Insert/select one million rows at a time from source to target table

Hi,
Oracle 10.2.0.4.0
I am trying to insert around 10 million rows into table target from source as follows:
INSERT /*+ APPEND NOLOGGING */ INTO target
SELECT *
FROM source f
WHERE
NOT EXISTS(SELECT 1 from target m WHERE f.col1 = m.col2 and f.col2 = m.col2);There is a unique index on target table on col1,col2
I was having issues with undo and now I am getting the follwing error with temp space
ORA-01652: unable to extend temp segment by 64 in tablespace TEMPI believce it would be easier if I did bulk insert one million rows at a time and commit.
I appriciate any advice on this please.
Thanks,
Ashok

902986 wrote:
NOT EXISTS(SELECT 1 from target m WHERE f.col1 = m.col2 and f.col2 = m.col2);
I don't know if it has any bearing on the case, but is that WHERE clause on purpose or a typo? Should it be:
NOT EXISTS(SELECT 1 from target m WHERE f.col1 = m.COL1 and f.col2 = m.col2);Anyway - how much of your data already exists in target compared to source?
Do you have 10 million in source and very few in target, so most of source will be inserted into target?
Or do you have 9 million already in target, so most of source will be filtered away and only few records inserted?
And what is the explain plan for your statement?
INSERT /*+ APPEND NOLOGGING */ INTO target
SELECT *
FROM source f
WHERE
NOT EXISTS(SELECT 1 from target m WHERE f.col1 = m.col2 and f.col2 = m.col2);As your error has to do with TEMP, your statement might possibly try to do a lot of work in temp to materialize the resultset or parts of it to maybe use in a hash join before inserting.
So perhaps you can work towards an explain plan that allows the database to do the inserts "along the way" rather than calculate the whole thing in temp first.
That probably will go much slower (for example using nested loops for each row to check the exists), but that's a tradeoff - if you can't have sufficient TEMP then you may have to optimize for less usage of that resource at the expense of another resource ;-)
Alternatively ask your DBA to allocate more room in TEMP tablespace. Or have the DBA check if there are other sessions using a lot of TEMP in which case maybe you just have to make sure your session is the only one using lots of TEMP at the time you execute.

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82* end;
SQL> /
PL/SQL procedure successfully completed.
SQL> select count(*) from customer;
COUNT(*)
16

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MyBlog
Twitter

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Barry

How to play one specific album at a time from the Artist tab.

In regards to 5th gen iPod Touches: I'm wondering if I can play just one album at a time (not all the songs by an artist) via the Artist tab. The only way I have found to do this is Artist>Click on a song in the album I want to listen to (At this point, ALL songs from the artist will be selected for playing)>Click on the album's song listing on the top right>click on another song in the album. This is very inconvenient and was not at all like this on my older iPod Touch. Any help would be great!

Is the MQ Queue local or remote?

How to Get One MQ Message at a time from MQ Queue

Hi,
Before posting my query here is the configuration I am using:_
Weblogic Server 10.3.3
Soa Server 11.1.1.3.0
Oracle JDeveloper 11.1.1.3.0
Till now I have done the following things:_
1) created an MQ Queue
2) Producing MQ Messages in the Queue with the help of an Asynchronous BPEL process.
I can see the message put in the Queue:
What is my requirement?_
1) I want to read (Get) only one of the above created MQ Messages in the main BPEL process(Synchronous), then needs to process it
And based on my Business condition I have to write that message in the Database.
After successful completion of this instance only my main process should go to consume the next message in the MQ queue.
What is the problem I am facing?_
1) The main BPEL process is not reading one message at a time. I.e. if there are 10 messages in the queue, then as soon as the main bpel process gets deployed, 10 instances created automatically, all in running status and Queue gets empty
2) And if I explicitly test the process, the processes always go in running mode. I.e. Waiting for the messages at the receive activity (this receive is attached to the MQ adapter through operation Get in the main BPEl process)
I just want to know how I can read the MQ messages one by one, though there may be n number of messages in the MQ queue
And only after the completion of the first instance (of Reading First MQ message from queue) it would go to initiate the next instance and so on
Would anyone please help me in this issue?
Thanks
Sunil

Is the MQ Queue local or remote?

Refresh select one choice executing an action binding from ViewObjectImpl

Hello,
I'm using Oracle JDeveloper 11g Release 2 (11.1.2.3.0).
I have a jspx page with a panel tabbed with 2 tabs. In the first one, I have a SelectOneChoice and a button. This command button executes a method in a ViewObjectImpl to add items on a table.
Here the code of the button:
<af:commandButton actionListener="#{bindings.addCarToStock.execute}"
                                                      text="Add to Stock"
                                                      disabled="#{!bindings.addCarToStock.enabled}" id="cb2"/>
On the other tab, I have a form with another SelectOneChoice, in this SOC, you have to choice an item added in the other tab. But when I add a new item in the first tab, the new item does not appear in the SOC of the second tab.
This would be solved if I execute an action binding on the VOIterator of the second tab, but I can do it from the method on the ViewObjectImpl.
Can someone help me?
Thanks in advance!

Hi Timo,
I've done what you tell me and still don't work.
In tab2, I have a form with some attributtes of a VO. One of them it's a SOC (the one that I want to refresh), that takes the values from a LOV. I try to execute the method of the iterator of the LOV first, and after execute the method of the iterator of the VO, but nothing works.
Here the code in the bean:
public void addCarToStockActionListener (ActionEvent actionEvent){
        BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
        OperationBinding method = bindings.getOperationBinding("addCarToStock");
        if (method == null) {
            System.out.println("Method Not Found");
        method.execute();
        List errors = method.getErrors();
        if (!errors.isEmpty()) {
            System.out.println("Error");
        OperationBinding executeCarSalesLOVIteratorMethod = bindings.getOperationBinding("ExecuteCarSalesLOVIterator");
        if (executeCarSalesLOVIteratorMethod == null) {
            System.out.println("Method Not Found");
        executeCarSalesLOVIteratorMethod.execute();
        List errors2 = executeCarSalesLOVIteratorMethod.getErrors();
        if (!errors2.isEmpty()) {
            System.out.println("Error");
        OperationBinding executeSalesVOIteratorMethod = bindings.getOperationBinding("ExecuteSalesVOIterator");
        if (executeSalesVOIteratorMethod == null) {
            System.out.println("Method Not Found");
        executeSalesVOIteratorMethod.execute();
        List errors3 = executeSalesVOIteratorMethod.getErrors();
        if (!errors3.isEmpty()) {
            System.out.println("Error");
And here the code of the form in tab2 (with the SOC I want to update):
<af:panelFormLayout id="pfl1">
     <af:selectOneChoice value="#{bindings.SaleCarId.inputValue}"
          label="Model"
          required="#{bindings.SaleCarId.hints.mandatory}"
          shortDesc="#{bindings.SaleCarId.hints.tooltip}" id="soc3"
          partialTriggers="cb12">
     <f:selectItems value="#{bindings.SaleCarId.items}" id="si3"/>
     </af:selectOneChoice>
     <af:toolbar id="t5">
          <af:commandButton actionListener="#{bindings.CreateInsert1.execute}"
               text="New Sale"
               disabled="#{!bindings.CreateInsert1.enabled}" id="cb3"/>
          <af:commandButton text="Save New Sale" id="cb6"
               actionListener="#{salesBean.commitActionListener}"/>
     </af:toolbar>
</af:panelFormLayout>

Selecting only one row at a time

Hi experts,
i have following doubt regarding selecting rows from a db:
Is there any way of selecting only one row AT A TIME from a dabase just to collect the data in rows instead of in a unique document containing all the rows?
I would like you to ellaborate on this as i need to send only one row to the IE, and then other row, and so on... without throwing any error!
I have seen that there are SELECT SINGLE and SELECT UP TO 1 ROW, but these two methods are only useful when retrieving only one row, and that does not match my requirements. I need to process all the rows but one by one..
I know that we can use the receiver jdbc adapter as if it was a sender by means of its specific datatype, but how to do it row by row??
Hope i had explained well..
Thanks in advance and best regards,
David

Hi kiran,
Yes, my table has 5 not null fields but i am selecting and updating fixes values so i think that I will definetely go for the next solution:
SELECT * FROM t1 WHERE status='0' and ROWNUM<2;
UPDATE t1 SET status='1' WHERE status='0' and ROWNUM<2;
My only concern is if the update will take the same row that the select.... BTW, I think it will
..What do you guys think?
I ve been trying to operate with your proposed queries but i received some errors. Your queries are very interesting but i think that with the above ones i meet my requirements as the status field will be 0 for not processed rows and 1 for precessed ones (and the update will look for the row that meets the same 'where' clause than the select, and then, and only then, it will set status='1').
The only thing i have to care about is what i questioned before.
Thanks a lot and best regards,
David

Insert/select one million rows at a time from source to target table

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