3   (0)| 00:00:01 |
|* 1 | TABLE ACCESS FULL| EMP |     3 |   114 |     3   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - filter("JOB"='SALESMAN')
13 rows selected.

Need help in Fine Tuning this query

Hello Gurus,
The below sql's are from Application engine . It runs more than 5 hours to complete . I have fewer knowledge on sql tuning and request to repharse the sql's to perform and complete the program within One hour.
PS_GE_GAPS_INV is going thru Range Scan and TAO table is going for Full Table Scan.
I have indexes on PS_GE_GAPS_INV which is the main table. Iam joining TAO(Temporary table) and Main Table with common keys defined thru Application designer.
Appreciate all your help.
First Sql :
UPDATE PS_GE_GAPS_INV
SET LAST_DTTM_UPDATE = TO_DATE(SYSDATE,'DD-MM-YY-HH24.MI.SS."000000"')
WHERE
(BUSINESS_UNIT,RECONCILE_DT,GE_INVENTORY_SOURC,TAG_NUMBER,ASSET_ID,SERIAL_ID_TR,S
ERIAL_ID,GE_CUSTODIAN_PHY,CUSTODIAN,DEPTID_P,DEPTID,CHARTFIELD2,CHARTFIELD3,GE_GA
P_RULE,SEQUENCENO) IN (
SELECT DISTINCT B.BUSINESS_UNIT
,B.RECONCILE_DT
,B.GE_INVENTORY_SOURC
,B.TAG_NUMBER
,B.ASSET_ID
,B.SERIAL_ID_TR
,B.SERIAL_ID
,B.GE_CUSTODIAN_PHY
,B.CUSTODIAN
,B.DEPTID_P
,B.DEPTID
,B.CHARTFIELD2
,B.CHARTFIELD3
,B.GE_GAP_RULE
,B.SEQUENCENO
FROM PS_GE_GAPS_TAO A
, PS_GE_GAPS_INV B
WHERE A.BUSINESS_UNIT = B.BUSINESS_UNIT
AND (A.RECONCILE_DT = B.RECONCILE_DT
OR (A.RECONCILE_DT IS NULL
AND B.RECONCILE_DT IS NULL))
AND A.GE_GAP_RULE = B.GE_GAP_RULE
AND A.SEQUENCENO = B.SEQUENCENO
AND A.GE_INVENTORY_SOURC = B.GE_INVENTORY_SOURC
AND A.TAG_NUMBER = B.TAG_NUMBER
AND A.ASSET_ID = B.ASSET_ID
AND A.SERIAL_ID_TR = B.SERIAL_ID_TR
AND A.SERIAL_ID = B.SERIAL_ID
AND A.GE_CUSTODIAN_PHY = B.GE_CUSTODIAN_PHY
AND A.CUSTODIAN = B.CUSTODIAN
AND A.DEPTID_P = B.DEPTID_P
AND A.DEPTID = B.DEPTID
AND A.CHARTFIELD2 = B.CHARTFIELD2
AND A.CHARTFIELD3 = B.CHARTFIELD3
AND A.BUSINESS_UNIT = %Bind(BUSINESS_UNIT)
AND A.RECONCILE_DT = %Bind(RECONCILE_DT)
AND A.PROCESS_INSTANCE =%ProcessInstance)
Second Sql :
INSERT INTO PS_GE_GAPS_INV (BUSINESS_UNIT
, RECONCILE_DT
, GE_GAP_RULE
, SEQUENCENO
, GE_INVENTORY_SOURC
, TAG_NUMBER
, ASSET_ID
, SERIAL_ID_TR
, SERIAL_ID
, GE_CUSTODIAN_PHY
, CUSTODIAN
, VENDOR_ID
, DEPTID_P
, DEPTID
, CHARTFIELD2
, CHARTFIELD3
, GE_GAP_STATUS
, CERTMESSAGE
, LAST_DTTM_UPDATE
, COMMENT1
, ASSET_STATUS
, DESCR1
, DESCR
, NAME1_AC
, NAME1
, CATEGORY_DESCR
, CATEGORY
, OPERATING_UNIT_TO
, OPERATING_UNIT
, PROJECT_ID_P
, PROJECT_ID
, PRODUCT_TO
, PRODUCT
, INV_ITEM_ID
, ITEM_FIELD_C30_B
, ITEM_FIELD_C30_C)
SELECT DISTINCT B.BUSINESS_UNIT
, B.RECONCILE_DT
, B.GE_GAP_RULE
, B.SEQUENCENO
, B.GE_INVENTORY_SOURC
, B.TAG_NUMBER
, B.ASSET_ID
, B.SERIAL_ID_TR
, B.SERIAL_ID
, B.GE_CUSTODIAN_PHY
, B.CUSTODIAN
, B.VENDOR_ID
, B.DEPTID_P
, B.DEPTID
, B.CHARTFIELD2
, B.CHARTFIELD3
, B.GE_GAP_STATUS
, B.CERTMESSAGE
, B.LAST_DTTM_UPDATE
, B.COMMENT1
, B.ASSET_STATUS
, B.DESCR1
, B.DESCR
, B.NAME1_AC
, B.NAME1
, B.CATEGORY_DESCR
, B.CATEGORY
, B.OPERATING_UNIT_TO
, B.OPERATING_UNIT
, B.PROJECT_ID_P
, B.PROJECT_ID
, B.PRODUCT_TO
, B.PRODUCT
, B.INV_ITEM_ID
, B.ITEM_FIELD_C30_B
, B.ITEM_FIELD_C30_C
FROM PS_GE_GAPS_TAO B
WHERE B.BUSINESS_UNIT = %Bind(BUSINESS_UNIT)
AND B.RECONCILE_DT =%Bind(RECONCILE_DT)
AND NOT EXISTS (
SELECT 'X'
FROM PS_GE_GAPS_INV A
WHERE B.BUSINESS_UNIT = A.BUSINESS_UNIT
AND (B.RECONCILE_DT = A.RECONCILE_DT
OR (B.RECONCILE_DT IS NULL
AND A.RECONCILE_DT IS NULL))
AND B.GE_GAP_RULE = A.GE_GAP_RULE
AND B.SEQUENCENO = A.SEQUENCENO
AND B.GE_INVENTORY_SOURC = A.GE_INVENTORY_SOURC
AND B.TAG_NUMBER = A.TAG_NUMBER
AND B.ASSET_ID = A.ASSET_ID
AND B.SERIAL_ID_TR = A.SERIAL_ID_TR
AND B.SERIAL_ID = A.SERIAL_ID
AND B.GE_CUSTODIAN_PHY = A.GE_CUSTODIAN_PHY
AND B.CUSTODIAN = A.CUSTODIAN
AND B.DEPTID_P = A.DEPTID_P
AND B.DEPTID = A.DEPTID
AND B.CHARTFIELD2 = A.CHARTFIELD2
AND B.CHARTFIELD3 = A.CHARTFIELD3)
Third Sql :
INSERT INTO PS_GE_GAPST_TAO (BUSINESS_UNIT
, RECONCILE_DT
, GE_GAP_RULE
, SEQUENCENO
, GE_INVENTORY_SOURC
, TAG_NUMBER
, ASSET_ID
, SERIAL_ID_TR
, GE_CUSTODIAN_PHY
, SERIAL_ID
, CUSTODIAN
, DEPTID_P
, DEPTID
, CHARTFIELD2
, CHARTFIELD3
, PROCESS_INSTANCE
, GE_GAP_STATUS
, CERTMESSAGE
, LAST_DTTM_UPDATE
, COMMENT1
, ASSET_STATUS
, DESCR1
, DESCR
, VENDOR_ID
, NAME1_AC
, NAME1
, CATEGORY_DESCR
, CATEGORY
, OPERATING_UNIT_TO
, OPERATING_UNIT
, PROJECT_ID_P
, PROJECT_ID
, PRODUCT_TO
, PRODUCT
, INV_ITEM_ID
, ITEM_FIELD_C30_B
, ITEM_FIELD_C30_C)
SELECT DISTINCT BUSINESS_UNIT
, RECONCILE_DT
, GE_GAP_RULE
, SEQUENCENO
, GE_INVENTORY_SOURC
, TAG_NUMBER
, ASSET_ID
, SERIAL_ID_TR
, GE_CUSTODIAN_PHY
, SERIAL_ID
, CUSTODIAN
, DEPTID_P
, DEPTID
, CHARTFIELD2
, CHARTFIELD3
, %ProcessInstance
, GE_GAP_STATUS
, CERTMESSAGE
, LAST_DTTM_UPDATE
, COMMENT1
, ASSET_STATUS
, DESCR1
, DESCR
, VENDOR_ID
, NAME1_AC
, NAME1
, CATEGORY_DESCR
, CATEGORY
, OPERATING_UNIT_TO
, OPERATING_UNIT
, PROJECT_ID_P
, PROJECT_ID
, PRODUCT_TO
, PRODUCT
, INV_ITEM_ID
, ITEM_FIELD_C30_B
, ITEM_FIELD_C30_C
FROM ps_ge_gaps_inv B
WHERE b.business_unit = %Bind(BUSINESS_UNIT)
AND b.reconcile_dt =%Bind(RECONCILE_DT)
AND NOT EXISTS (
SELECT 'X'
FROM ps_ge_gaps_tao a
WHERE A.BUSINESS_UNIT = B.BUSINESS_UNIT
AND (A.RECONCILE_DT = B.RECONCILE_DT
OR (A.RECONCILE_DT IS NULL
AND B.RECONCILE_DT IS NULL))
AND A.GE_GAP_RULE = B.GE_GAP_RULE
AND A.SEQUENCENO = B.SEQUENCENO
AND A.GE_INVENTORY_SOURC = B.GE_INVENTORY_SOURC
AND A.TAG_NUMBER = B.TAG_NUMBER
AND A.ASSET_ID = B.ASSET_ID
AND A.SERIAL_ID_TR = B.SERIAL_ID_TR
AND A.SERIAL_ID = B.SERIAL_ID
AND A.GE_CUSTODIAN_PHY = B.GE_CUSTODIAN_PHY
AND A.CUSTODIAN = B.CUSTODIAN
AND A.DEPTID_P = B.DEPTID_P
AND A.DEPTID = B.DEPTID
AND A.CHARTFIELD2 = B.CHARTFIELD2
AND A.CHARTFIELD3 = B.CHARTFIELD3 )
Best Regards,
Bala

Are the statistics on your temp table up to date?. Either add an %UpdateStats SQL step after loading the temp table, or check the following notes if your database is Oracle and is a relatively current version:
pscbo_stats - Improving Statistics in Oracle RDBMS for PeopleSoft Enterprise [ID 1322888.1]
E-ORA PeopleSoft Enterprise Performance on Oracle 11g Database [ID 1460735.1]
Regards,
Bob

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Following query takes 8 secs. Any help will be appreciated
SELECT SUM(FuturesMarketVal) FuturesMarketVal
FROM (SELECT CASE WHEN null IS NULL THEN FuturesMarketVal
ELSE DECODE(FUTURES_NAME, null, FuturesMarketVal, 0)
END FuturesMarketVal
FROM (SELECT SUM( (a.FUTURES_ALLOC * (NVL(b.Futures_EOD_Price,0)/100 - NVL(c.Futures_EOD_Price,0)/100) * a.CONTRACT_SIZE) / DECODE(a.CONTRACT_SIZE,100000,1,1000000,4,3000000,12,1) ) FuturesMarketVal,
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/

Eric:
But there are only 5 records in cms_futures_price and 10 in cms_futures_trans :-)
OP:
I'm not usre what you are trying to fo here, but a couple of comments.
Since NULL IS NULL will always be true, you don;t really need the CASE statement. as it stands, your query will always return FuturesMarketVal. If the results are correct, then you can do without the DECODE as well.
Why are you calling fas_pas_pkg.get_weekday with a constant value? Can you not just use whatever it returns as a constant instead of calling the function?
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Hello, user has to input a sentence and then input word to find in a sentence
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initiate a counter variable(int).
Iterate your String with a for loop. Compare your charAt(iterator) to the given char.
If charAt(Iterator) == givenChar then counter++.
Et voila.

Help in fine tuning this query

My query id this,
select a.event_id,a.document_id
from sample_transaction a
where exists (select 1 from sample_transaction b where b.event_id <> a.event_id and b.document_id = a.document_id );
The execution plan is like this,
SELECT STATEMENT Cost = 5596
FILTER
TABLE ACCESS FULL SAMPLE_TRANSACTION
TABLE ACCESS BY INDEX ROWID SAMPLE_TRANSACTION
INDEX RANGE SCAN I_SAMPLE_TRANSACTION_FK_EVT
There are 6 million records in the table.
How can i fine tune this query so that i get the results
Example is
my table has
EVENT_ID DOCUMENT_ID
100 200
100 200
101 201
102 201
103 203
104 203
105 204
105 204
106 106
My result should be
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102 201
103 203
104 203
null

Based on your select statement, you will bring back every row in sample_transaction where the document is referenced by more than one event. Looking at it another way, the only rows skipped are those where the document is only used by one event.
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Help in fine tuning query

Hi all iam fairly new to oracle and trying to optimize a query which is taking more than 2 minutes to execute. Please provide me some suggestions on how to optimize this query.
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Edited by: 903555 on Dec 21, 2011 8:45 AM

903555 wrote:
Please find the information, let me know if any thing else required.Please re-read the thread I posted because this still isn't enough information to identify the problem.
Also, please use \ tags so fixed-width fonts display correctly.
For example:
\My Explain Plan Here\would display as:My Explain Plan HereIt looks like based on the explain plan Oracle is only expecting ONE row. Is that correct? Are your statistics up-to-date?

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https://discussions.apple.com/post!input.jspa?container=2998&containerType=14&qu estion=I+desperately+need+help+with+Mail%2C+specifically+sending
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I go into detail about my app below, but it gets long so for those who don't want to read that far, let me just put these two questions up front:
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http://www.immortalcoil.org/drake/Code.zip
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      Each reading is defined by:
      - A string of hiragana or katakana (Japanese phoenetic characters); and
      - Statistics that I keep to represent knowledge of that reading/kanji pair.Ideally the structure should be extensible. Later I might want to add statistics associated with the character itself rather than individual readings, for example. Right now I am thinking of building a data structure like so:
- A Vector that holds:
   - custom KanjiEntry objects that each hold
      - a kanji in a primitive char value; and
      - two (on, kun) arrays or Vectors of custom Reading objects that hold
         - the reading in a String; and
         - statistics of some sort, probably in primitive valuesFirst of all, is this approach sensible in the rough outlines?
Now, I need to be able to do the obvious things... save to and load from file, generate tables and views, and edit values. The quesiton of editting values raises the questions I identified above as (1) and (2). Say I want to pull up a reading, quiz the user on it, and update its statistics based on whether the user got it right or wrong. I could do all this through the KanjiEntry object with a setter method that takes a zillion arguments like:
theKanjiEntry.setStatistic(
"on",   // which set of readings
2,      // which element in that array or Vector
"score", // which statistic
98);      // the valueOr I could pass a clone of the Reading object out, work with that, then tell the KanjiEntry to replace the original with my modified clone.
My instincts balk at the first approach, and a little at the second. Doesn't it make more sense to work with a reference to the Reading object? Or is that bad encapsulation?
A second point. When running flash cards, I do not care about the subtlties of the structure, like whether a reading is an on or a kun (although this is important when browsing a table representing the entire structure). All I really care about is kanij/reading pairings. And I should be able to quickly poll the Reading objects to see which ones need quizzing the most, based on their statistics. I was thinking of making a nice neat Hashtable with the keys being the kanji characters in Strings (not the KanjiEntry objects) and the values being the Reading objects. The result would be two indeces to the Reading objects... the basic structure and my ad hoc hashtable for runninq quizzes. Then I would just make sure that they stay in sync in terms of the higher level structure (like if a whole new KanjiEntry got added). Is this bad form, or even downright dangerous?
Apart from good form, the other consideration bouncing around in my head is that if I get all crazy with deep cloning and filling the bottom level guys with instance methods then this puppy is going to get bloated or lag when there are several thousand kanji in memory at once.
Any help would be appreciated.
Drake

Usually by better design. Move methods that use the
getters inside the class that actually has the data....
As a basic rule of thumb:
The one who has the data is the one using it. If
another class needs that data, wonder what for and
consider moving that operation away from that class.
Or move from pull to push: instead of A getting
something from B, have B give it to A as a method
call argument.Thanks for the response. I think I see what you are saying.. in my case it is something like this.
Solution 1 (disfavored):
public class kanjiDrill{ // a chunk of Swing GUI or something
     public void runDrill(Vector kanjiEntries){
          KanjiEntry currentKanjiEntry = kanjiEntries.elementAt(0); // except really I will pick one randomly
          char theKanji = currentKanjiEntry.getKanji();
          String theReading = currentKanjiEntry.getReading();
          // build and show a flashcard based on theKanji and theReading
          // use a setter to change currentKanji's data based on whether the user answers correctly;
}Solution 2 (favored):
public class kanjiDrill{ // a chunk of Swing GUI or something
     public void runDrill(Vector kanjiEntries){
          KanjiEntry currentKanjiEntry = kanjiEntries.elementAt(0); // except really I will pick one randomly
          currentKanji.buildAndShowFlashcard(); // method includes updating stats
}I can definitely see the advantages to this, but two potential reasons to think hard about it occur to me right away. First, if this process is carried out to a sufficient extreme the objects that hold my data end up sucking in all the functionality of my program and my objects stop resembling natural concepts.
In your shopping example, say you want to generate price tags for the items. The price tags can be generated with ONLY the raw price, because we do not want the VAT on them. They are simple GIF graphics that have the price printed on a an irregular polygon. Should all that graphics generating code really go into the item objects, or should we just get the price out of the object with a simple getter method and then make the tags?
My second concern is that the more instance methods I put into my bottom level data objects the bigger they get, and I intend to have thousands of these things in memory. Is there a balance to strike at some point?
It's not really a setter. Outsiders are not setting
the items price - it's rather updating its own price
given an argument. This is exactly how it should be,
see my above point. A breach of encapsulation would
be: another object gets the item price, re-calculates
it using a date it knows, and sets the price again.
You can see yourself that pushing the date into the
item's method is much beter than breaching
encapsulation and getting and setting the price.So the point is not "don't allow access to the members" (which after all you are still doing, albeit less directly) so much as "make sure that any functionality implicated in working with the members is handled within the object," right? Take your shopping example. Say we live in a country where there is no VAT and the app will never be used internationally. Then we would resort to a simple setter/getter scheme, right? Or is the answer that if the object really is pure data are almost so, then it should be turned into a standard java.util collection instead of a custom class?
Thanks for the help.
Drake

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Can I get help with podcasts? When I try to open the podcasts tab, itunes crashes, says "itunes has detected a problem and must close", or the spanish equivalent since my xp is in spanish. everything else works fine, it even downloads podcasts and syncs.

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Download the iTunes programme (do not uninstall your current iTunes) and then "install" the new copy. At some stage you should see an option to "install" or "Repair". Take the Repair option.
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Emile

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