Deadlock issue in while inserting in oracle table.

I have written a procedure which copy data in to oracle tables.Other user can also start inserting in that table so to prevent these intervention.
i have applied locks on these two tables and assume that my procedure will wait for other users to finish and it will apply lock on the tables and other users will now wait till this procedure finishes.
My Procedure looks like:--
lock table table1 in exclusive mode;
lock table table2 in exclusive mode;
update table1 set where rownum < x;
forall .....insert in table 2.
commit;
EXCEPTION
WHEN OTHERS THEN
dbms_printline(SQLERRM)
commit;
END;
But my problem is i am still receiving oracle error as below and the above procedure fails in between:-
ORA-00060: deadlock detected while waiting for resource
Any hint ??
Can we get this error if i execute a SELECT statement on some table which is not locked by me and some other other is updating/deletig/inserting in that table ?
*Select statement is without update clause.

user620101 wrote:
I have written a procedure which copy data in to oracle tables.Other user can also start inserting in that table so to prevent these intervention.
i have applied locks on these two tables and assume that my procedure will wait for other users to finish and it will apply lock on the tables and other users will now wait till this procedure finishes.
My Procedure looks like:--
lock table table1 in exclusive mode;
lock table table2 in exclusive mode;
update table1 set where rownum < x;
forall .....insert in table 2.
commit;
EXCEPTION
WHEN OTHERS THEN
dbms_printline(SQLERRM)
commit;
END;
But my problem is i am still receiving oracle error as below and the above procedure fails in between:-
ORA-00060: deadlock detected while waiting for resource
Any hint ??But if you successfully lock TABLE1 (in session #1) and another session (session #2) is holding a lock against TABLE2 (say it's currently updating a row) then session #1 has to wait when you issue the Lock table command for table2. So session #1 is waiting, and then session #2 tries to do ANY modification to TABLE1 (which session #1 still has locked, and is still waiting to obtain the lock on TABLE2)... whamo, deadlock.
user620101 wrote:
Can we get this error if i execute a SELECT statement on some table which is not locked by me and some other other is updating/deletig/inserting in that table ?
*Select statement is without update clause.No, writes (and locks) do not block reads. So a simple select statement (unless you issued a FOR UPDATE clause) would not cause this issue.
What does your actual code look like, and what are you actually attempting to do? Why do you think you need to lock the tables, is this a one time operation, a continual operation of the system? Please explain in much more detail what you've got going on here.

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---------------------------------------Code--------------------------------------------------
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Ameya wrote:
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2 '/Header@orderID') ID
3 ,EXTRACTVALUE(c.COLUMN_VALUE,
4 '/Detail@lineNumber') lienum
5 ,EXTRACTVALUE(t.COLUMN_VALUE,
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7 ,EXTRACTVALUE(t.COLUMN_VALUE,
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9 FROM TABLE(XMLSEQUENCE(EXTRACT(XMLTYPE('- <Recordset>
10 - <Header dueDate="2007-01-17T16:09:05" orderDate="2004-01-17" orderID="0009" transactionID="1389"
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21 <Country>US</Country>
22 </PostalAddress>
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24 </Address>
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29 </SubTotal>
30 - <Tax>
31 <Money currency="USD">2.32</Money>
32 <Description />
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36 <Description />
37 </Shipping>
38 </Header>
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43 </UnitPrice>
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48 <Description />
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50 - <TaxAmount>
51 <Money currency="USD">1.68</Money>
52 </TaxAmount>
53 <TaxLocation>AZ</TaxLocation>
54 </TaxDetail>
55 </Tax>
56 </Detail>
57 - <Detail lineNumber="2" quantity="1">
58 - <ItemDetail>
59 - <UnitPrice>
60 <Money currency="USD">29.99</Money>
61 </UnitPrice>
62 <ShortName>Little;reg; pxxxx® Learning System</ShortName>
63 </ItemDetail>
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65 <Money currency="USD">1.68</Money>
66 <Description />
67 - <TaxDetail category="sales">
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72 </TaxDetail>
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76 <Description />
77 - <TaxDetail category="sales">
78 - <TaxAmount>
79 <Money currency="USD">0.68</Money>
80 </TaxAmount>
81 <TaxLocation>DISTRICT</TaxLocation>
82 </TaxDetail>
83 </Tax>
84 </Detail>
85 </Recordset>'),'/Recordset/Header'))) s
86 ,TABLE(XMLSEQUENCE(EXTRACT(c.COLUMN_VALUE,
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88 ,TABLE(XMLSEQUENCE(EXTRACT(t.COLUMN_VALUE,
89 '/Recordset/Detail/Tax'))) t
90 /
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<Header dueDate="2007-01-17T16:09:05" orderDate="2004-01-17" orderID="0009" transactionID="1389"
type="new">
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<Money currency="USD">32.49</Money>
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<Tax>
<Money currency="USD">2.32</Money>
<Description/>
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<Money currency="USD">8.95</Money>
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<UnitPrice>
<Money currency="USD">29.99</Money>
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<ShortName>Little;reg; pxxxx® Learning System </ShortName>
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<Money currency="USD">1.68</Money>
<Description/>
<TaxDetail category="sales">
<TaxAmount>
<Money currency="USD">1.68</Money>
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</Detail>
<Detail lineNumber="2" quantity="1">
<ItemDetail>
<UnitPrice>
<Money currency="USD">29.99</Money>
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<ShortName>Little;reg; pxxxx® Learning System </ShortName>
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<Tax>
<Money currency="USD">1.68</Money>
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<TaxDetail category="sales">
<TaxAmount>
<Money currency="USD">1.68</Money>
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<TaxLocation>AZ</TaxLocation>
</TaxDetail>
</Tax>
<Tax>
<Money currency="USD">0.68</Money>
<Description/>
<TaxDetail category="sales">
<TaxAmount>
<Money currency="USD">0.68</Money>
</TaxAmount>
<TaxLocation>DISTRICT</TaxLocation>
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</Detail>
</Recordset>
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<id>
<id1> 123</id1>
<fe>
<fe1>1</fe1>
<fe2>1</fe2>
</fe>
<a>
<fe1>a1</fe1>
<fe2>a2</fe2>
</a>
<newid>
<atr>
<atr1> 34</atr1>
<atr2> 76 </atr2>
</atr>
<pr>
<pr1> 34</pr1>
<pr2> 34</pr2>
</pr>
</newid>
</id >

Use XMLTABLE to convert the xml and INSERT ALL to do a multitable insert.
E.g.
http://odieweblog.wordpress.com/2012/05/10/how-to-load-xml-data-into-multiple-tables/
http://rwijk.blogspot.co.uk/2010/03/shredding-xml-into-multiple-tables-in.html

Avoiding duplicate records while inserting into the table

Hi
I tried the following insert statement , where i want to avoid the duplicate records while inserting itself
but giving me the errror like invalid identifier, though the column exists in the table
Please let me know Where i'm doing the mistake.
INSERT INTO t_map tm(sn_id,o_id,txt,typ,sn_time)
   SELECT 100,
          sk.obj_id,
          sk.key_txt,
          sk.obj_typ,
          sysdate,
          FROM S_KEY sk
    WHERE     sk.obj_typ = 'AY'
          AND SYSDATE BETWEEN sk.start_date AND sk.end_date
          AND sk.obj_id IN (100170,1001054)
           and   not exists (select 1
                                                               FROM t_map tm1 where tm1.O_ID=tm.o_id
                                                                    and tm1.sn_id=tm.sn_id
                                                                    and tm1.txt=tm.txt
                                                                    and tm1.typ=tm.typ
                                                                    and tm1.sn_time=tm.sn_time )

Then
you have to join the table with alias tml where is that ?do you want like this?
INSERT INTO t_map tm(sn_id,o_id,txt,typ,sn_time)
   SELECT 100,
          sk.obj_id,
          sk.key_txt,
          sk.obj_typ,
          sysdate,
          FROM S_KEY sk
    WHERE     sk.obj_typ = 'AY'
          AND SYSDATE BETWEEN sk.start_date AND sk.end_date
          AND sk.obj_id IN (100170,1001054)
           and   not exists (select 1
                                                               FROM t_map tm where sk.obj_ID=tm.o_id
                                                                    and 100=tm.sn_id
                                                                    and sk.key_txt=tm.txt
                                                                    and sk.obj_typ=tm.typ
                                                                    and sysdate=tm.sn_time )

Insert a oracle table from jquery/ajax

Hi.
i am new on apex and will like to know if can help me with my question.
i am calling an on demmand process from jquery javascript to insert some data on oracle apex_collection (i do delete and insert on the apex collection and works fine) , but i need to insert an oracle database table directly from jquery (through an on demmand process or any other way).
actually, i have an html page with an anonymus pl/sql which shows a list of items where user enter some values; using javascript, i call an on demmand - javascript process that will do the insert on an oracle table, but nothing happens. no data get inserted to my table
actually i am calling the on demmand process using this on javascript, and works nice, but only on apex_collection , not on oracle database table.
                          var ajaxRequest = new htmldb_Get(null,&APP_ID.,"APPLICATION_PROCESS=ADD_PRODUCTS",&APP_PAGE_ID.);
                          ajaxRequest.add('P1_PRODUCT_ID',html_GetElement('P1_PRODUCT_ID').value);
                          ajaxRequest.add('P1_QTY',html_GetElement('P1_QTY').value);
                          ajaxResult = ajaxRequest.get();
it is importante to mention that i am NOT SUBMITTING or refreshing the page at any time, because it will make it too slow, I think it has something to do with the problem but not sure.
thanks in advance.
Anthony.

Hi Scott. thanks for your interest.
ok, i am using Application Express 4.2.2.00.11 (Oracle Database SE 11gR2)
i have created a HTML region Source with this code to call the Ajax Process :
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Totalizar</title>
<script type="text/javascript">
$(function()
        // Save the Order
        $("#Save").click
            function()
                 var ajaxRequestd = new htmldb_Get(null,&APP_ID.,"APPLICATION_PROCESS=SAVE",&APP_PAGE_ID.);
                 ajaxRequestd.add('P1_CODIGO_CLIENTE',html_GetElement('P1_CODIGO_CLIENTE').value);
                 ajaxRequestd.add('P1_TIPO_CLIENTE',html_GetElement('P1_TIPO_CLIENTE').value);
                 ajaxResult = ajaxRequestd.get();
                 alert('Order Placed !');
</script>
</head>
<body>
<div id="totals"></div>
<p align="center" style="clear: both;">
<button type="button" style="font-weight: bold;background-color:lightgray;margin-left:auto;margin-right:auto;display:block;margin-top:0%;margin-bottom:0%" id="Save">Place Order</button>
</p>
</body>
</html>
the Message 'Order Placed !' is displayed on the page, so it tells me that the javascript is executing (i will like to display some message or alert inside the SAVE ajax process, to make sure it executes and check values at that moment, but don't know how)
and here is my "SAVE" on Demand process, with this settings:
      - Process Point - Run this process when request by ajax
      - Run Process - One per Page visit
whit this source code on it:
   -- Insert into table
    insert into cab_orders(customer_id, order_total, order_timestamp, user_name)
       values(:P1_CODIGO_CLIENTE, null, systimestamp, upper(:APP_USER));
    commit;
Remember that at this point the page has not been refresehed or submitted, maybe tis where the problem come from.
Thanks in advance for any tip !

How to read ecel sheet and insert into oracle table

hi all,
am working on forms builder 6i. and i want , from a trigger to read from a a sheet excel file the data and insert into a table that i had aleady created.
i whrite a code that can till now open the excel file but i cant read the data to insert it into the table.
am using TEXT_IO.IS_OPEN to open the file
TEXT_IO.GET_LINE to take each line
and subst(x as variable) to read the first line , but the subsrt return nohing
any solution??

There's already a topic made on this: how to copy data from excel to oracle forms

Incorrect data value when insert into oracle table

Would like to ask expert here, how could I insert data into oracle table where the value is 03 ? The case is like that, the column was defined as varchar2(50) data type, and I have a csv file where the value is 03 but when load into oracle table the value become 3 instead of 03.

user11432758 wrote:
Would like to ask expert here, how could I insert data into oracle table where the value is 03 ? The case is like that, the column was defined as varchar2(50) data type, and I have a csv file where the value is 03 but when load into oracle table the value become 3 instead of 03.
implicit datatype conversion to NUMBER can result in leading zero to be eliminated.
How do I ask a question on the forums?
https://forums.oracle.com/message/9362002#9362002

Deadlock issue in while inserting in oracle table.

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