Difference between volatile and atomic variables (util.concurrent.atomic)

All,
Can some one explain to me the difference between using
volatile variables and atomic variables as incremental/decremental counters
that is shared by multiple threads.
when should I use volatile and when should I use atomic variables.

angeshwar wrote:
All,
Can some one explain to me the difference between using
volatile variables and atomic variables as incremental/decremental counters
that is shared by multiple threads.
when should I use volatile and when should I use atomic variables.
x++ is not atomic for a volatile variable. You can have ten threads executing that concurrently and only get a increment of one when it should have been ten. This problem won't happen with AtomicWhatever.

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Hi Experts,
What is the difference between Filter and Variables except user can give input dianamically in the case of Variables??
Thanks in Advance!
Sapna

HI,
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POSITION NUMBER(38)
COST NUMBER(38)
CARDINALITY NUMBER(38)
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PARTITION_STOP VARCHAR2(255)
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OTHER LONG
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I know we can set $APPLTMP and $APPLPTMP as per requirement.
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I know we can set $APPLTMP and $APPLPTMP as per requirement.
But I really want to know what is the exact difference between $APPLTMP and $APPLPTMP? Why there are those two variables? What is expected to be set for each?
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Hi,
Can anyone explain me the difference between char and varchar, and also the difference between varchar and varchar2...

Varchar2 is variable width character data type, so if you define column with width 20 and insert only one character to tis column only, one character will be stored in database. Char is not variable width so when you define column with width 20 and insert one character to this column it will be right padded with 19 spaces to desired length, so you will store 20 characters in the dattabase (follow the example 1). Varchar data type from Oracle 9i is automaticlly promoted to varchar2 (follow example 2)
Example 1:
SQL> create table tchar(text1 char(10), text2 varchar2(10))
2 /
Table created.
SQL> insert into tchar values('krystian','krystian')
2 /
1 row created.
SQL> select text1, length(text1), text2, length(text2)
2 from tchar
3 /
TEXT1 LENGTH(TEXT1) TEXT2 LENGTH(TEXT2)
krystian 10 krystian 8
Example 2:
create table tvarchar(text varchar(10))
SQL> select table_name,column_name,data_type
2 from user_tab_columns
3 where table_name = 'TVARCHAR'
4 /
TABLE_NAME COLUMN_NAME DATA_TYPE
TVARCHAR TEXT VARCHAR2
Best Regards
Krystian Zieja / mob

What is the difference between #variable_name and :variable_name?

Hi!
What is the difference between #variable_name and :variable_name?
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Why it does not work in the same way for variable default values when variable is used in filter? (It works in mapping)
I use variable in filter like T.OUT_DATE>convert(datetime,:LAST_UPDATE_DATE,121)
When I use my variable in package and do refresh it works fine. But when I try to execute the same interface with variable default value I get error. Seems that variable name has been not changed to the value. It does not work with default value in quotes neither without quotes.
Any ideas how to solve that?
Thank you in advance!
Edited by: user13278245 on Sep 15, 2010 4:34 AM

Question is how to make it work with default value, when I execute interface standalone, not in package? And why it works in mapping but not in filter?
+ I have found that it works if source is Oracle. It doesn't work only for MS SQL source.
Edited by: user13278245 on Sep 15, 2010 6:43 AM

Difference between Implicit and Explicit Cursors

Hi All,
Can you just tell me what is the difference between implicit and explicit cursor?
Thanks,
Padma

Hi ,
Implicit Cursor means ,the cursors which are defined impplicitly.Here we use curosr variables as "SQL%found,sql%not found,sql%is open.."
but explicit cursors defined by us like if u create a cursor C1 then
c1%found,c1% not found ,c1%open
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Difference between CHAR and VARCHAR2 datatype

Difference between CHAR and VARCHAR2 datatype
CHAR datatype
If you have an employee name column with size 10; ename CHAR(10) and If a column value 'JOHN' is inserted, 6 empty spaces will be inserted to the right of the value. If this was a VARCHAR column; ename VARCHAR2(10). How would it handle the column value 'JOHN' ?

The CHAR datatype stores fixed-length character strings, and Oracle compares CHAR values using blank-padded comparison semantics.
Where as the VARCHAR2 datatype stores variable-length character strings, and Oracle compares VARCHAR2 values using nonpadded comparison semantics.
This is important when comparing or joining on the columns having these datatypes;
SQL*Plus: Release 10.2.0.1.0 - Production on Pzt Au 6 09:16:45 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> conn hr/hr
Connected.
SQL> set serveroutput on
SQL> DECLARE
2 last_name1 VARCHAR2(10) := 'TONGUC';
3 last_name2 CHAR(10) := 'TONGUC';
4 BEGIN
5 IF last_name1 = last_name2 THEN
6 DBMS_OUTPUT.PUT_LINE ( '-' || last_name1 || '- is equal to -' || last_name2
|| '-');
7 ELSE
8 DBMS_OUTPUT.PUT_LINE ( '-' || last_name1 || '- is NOT equal to -' || last_n
ame2 || '-');
9 END IF;
10 END;
11 /
-TONGUC- is NOT equal to -TONGUC -
PL/SQL procedure successfully completed.
SQL> DECLARE
2 last_name1 CHAR(6) := 'TONGUC';
3 last_name2 CHAR(10) := 'TONGUC';
4 BEGIN
5 IF last_name1 = last_name2 THEN
6 DBMS_OUTPUT.PUT_LINE ( '-' || last_name1 || '- is equal to -' || last_name2
|| '-');
7 ELSE
8 DBMS_OUTPUT.PUT_LINE ( '-' || last_name1 || '- is NOT equal to -' || last_n
ame2 || '-');
9 END IF;
10 END;
11 /
-TONGUC- is equal to -TONGUC -
PL/SQL procedure successfully completed.
Also you may want to read related asktom thread - "Char Vs Varchar" http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1542606219593
and http://tahitiviews.blogspot.com/2007/05/less-is-more-more-or-less.html
Best regards.

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Hi,
Could anyone tell the difference Between Static and Dynamic Credit Check?
According to website: http://www.sap-basis-abap.com/sd/difference-between-static-and-dynamic-credit-check.htm ... this is the answer:
====================
Simple Credit Check : Tr.Code - FD32
It Considers the Doc.Value + Open Items.
Doc.Value : Sales Order Has been saved but not delivered
Open Item : Sales Order has been saved , Delivered, Billed & Transfered to FI, but not received the payment from the customer.
Static Credit Check it checks all these doc value & check with the credit limit
1) Open Doc.Value / Sales Order Value : Which is save but not delievered
2) Open Delivery Doc.Value : Which is delivered but not billed
3) Open Billing Doc.Value : Which is billed but not posted to FI
4) Open Item : Which is transfered to FI but not received from the customer.
Dynamic Credit Check         1) Open Doc
                                            2) Open Delivery
                                            3) Open Billing
                                            4) Open Items
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Here the System will not consider the above 1, 2, 3 & 4 values for the lost 3 months.
====================
Question 1: Could you further explain the above information, if there is any?
Question 2:: What is the Tcode to customize settings of:
a) Simple Credit Check (isn't this same with b) below?)
b) Static Credit Check
c) Dynamic Credit Check

Hi Tanish,
Diff between Static and Dynamic Filters.
Example One at report Level.
Create a variable for a Infoobject say ,Material .
1)In the Query Designer and if u restrict it to some 10 materials at query level, the report will display for only those 10 materials only.This is Static Filter.UR AHrdcoding it to those materials.You cant change them at Query Run time.i.e not changeable by user.
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Example Two at DTP and Start Routine Level,say Document Type.
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2)f u give filters in DTP it is Dyanamic as u can change it in Production.U can give any doc type,Changeable by user at run time.
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Rgds
SVU

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Hi,
what is the difference between invoice and a debit note.
If I underinvoice a customer, should I raise a additional invoice for the difference or shud i raise a debit note. if i need to raise debit note, then why not invoice or if i need to raise an invoice, then why not a debit note
regards
sachin

Debit note is generally used to issue an invoice for already sold goods w/o physical goods movement involved.
If raw material prices increases which are utilized in production of Finished goods. then the business will submit the relevant documents as proof at customer.
Once Customer is accepted, then price increase effective date will be finalized , Then business issues debit note request for the required material & its converted into debit note. ( all this will be done, based on agreement with the Customer). Generally this scenario is most widely used in Manufacturing / Automobile industry.
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What's the difference between "overloading" and "overriding" in Java

hashdata wrote:
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Hi All,
Can anybody explain differences between isu and sapr3
Thanks,
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Hi Satya ,
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Rgds
SVU123

Difference between volatile and atomic variables (util.concurrent.atomic)

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