Question about dml statement processing

Hi,
If we have a tabular block (with multiple records displayed), and initially the corresponding table does not contain any records, and we start the form then enter two records and we issue Ctrl+S (commit), then when the commit is issued? At the end (so two records commited once), or after every insert?
Same question If we issue a new insert, and we update another record. So first the record is inserted, then the update is made, and at the end commit?
Thanks.

Hello,
The commit is done when every database events are applied (insert, update, delete).
Francois

Similar Messages

I have question about dml mechanism. particularly delete statement

HI,
I have question about dml mechanism. particularly delete statement
I learned that SQL statements deal with each row. For example, SELECT statement insert each record(1 row) which matched with term of WHERE into record pool.
Also I find that UPDATE, INSERT statement insert each record into memory and if that is commited, I/O is generated with disk.
if so, Do DELETE statements deal with each row which is matched with terms WHERE statements? ortherwise with rownum?
I hope that I know the mechanism of DELETE statement?
If the content above which I mentioned is fault, plz point out.
Thank you for reading this contents.

Hi,
leave_for wrote:
HI,
I have question about dml mechanism. particularly delete statement
I learned that SQL statements deal with each row. I'm not sure what you mean.
SQL statements deal with sets of rows ; there may be 0, 1, 2, 3 or more rows in the set.
For example, SELECT statement insert each record(1 row) which matched with term of WHERE into record pool.You must mean an INSERT or MERGE statement that includes a query. A plain old SELECT statement doesn't insert anything, or change any table in any way.
Also I find that UPDATE, INSERT statement insert each record into memory and if that is commited, I/O is generated with disk.That's right. All DML involves some I/O. The I/O may be buffered, so that the DML statement might finish before any disk I/O is actually performed.
if so, Do DELETE statements deal with each row which is matched with terms WHERE statements? ortherwise with rownum?
I hope that I know the mechanism of DELETE statement?Sorry; the last couple of lines you wrote are especially confusing.
When you have a DELETE statement that includes a WHERE clause, such as
DELETE emp
WHERE deptno = 20;then the set of rows that will be deleted is the same set of rows for which the condition "deptno = 20" is TRUE. Again, that may be 1 row, but if it is, that's mere coincidence. The number of rows in the set may be 0, or it may be 2 or more.
If ROWNUM is part of the WHERE clause, then ROWNUM will be considered when Oracle decides which rows to delete; if ROWNUM is not part of the WHERE clause, then ROWNUM will play no part in determining which rows are deleted. Remember, as Damorgan mentioned above, ROWNUM is an arbitrary number. There is no built-in order to the rows in any table.

Question about sql batch process in java app

hi all
i have few questions about using batch process in the java.sql package. the addBatch method can take sql statements like inserts or updates. can we use a mixture of insert and update then? can we use prepared statement for this? it's just for performance consideration. thanks in advance.

hi all
i have few questions about using batch process in the
java.sql package. the addBatch method can take sql
statements like inserts or updates. addBatch() is a method that has no parameters. It doesn't 'add' sql statements.
can we use a
mixture of insert and update then? can we use
prepared statement for this? it's just for
performance consideration. thanks in advance.The point of batching is that you take something that is invariant and then 'add' a variant part.
Thus a single insert has an invariant part (the table and specific columns) and a variant part (the data for each row by column.)
You can use anything that is valid SQL (for jdbc, driver, database) and use it presuming your database allows that particular usage in batching. But that does require some regular pattern - it won't work if your usage is random. Nor will it work if some statements need to be executed only some of the time. Finally also note that transaction processing will often require smaller chunks - you can't insert a million rows in one batch.

Question about delete statement

I have question about delete statement...
i am performing some simple delete statement against one table..but its taking so long..How can we check whether particular delete statements actually deleting records or not..?

Is the associated select-statement returning rows or not?
If yes -> delete is deleting
If no -> delete is just using CPU-cycles
To tune the delete-statement, you have to tune the corresponding select-statement. To tune the select-statement, you want to read the thread When your query takes too long ...

Questions about the load processing of OpenSparc T1 Dcache

Hi,
I have some questions about OpenSparc T1 Dcache load processing.
During load processing, subsequent loads to the same address need to search the store buffer for a valid store to that address. If there is a CAM hit, data is sourced from the store buffer, not from the D-cache, and no load request will be sent to the L2.
What if there is no CAM hit. Would the load request be sent to L2? Or would Dcache be checked for the requested data?
If the load request would be sent to L2, what next? Would the Dcache be updated?
Thanks

Store buffer is checked for Read after Write (RAW) condition on loads. If there is full RAW - i.e. full data exists in the store buffer - then the data is bypassed and no D cache access happens.
If RAW is partial (e.g. word store followed by a double word load) then load is treated as a miss. Store is allowed to complete in L2 cache and then load instruction is completed.
For the miss in STB, D cache is accessed. If hit, data is fetched from D$. If miss, data is fetched from L2$ and allocated in D$.

Question about 'write' statement

Hi,
A question on write statement.
I have a internal table itab which has field var. I am looping at this itab and writing horizontal heading output like below.
example on the output heading:
(3 spaces) itab-var (20 spaces) itab-var (20 spaces) itab-var.
the coding is:
loop at itab.
write: 3 itab-var.
endloop.
I want to increase the space by 20 for every loop. How to increase this 3 by 20? Can we accomplish this way?
Thank you for your time.

hi krishen,
just add 20 inside the loop , so that after every loop its value increases by 20
for example:
data: v type i.
v=3.
do 3 times.
write: at v(20).
v=v+20.
end do.
hope it will help you
regards
Rahul sharma
Edited by: RAHUL SHARMA on Sep 4, 2008 7:47 AM

Question about how XI process files in FTP

Hi experts,
I have a file-FTP to JDBC scenario.
XI scans a folder every minute to see if any file has appear.
My question is, does XI process the files in their order of creation, or randomly ?
If not, is there a way to make XI process them in order of creation ?
Thanks a lot, any help would be appreciated.
Kind regards,
Jamal

Hi,
from SAP Help:
If you select files from an FTP server and not from the file system, you need to make the following additional specifications:
○       ftp.host=<ftp-server>
The host name or IP address of the FTP server. If this specification is made, it is assumed that you are accessing an FTP server. The specifications file.sourceDir and file.sourceFileName then refer to the FTP server. The following are then not possible specifications:
■       setAttribute for parameter file.processingMode.
■       byDate for parameter file.processingOrder.
Regards
Patrick

A question about the Installation process in general

Hey guys, a general question to the installation process.
The following scenario:
I install a programme on my macbook pro and don't tick all possible installation options (like additional content).
Afterwards I change my mind and want to install the optional content.
So I run the installation programme again and now the question:
If I install the additional content AND the mainprogramme again is the main programme going to be overwritten or am I going to have the mainprogramme twice on my system from now on
Thanks in advance for you help, folks!

If you do a Unicode conversion (no matter in a UC & CU scenario or as a single project) the target system must be empty - means, you will create a new database and load it with the content you exported.
You can't install the export into your already existing database with the same name.
Markus

A question about CPS (CPS processing) and CAPolicy.inf file.

Hello All
Can someone please help me with the following question.
Background, I am building a 3-tier PKI infrastructure. offline Root, offline Policy (intermediate), online issuing.
Now my first question is about CPS (certificate practice statement) for this example lets just call this the InternalIssuancePolicy as below.
Basically I was thinking it is best not to set a given certificate (aka issuance) policy at the Root, the reason being I may wish to have different issuance policies at a latter date.
For example right now I just want an issuance policy (CPS) for internal certificates only, therefore I am thinking set this at the Policy CA level, as below [InternalIssuancePolicy] (example OID) and then issuing CA certs from this Policy CA to the
internal issuing CAs. If at a latter date I want a different policy (CPS) for issuance of external certificates I can build a new Policy CA under the existing Root with a different policy extension.
Is the above logic sound?
Questions:
I am assuming from recent study that the CA cert issued to the Issuing CA will contain a single issuance policy "only" i.e. the one that was specified in the Policy CA 1.3.6.1.4.11111111.1.1.1. If so I believe you cannot build a new
issuing CA and submit the CSR to the Policy CA asking for a CA cert with any other certificate policy extension other than 1.3.6.1.4.11111111.1.1.1
Is that correct?
Also
I saw a blog post which stated if are going to use certificate/issuance policies (other than all issuance policies) you should mark the extension as critical=true otherwise the policy just becomes glorified comment. I take the point but that leads me to
two more questions
1: How does the certificate changing engine or CryptoAPI enforce a certificate policy (as it is just a policy, e.g. written procedure). I am assuming all this means is it forces the client to process the extension and therefore check the certificate
policy extension in the certificate does not violate the certificate chain but that is all it can do?
2: If the certificate policy extension is set to critical and the URL referenced in the extension is not available (e.g. on a WEB Server and the client is working offline, but has a cached CRL), does setting the extension to critical also force the
client to try and access the URL listed, or not (I am assuming not as you could just have a text block rather than URL).
Any comments suggestions on my proposed three CAPolicy.inf files below for the 3-tier PKI (again offline Root and Policy)
** Root **
[Version]
Signature= "$Windows NT$"
[Certsrv_Server]
RenewalKeyLength=4096
RenewalValidityPeriodUnits=Years
RenewalValidityPeriod=20
CRLPeriod=Years
CRLPeriodUnits=1
LoadDefaultTemplates=False
AlternateSignatureAlgorithm=0
[CRLDistributionPoint]
[AuthorityInformationAccess]
basicconstraintsextension]
pathlength = 2
critical=true
PolicyStatementExtension]
Policies = AllIssuancePolicy
Critical = FALSE
[AllIssuancePolicy]
OID = 2.5.29.32.0
** Policy CA **
[Version]
Signature= "$Windows NT$"
[Certsrv_Server]
RenewalKeyLength=2048
RenewalValidityPeriodUnits=Years
RenewalValidityPeriod=10
CRLPeriod=Years
CRLPeriodUnits=1
[PolicyStatementExtension]
Policies = InternalIssuancePolicy
Critical = False
[InternalIssuancePolicy]
OID = 1.3.6.1.4.11111111.1.1.1
Notice = "Internal Certificate Policy"
URL="http://pki.lab.local/Certenroll/CPS.txt"
[AuthorityInformationAccess]
URL=http://pki.lab.local/Certenroll/PolicyCA01.crt
[CRLDistributionPoint]
URL=http://pki.lab.local/Certenroll/PolicyCA01.crl
[basicconstraintsextension]
pathlength = 1
critical=true
** Issuing CA **
[Version]
Signature= "$Windows NT$"
[Certsrv_Server]
RenewalKeyLength=2048
RenewalValidityPeriodUnits=Years
RenewalValidityPeriod=5
CRLPeriod=Weeks
CRLPeriodUnits=1
CRLDeltaPeriod=Days
CRLDeltaPeriodUnits=1
LoadDefaultTemplates=False
AlternateSignatureAlgorithm=0
[AuthorityInformationAccess]
URL=http://pki.lab.local/Certenroll/IssuingCA01.crt
[CRLDistributionPoint]
URL=http://pki.lab.local/Certenroll/IssuingCA01.crl
[basicconstraintsextension]
pathlength = 0
critical=true
Thanks All
AAnotherUser__

> Is the above logic sound?
not that much. In this case 3-tier PKI could be reduced to 2-tier. Make default Offline Root CA and below it issuing CAs with desired policy OIDs. You will combine issuing CA with policy CA functionality. Additional tier will cost you a license, administration
overhead and increased certificate chain processing delays. There is nothing wrong if you combine policy CAs with issuing.
> I saw a blog post which stated if are going to use certificate/issuance policies (other than all issuance policies) you should mark the extension as critical=true
where did you get this? Certificate policies should not be marked critical. Certificate chaining engine will take care of it, when application reqests CCE to validate desired policy.
> does setting the extension to critical also force the client to try and access the URL listed
no. Certificate chaining engine do not inspect policy qualifier URLs.
> Any comments suggestions on my proposed three CAPolicy.inf files below for the 3-tier PKI (again offline Root and Policy)
[CRLDistributionPoint]
[AuthorityInformationAccess]
[PolicyStatementExtension]
Policies = AllIssuancePolicy
Critical = FALSE
[AllIssuancePolicy]
OID = 2.5.29.32.0
these sections are not required in root CA.
[AuthorityInformationAccess]
URL=http://pki.lab.local/Certenroll/PolicyCA01.crt
[CRLDistributionPoint]
URL=http://pki.lab.local/Certenroll/PolicyCA01.crl
[basicconstraintsextension]
pathlength = 1
critical=true
These sections are not required at policy CA. Afaik, CDP and AIA extensions are not supported in non-root CA configuration files. The same is with issuing CA. And your issuing CA is missing PolicyStatementExtension section.
Vadims Podāns, aka PowerShell CryptoGuy
My weblog: en-us.sysadmins.lv
PowerShell PKI Module: pspki.codeplex.com
PowerShell Cmdlet Help Editor pscmdlethelpeditor.codeplex.com
Check out new: SSL Certificate Verifier
Check out new:
PowerShell File Checksum Integrity Verifier tool.

HCM Processes & Forms - Some questions about the PD Processes

Hi Experts,
At my Organisation we use HCM Processes and Forms and Organisation Management and MSS to manage Position Based Security (PBS).
The MSS Managers have requested a form be developed which they can use to extend an existing Position to Employee temporary assignment (IT1001 S-P with A081 relationship) which is due to expire within the next 30 days. We recently upgraded to ECC EHP6 and I thought I would now have a go at developing this Form.
While researching in SCN and SAP Press books on the ‘HCM Processes and Forms’ topic, I have discovered a lot of information that has assisted me so far in progressing this solution.
There are a few givens that I have confirmed so far, which are as follows;
Since we are using Positions (Organisation Management), the only option available here is to use the PD Process, which implies using the SAP_PD Back_End Service. Therefore this become the baseline to build upon.
While researching in SCN and SAP Press books on this subject I could not find relevant information about what is possible using the SAP_PD Service to achieve my solution design for the above requirements and thus my post to the HCM P&F Community for assistance.
My questions are as follows;
In the solution design, I was considering to use the “Process without Start Object” or “Mass Start” to skip Step 1 - “Selection Object” and use a Generic Service to get all the positions for the Manager (along the lines of the SAP Standard Generic Service - find Positions in Manager’s area of Responsibility) and only retain the Positions where the End Date for the IT1001 A081 relationship in between the Effective Date and Effective Date plus 30 days. This should provide me with all the positions under the Manager that have the A081 relationship with the assigned employee that are about to expire within the next 30 days.
I want the result presented on the Form in a Table format so that the Manager has to enter the Extension Start Date and End Date for the new assignment period.
Is this possible using Standard Design Time functionality?
2.      Or Instead of Question 1, could I use OADP to achieve the same result using a custom search class to return a list of multiple objects (Positions)which is used to populate the form?
3.       I get the impression that the ‘Mass Start’ process is mainly for multiple employees. Can it also be used for multiple PD objects?
4.       I get the impression that if I used the ‘Mass Start’ option I could only use this if I was CREATING a new object or assignment? (I take it that you cannot use the Mass Start option to CHANGE multiple existing objects. Only because I have not seen any SAP Standard examples of this yet!)   Please confirm if this is possible?
5.       Has anyone used the “Query for Mass Start” option on a Process? How does that work? (Could I write a ‘SAP Query’ to get the positions I am interested in under the Manager?) Is there a sample SAP Standard process that uses a query?
Your assistance would be greatly appreciated.
Thanks in Advance.
Regards,
Steve

no limit
no limit
limitations of what?
you can use forms on mac, pc, and other systems

A simple question about the Integration process and the PI system

Hi all
Out PI system gets more and more slowly .
in the Monitor I can se that there are many ufinished IP about 100.
in the Outbound colon there is a Watch icon with the message
QMessage being sent
and in the graphic of the IP thers is a Send Message Asynchronously with text in process.
my question is can those unfineshed IP be guilty in slowing down the system by taking resources, they have been there for quit a long time .
Thanks

Hi again
I have checked sm12 , no locks
theres is no mapping involved in this step , the IP is trying to send a file to server.
I just want to know if 100 unfinished IP slow down the system .
It does not matter if the file has been sent or not
is there any way to check those IP if they are taking resources.
Thanks.

Beginner question about prepared statements...PLEASE help! :-)

First let me say thanks for the assistance. This is probably really easy to do, but I'm new to JSP and can't seem to figure it out.
I want to dynamically populate a table that shows whether a particular person has an appointment at a given date and time with a user. To do this, I want to query the MySQL database for the lastname of the person with the appointment that occurs with the user at the year, month, date, and time, in question.
THE CODE BELOW DOESN'T WORK (obviously) BUT SOMEWHAT ILLUSTRATES WHAT I'M TRYING TO ACCOMPLISH:
<%
Driver DriverTestRecordSet = (Driver)Class.forName(MM_website_DRIVER).newInstance();
Connection ConnTestRecordSet = DriverManager.getConnection(MM_website_STRING,MM_website_USERNAME,MM_website_PASSWORD);
PreparedStatement StatementTestRecordSet = ConnTestRecordSet.prepareStatement("SELECT lastname FROM appts_pid1 WHERE user_id='<%=(((Recordset1_data = Recordset1.getObject(user_id))==null || Recordset1.wasNull())?"":Recordset1_data)%>' AND year='<%= yy %>' AND month='<%= months[mm] %>' AND date='<%= dates[dd] %>' AND appttime='16:15:00'");
ResultSet TestRecordSet = StatementTestRecordSet.executeQuery();
boolean TestRecordSet_isEmpty = !TestRecordSet.next();
boolean TestRecordSet_hasData = !TestRecordSet_isEmpty;
Object TestRecordSet_data;
int TestRecordSet_numRows = 0;
%>
The real problem comes in the prepared statement portion. If I build the prepared statement with static values like below, EVERYTHING WORKS GREAT:
PreparedStatement StatementTestRecordSet = ConnTestRecordSet.prepareStatement("SELECT lastname FROM appts_pid1 WHERE user_id='1' AND year='2002' AND month='October' AND date='31' AND appttime='16:15:00'");
But when I try to use dynamic values, everything falls apart. It's not that the values aren't defined, I use the user_id, year <%= yy %>, month <%= months[mm] %>, etc. elsewhere on the page with no problems. It's just that I can't figure out how to use these dynamic values within the prepared statement.
Thanks for reading this far and thanks in advance for the help!!!!

Hi PhineasGage
You are little bit wrong in your
your preparedStatement.
Expression tag within scriptlet tag is invalid.
Whenever you are appending the statement with
expression tag, append it with "+" and remove
expression tag.
Hopefully it will work
ThanksThanks for the response!
I know that the expression tag within scriptlet tag is invalid. I just need a workaround for what I want to do.
I'm unclear what you mean by "Whenever you are appending the statement with expression tag, append it with a "+" and remove expression tag".
Could you give an example?
In the meantime, I've been trying to digest the docs on prepared statements and have changed the code to look like:
PreparedStatement StatementTestRecordSet = ConnTestRecordSet.prepareStatement("SELECT lastname FROM appts_pid1 WHERE user_id= ? AND year= ? AND month= ? AND date= ? AND appttime='13:15:00'");
StatementTestRecordSet.setInt(1,1);
StatementTestRecordSet.setInt(2,2002);
StatementTestRecordSet.setString(3,"October");
StatementTestRecordSet.setInt(4,31);
Again, WITH THE STATIC VALUES, THIS WORKS FINE...but when I try to use expressions or variables like below, things don't work:
StatementTestRecordSet.setInt(2,<%= yy %>);
Obviously, I'm doing something wrong, but there has to be a way to use variables within the prepared statement.
ALSO, the values are being passed to this page via URL in the form:
samplepage?user_id=1&year=2002&month=October&date=31
Based upon this information, is there another way (outside of stored procedures in the db) to do what I want to do? I'm open to ideas.

A question About SUBMIT statement

Hi,
By SUBMIT statement, i can trigger another report. If the called report runs into dump, how can i detech/catch the dump in the calling report? I tested. It seems impossible to catch the dump. The calling report will also dump.
My question is, if the called report runs into dump, how to detect the dump and avoid dump in calling report?
Thanks in advance,
Best Regards, Johnney.

hi
you can catch this kind of error or exeption from the respective report
then pass this error or exeception to the calling report
go through the example I am giving , ti have done it like this only
SUBMIT zgurep03 AND RETURN WITH SELECTION-TABLE li_seltab .
then in the called reprot
*Check ledger
SELECT SINGLE * FROM t881 WHERE rldnr = p_rldnr.
IF sy-subrc NE 0.
    SET CURSOR FIELD 'P_RLDNR'.
     MESSAGE e448 WITH p_rldnr
      MESSAGE e446 INTO lv_text .
      lv_type = 'E'.
Capturing the error messages.
EXPORT lv_text TO MEMORY ID 'TX'(004).
EXPORT lv_type TO MEMORY ID 'TP'(005).
in calling report
IMPORT gv_type1 TO gv_type FROM MEMORY ID 'TP'.
IMPORT gv_text1 TO gv_text FROM MEMORY ID 'TX'.
preparing error message in the callge report for the calling report
PERFORM prepare_message
        USING sy-msgid
              lv_msgno
              lv_msgv1
              lv_msgv2
              lv_msgv3
              lv_msgv4
        CHANGING gv_text.
preparing error message
FORM prepare_message USING    p_sy_msgid
                               p_sy_msgno
                               p_sy_msgv1
                               p_sy_msgv2
                               p_sy_msgv3
                               p_sy_msgv4
                      CHANGING p_gv_text.
CALL FUNCTION 'FORMAT_MESSAGE'
    EXPORTING
      id        = p_sy_msgid
      lang      = 'EN'
      no        = p_sy_msgno
      v1        = p_sy_msgv1
      v2        = p_sy_msgv2
      v3        = p_sy_msgv3
      v4        = p_sy_msgv4
    IMPORTING
      msg       = gv_text
    EXCEPTIONS
      not_found = 1
      OTHERS    = 2.
IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
I guess this will solve your problem
Regards
Prashant

Question about network statement in OSPF and BGP

The network statements in OSPF and BGP can be used to advertise networks. But I'm not clear under what circumstances would make more sense to use network statements to advertise a network than by using other methods to have the network learned by other routers.
Here is an example: assume I'm running BGP on router A. I want to advertise network 10.1.1.0/24 to other BGP peers. I have a OSPF route for this network. I can do 2 things: one is to use "network 10.1.1.0 mask 255.255.255.0", the other is to do "redistribute OSPF ... route-map OSPF-INTO-BGP", and create a prefix list to permit 10.1.1.0/24.
Both would work to have this network learned by other BGP peers. But which is better for what purpose?
Thanks a lot
Gary

Hi Gary,
There is one little difference between the use of the two approaches - the route injected into BGP by using a network statement will carry an Origin attribute of IGP, whereas the route injected using redistribution will have an Origin attribute of Incomplete. Now, that is not a huge issue since you can always change that whatever value you desire both with the use of the network statement and redistribution. The important thing, however, is that in the BGP best path selection process, the Origin attribute comparison is fairly high up and will prefer a route with the attribute of IGP.
Apart from that, there is absolutely no difference between using the network statement and using redistribution with a route-map that matches exactly on the same route that you would have specified with the network statement.
I guess one advantage of using the redistribute approach is that it does not clutter up the BGP config. If you wish to add more routes, you simply add them to the prefix list so that you don't really touch the BGP config portion at all..
Hope that helps - pls do remember to rate posts that help.
Paresh

Question about call statement in trigger

I faced a question in written exam.
A CALL statement inside a trigger allow us to call
a)package
b)procedure
c)function
d)another trigger
Can anyone give me answer with reason?
I used CALL statement inside trigger but not allowing to use it. Might be earlier in oracle CALL statement we can use..its only a guess so I am asking in forum..
plz guide me..
rgds,
pc

You can use CALL in a trigger without resorting to EXECUTE IMMEDIATE
SQL> create table t1 (
2    col1 number
3 );
Table created.
SQL> create procedure t1_proc
2 as
3 begin
4    dbms_output.put_line( 'In T1_PROC' );
5 end;
6 /
Procedure created.
SQL> ed
Wrote file afiedt.buf
1 create trigger trg_t1
2    before insert on t1
3    for each row
4* call t1_proc
5 /
Trigger created.
SQL> set serveroutput on;
SQL> insert into t1 values( 1 );
In T1_PROC
1 row created.I can't think of any reason that you'd actually intentionally structure your code this way in this day and age because it would be rather likely to cause confusion for whoever had to support this in the future. But it is valid syntax that probably made sense back in Oracle 5.
Justin

Question about dml statement processing

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