Tree Table Selection after deletion

Hi,
We have a tree table where we are displaying hierarchy of information. We have a "Delete" operation. This operation is available in the context menu associated to each node. When user selects "Delete" operation, the selected row is deleted and the next node is automatically selected. We have implemented a selection listener on this table but when this automatic selection happens after deletion this event is not triggered. How do we trigger the selection event after deletion? We require the selection event because, we are keeping track of the selected nodes. Even for delete, we are identifying the item to be deleted from the list of tracked nodes. When this auto selection happens and the user clicks delete menu, the auto selected row it is not available in the tracked list as the selection listener is not fired for the auto selection.
Can any throw some light on how to address this?
thanks,

Hi,
what if - after deleting a node - you call for the selectedRowKeys on the tree to get the new selected row. This way you can update what otherwise the listener does.
Frank

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Table selection after deletion

Given that i have a Jtable with four rows. if that i deleted the last(4th) row, how can i set the next(3rd) row to be selected?
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http://www.magiksafe.com

Ansynchronous tree table selection listener in ADF ?

Hello,
We have a tree table in our jsff on which user can select and right click nodes.
The code in selectionListener takes a long time to execute. At the end it raises a contextual event which refreshes another part of the screen
User needs to wait for the selectionListener, and the ppr of another region of the screen before he can get the context menu on right click
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Expected Flow
Select Row
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Any pointers ?

How to reduce table size after deleting data in table

In one of the environment, we have 300 GB tabe which contains 50 columns. some of the columns are large object columns. This table contains data for the past one year and every month it is growing by 40 gb data. Due to this we have space issues. we would like to reduce the table size by keeping only recent two months data. What are the posiible ways to reduce the table size by keeping only 2 months data. Database version 10.2.04 on rhel 4.

kumar wrote:
Finally we dont have down time to do by exp/imp method.You have two problems to address:
<ul>
How you get from where you are now to where you want to be
Figuring out what you want to do when you get there so that you can stay there.
</ul>
Technically a simple strategy to "delete all data more than 64 days old" could be perfect - once you've got your table (and lob segments) down to the correct size for two months of data. If you've got the licencing and can use local indexing it might be even better to use (for example) daily partitioning by date.
To GET to the 2-month data set you need to do something big and nasty - this will probably give you the choice between blocking access for a while and getting the job done relatively quickly (e.g. CTAS) or leaving the system run slowly for a relatively long time while generating huge amounts of redo. (e.g. delete 10 months of data, then shrink / compact). You also have a choice between using NO extra space to get the job done (shrink/compact) or doing something which effectively copies the last two months of data.
Think about the side effects you're prepared to run with, then we can tell you which options might be most appropriate.
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Jonathan Lewis

Sending email after deleting the records in a table

Hi
I am deleting the records in a table. After deleting the records,
i want to send an email to another person. I am planning to follow this steps.
1. Create a trigger on the table(AFTER DELETE ON table FOR EACH ROW)
to copy the deleted records to temporary table.
2. Read the temporary table and send an email.
Is there any other way we can do with out creating temporary table ?.
Govind

I don't know what you plan to use to send the mail but here's a solution that would work.
-- Create a send mail procedure
create or replace procedure send_mail (
sender      IN VARCHAR2,
recipient   IN VARCHAR2,
message     IN VARCHAR2)
IS
mailhost VARCHAR2(30) := 'localhost';
mail_conn utl_smtp.connection;
BEGIN
mail_conn := utl_smtp.open_connection(mailhost, 25);
utl_smtp.helo(mail_conn, mailhost);
utl_smtp.mail(mail_conn, sender);
utl_smtp.rcpt(mail_conn, recipient);
utl_smtp.data(mail_conn, message);
utl_smtp.quit(mail_conn);
END;
/-- Create the trigger to email deleted rows
create or replace trigger email_del_rows
after delete on <table>
for each row
declare
msg varchar2(2000);
begin
msg := 'COL1 COL2 COMPANY NAME DATE'||chr(10);
msg := msg||:old.col1||'    '||:old.col2||'    '||:old.company_name||'       '||:old_date|| chr(10);
msg := msg||'END OF FILE';
send_mail('SENDER','[email protected]',msg);
end;
/You can make it look pretty but you get the basic idea.

Shrink Oracle Table after Deletion

A few database tables are very big. An Oracle table still holds the disk space occupied by deleted records according to http://stackoverflow.com/questions/6540546/oracle-10g-table-size-after-deletion-of-multiple-rows. Re: shrink table after delete teaches the following commands to release the idle space from the table.
ALTER TABLE TABLE1 DEALLOCATE UNUSED;
ALTER TABLE TABLE1 ENABLE ROW MOVEMENT;
ALTER TABLE TABLE1 SHRINK SPACE;
ALTER TABLE TABLE1 MOVE;
1. Are the commands feasible?
2. Are they safe?
3. What will be the impacts of running the commands?
4. Is there any other workable safe approach shrinking a table?

Hi,
I advise using shrink table operation.
The tablespace which belong to your table must be in ASSM (Automatic segment space management) to use shrink.
Shrink is safe but you need to run two commands :
1)ALTER TABLE TABLE1 SHRINK SPACE COMPACT; (This is long operation which moves data, but can be done online)
2)ALTER TABLE TABLE1 SHRINK SPACE; (this is quick if you run SHRINK SPACE COMPACT before, it only shift the High Water Mark. Be carreful if you don't run SHRINK SPACE COMPACT before your table will be locked for a long time)
Another point, is that execution plans are calculed using the HWM so SHRINK the table (The 2nd command) will invalidate all the cursors in shared pool where the table is in. So execution plan need to be recalculated (often not a problem).
Regards,

TABLE SIZE NOT DECREASING AFTER DELETION. BLOCKS NOT BEING RE-USED

Hi ,
Problem:
Table size before deletion: 40GB
Total rows before deletion: over 200000
Rows deleted=190000 rows
Table size after deletion is more (as new data was inserted meanwhile).
Purpose of table:
This table is a sort of transaction table.
Whenever an SR is raised by CSR, data gets inserted into this table and is removed when the status is cleared.
So there is constant insertion and purging will happen on this table.
We are using ASSM and tablespace is LOCAL.
This Table has a LONG column also.
Is this problem because of LONG column ?
So here there are 2 problems.
1) INSERTs are not using the space created by DELETE.
2) New INSERTs are taking much more space then expected ?
Let me have your suggestion
Thanks,

I think when you do DELETE it removes the data but
it's not releasing any used space and it's still
marked as used space. I think reorganizing would help
to compress and pack all block and relase any unused
space in blocks. Why do you think that? Deleting data will create space that can be reused by subsequent insert/ update operations. It is not going to release space back to the tablespace to make it available for inserts into other tables in the tablespace, but that's not generally an issue unless you are permanently decreasing the size of a table, which is pretty rare.
Would you also please explain about different about
LOB and LONG ? or point me to any link which explain
baout it.From the Oracle Concepts manual's section on the LONG data type
"Note:
Do not create tables with LONG columns. Use LOB columns (CLOB, NCLOB) instead. LONG columns are supported only for backward compatibility.
Oracle also recommends that you convert existing LONG columns to LOB columns. LOB columns are subject to far fewer restrictions than LONG columns. Further, LOB functionality is enhanced in every release, whereas LONG functionality has been static for several releases."
LONG was a very badly implemented solution to storing large amounts of data. LOBs are a much, much better designed solution-- you should always be using LOBs.
Justin

ADF Table need to be refresh after deleting row

In the table.
After deleting the row use the VO,
ViewObject reqVO = getRequestVO("Requests");
reqVO.clearCache();
reqVO.executeQuery();
then refresh the table to display rows.
AdfUtil.addPartialTarget("tableID");
The table seems to be refreshed, but the row already be deleted still in the table.
If leave the table page, and go back the table page,then the table display rows correct, can't the row that already be deleted.
What is the wrong with the refreshing table?

Can you try refreshing the iterator before setting the partial target as below?
DCBindingContainer bindings =
*(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();*
DCIteratorBinding iteratorBinding =
*(DCIteratorBinding)bindings.get("<ITERATOR_NAME_IN_PAGEDEF>");*
*if (iteratorBinding != null) {*
iteratorBinding.executeQuery();
Thanks,
Navaneeth

GetSelectedRowKeys() returns more than one on Single Selection Tree Table

Hi,
I found that this issue occurring after PS3 (I think.)
I have a tree table component, which allows single row selection. There is a listener on a column of the tree table as follows:
public void listenPackageUnit(ValueChangeEvent valueChangeEvent)
Object oldKey = getTreeComponent().getRowKey();
try
* Retrieve index of selected package unit
* NOTE: Subtract 1 to remove no selection value. This only
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if (valueChangeEvent.getNewValue() != null)
Row row = null;
String selectedPackageUnit = null;
int packageUnitIndex = (Integer) valueChangeEvent.getNewValue();
packageUnitIndex--;
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* the no selection (blank) value.
if (packageUnitIndex >= 0)
* Using index, determine the value of the selected package unit
DCIteratorBinding packageUnitsIterator =
(DCIteratorBinding) PasUiADFUtil.resolveExpression("#{bindings.PackageUnitsIterator}");
Row newRow =
packageUnitsIterator.getRowAtRangeIndex(packageUnitIndex);
selectedPackageUnit = (String) newRow.getAttribute("LookupCode");
RowKeySet selection = this.getTreeComponent().getSelectedRowKeys();
if (selection != null && selection.getSize() > 0)
for (Object facesTreeRowKey: selection)
this.getTreeComponent().setRowKey(facesTreeRowKey);
JUCtrlHierNodeBinding rowData =
(JUCtrlHierNodeBinding) this.getTreeComponent().getRowData();
row = rowData.getRow();
setSelectedLabel((String) row.getAttribute("Label"));
setSelectedLabelType((String) row.getAttribute("LabelType"));
row.setAttribute("PackageUnit", selectedPackageUnit);
getTreeComponent().setRowKey(oldKey);
finally
getTreeComponent().setRowKey(oldKey);
The issue is that getSelectedRowKeys() returns more than one when the user selects a child row in the tree table.
It seems to be returning the total number counting from the top parent through the child.
(For example, if the child is the second generation, it returns 2, and if the third generation, it returns 3.)
This is causing the issue that the method tries to update the attribute of the parent row with a value for the child row. (And it fails, because the attribute is updateable only while new.)
I remember getSelectedRowKeys() always returned one, the selected child itself, when I coded this around October, 2010.
Is this a design change after PS3? Why does it return more than one though the tree table is for single selection?
How can I get around this issue?
It would be truly appreciated if we can get any quick help, since we are at final testing phase of our product.
Thank you,
Tomo

Hi Vinod,
I found the solution. Thank you very much for your suggestions. :)
Now my listenSelection (custom listener of the tree table) looks like below:
public void listenSelection(SelectionEvent selectionEvent)
Row currentRow;
PasUiADFUtil.invokeEL("#{bindings.TransactionLabelTopLevelVO1.collectionModel.makeCurrent}",
new Class[] { SelectionEvent.class },
new Object[] { selectionEvent });
Object oldKey = getTreeComponent().getRowKey();
try
if (this.getTreeComponent() != null)
RowKeySet rks = this.getTreeComponent().getSelectedRowKeys();
Iterator keys = rks.iterator();
while (keys.hasNext())
List key = (List) keys.next();
this.getTreeComponent().setRowKey(key);
JUCtrlHierNodeBinding node =
(JUCtrlHierNodeBinding) this.getTreeComponent().getRowData();
if (node != null)
currentRow = node.getRow();
if (currentRow != null)
this.setSelectedRow(currentRow);
setSelectedLabel((String) currentRow.getAttribute("Label"));
setSelectedLabelType((String) currentRow.getAttribute("LabelType"));
String shippedItemFlag =
(String) currentRow.getAttribute("ShippedItemFlagValue");
if (shippedItemFlag != null && shippedItemFlag.equals("1"))
setDisableAdd(true);
else
setDisableAdd(false);
finally
getTreeComponent().setRowKey(oldKey);
/* Refresh Action menu and buttons */
RequestContext.getCurrentInstance().addPartialTarget(this.getActionMenu());
RequestContext.getCurrentInstance().addPartialTarget(this.getToolbar());
And my tree table is like below:
<af:treeTable value="#{bindings.TransactionLabelTopLevelVO1.treeModel}"
var="node" rowSelection="single" id="tt1"
contentDelivery="immediate" fetchSize="25"
emptyText="#{bindings.TransactionLabelTopLevelVO1.viewable ? commonFoundationMsgBundle.NO_DATA_TO_DISPLAY : commonFoundationMsgBundle.ACCESS_DENIED}"
selectionListener="#{pageFlowScope.MaintainTransactionSerialAssociationBean.listenSelection}"
binding="#{pageFlowScope.MaintainTransactionSerialAssociationBean.treeComponent}"
summary="#{maintainAssociationUiBundle.CONTAINER_SERIAL_HIERARCHY}">

The listener is now always getting the currently selected row only.
Tomo

Space reusage after deletion in compressed table

Hi,
Some sources tell, that free space after DELETE in compressed table is not reused.
For example, this http://www.trivadis.com/uploads/tx_cabagdownloadarea/table_compression2_0411EN.pdf
Is it true?
Unfortunatly I cannot reproduce it.

Unfortunatly the question is still open.
In Oracle 9i space, freed after DELETE in compressed block, was not reused in subsequent inserts.
Isn't it?
I saw many evidences from other people. One link I gave above.
But in Oracle 10g I see another figures. After delete rows in compressed blocks, and subsequent insert into that block, block defragmented!
Please, if who know any documentation about change in this behavior, please post links.
p.s.
in 10g:
1. CTAS compress. Block is full.
2. after, deleted every 4 from 5 rows.
avsp=0x3b
tosp=0x99e
0x24:pri[0]     offs=0xeb0
0x26:pri[1]     offs=0xea8 -- deleted
0x28:pri[2]     offs=0xea0 -- deleted
0x2a:pri[3]     offs=0xe98 -- deleted
0x2c:pri[4]     offs=0xe90 -- deleted
0x2e:pri[5]     offs=0xe88 -- live
0x30:pri[6]     offs=0xe80 -- deleted
0x32:pri[7]     offs=0xe78 -- deleted
0x34:pri[8]     offs=0xe70 -- deleted
0x36:pri[9]     offs=0xe68 -- deleted
0x38:pri[10]     offs=0xe60 -- live
0x3a:pri[11]     offs=0xe58 -- deleted
0x3c:pri[12]     offs=0xe50 -- deleted
0x3e:pri[13]     offs=0xe48 -- deleted
0x40:pri[14]     offs=0xe40 -- deleted
0x42:pri[15]     offs=0xe38 -- live
0x44:pri[16]     offs=0xe30 -- deleted
0x46:pri[17]     offs=0xe28 -- deleted
0x48:pri[18]     offs=0xe20 -- deleted
0x4a:pri[19]     offs=0xe18 -- deleted
0x4c:pri[20]     offs=0xe10 -- live
...3. insert into table t select from ... where rownum < 1000;
Inserted rows were inserted in a several blocks. Total number of not empty blocks was not changed. Chains did not occure.
Block above looks as follow:
avsp=0x7d
tosp=0x7d
0x24:pri[0]     offs=0xeb0
0x26:pri[1]     offs=0x776 - new
0x28:pri[2]     offs=0x84b - new
0x2a:pri[3]     offs=0x920 - new
0x2c:pri[4]     offs=0x9f5 - new
0x2e:pri[5]     offs=0xea8 - old
0x30:pri[6]     offs=0xaca - new
0x32:pri[7]     offs=0xb9f - new
0x34:pri[8]     offs=0x34d - new
0x36:pri[9]     offs=0x422 - new
0x38:pri[10]     offs=0xea0 - old
0x3a:pri[11]     offs=0x4f7 - new
0x3c:pri[12]     offs=0x5cc - new
0x3e:pri[13]     offs=0x6a1 - new
0x40:pri[14]     sfll=16
0x42:pri[15]     offs=0xe98 - old
0x44:pri[16]     sfll=17
0x46:pri[17]     sfll=18
0x48:pri[18]     sfll=19
0x4a:pri[19]     sfll=21
0x4c:pri[20]     offs=0xe90 -- old
0x4e:pri[21]     sfll=22
0x50:pri[22]     sfll=23
0x52:pri[23]     sfll=24
0x54:pri[24]     sfll=26As we see, that old rows were defragmented, and repacked, and moved to the bottom of block.
New rows (inserted after compressing of table) fill remaining space.
So, deleted space was reused.

Release of space after delete/truncate table

Hello,
How does release of space after delete/truncate table works? Is the space used before deletion released once delete is complete or not? Will I see the space occupied by deleted table as free in dba_segments or will I need to reorganize the table (drop and recreate again?). Reason why I am asking is that I can see table with 0 rows, but in dba_segment I can see it is occupying few gigabytes....
Thank you

Here is a little illustration for you;
SQL> conn ogan/password
Connected.
SQL> create table ogan_deneme as select * from all_objects;
Table created.
SQL> select count(*) from ogan_deneme;
COUNT(*)
    228470
SQL> set line 1000
SQL> set pagesize 1000
SQL> select * from dba_segments where owner='OGAN';
OWNER    SEGMENT_NAME        PARTITION_NAME           SEGMENT_TYPE       TABLESPACE_NAME                HEADER_FILE HEADER_BLOCK      BYTES     BLOCKS    EXTENTS INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS PCT_INCREASE FREELISTS FREELIST_GROUPS RELATIVE_FNO BUFFER_
OGAN      OGAN_DENEME          TABLE              SYSTEM                                 854       319981   *30408704*       *1856*         *44*          65536                       1 2147483645                       1               1          854 DEFAULT
SQL> truncate table ogan_deneme;
Table truncated.
SQL> select * from dba_segments where owner='OGAN';
OWNER    SEGMENT_NAME        PARTITION_NAME           SEGMENT_TYPE       TABLESPACE_NAME                HEADER_FILE HEADER_BLOCK      BYTES     BLOCKS    EXTENTS INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS PCT_INCREASE FREELISTS FREELIST_GROUPS RELATIVE_FNO BUFFER_
OGAN      OGAN_DENEME           TABLE              SYSTEM                                 854       319981      *65536*          *4*          *1*          65536                       1 2147483645                       1               1          854 DEFAULT
SQL>Hope it Helps,
Ogan

Row Selection for second and subsequent level nodes in tree table

Hi All,
We have a .jsff page with tree bindings to display a three-level hierarchy tree table.Suppose the hierarchy is
-> Department
->-> Employees
->->-> Employee details.
I have a use case where-in when we add the employee node within a department,the department node must expand and the newly added employee node must be selected.
In both the cases(for new department or employee), we are following the approach mentioned below:
1. Get the treeTable Iterator.
2.Adding the new object to the java ArrayList which is bound to the corresponding level in the tree.
3.Refreshing the treeTable iterator.
4.Execute treeTable.setSelectedRowKeys()
5.Add a partial target to the treetable.
The issue is that the new employee gets added but the upper-level department node collapses and no selection is performed on the new employee node.
But when we add a new department node, it gets selected on creation.
Is there any additional steps to be performed for second-level row selection?

Hi,
Thanks for the reply.
I looked at the code given in sample 61.
In the sample, a new node is not added dynamically (for ex.either new location or its child nodes.)
As mentioned in the above post, after adding a new node at a level in our use case, when we perform the refresh of the tree-table's iterator,the selection state of the rows is not shown on the table.
If the tree-table's iterator is not refreshed and the treeTable.setSelectedRowKeys() is executed, the rows get selected but the subsequent node additions do not show up in the table as the table's iterator is not refreshed.
Any sample code is available where in both the addition of new node and its selection is performed at the same time?
Thanks.

ADF Tree setting focus back to parent node after deletion of child node

Hi,
Is there a way to get the focus back to the parent node (or rather any particular node) in a tree?
I have a use case where we need to get the focus back to the parent node after a child node is deleted.
Currently the focus is shifted to the next node in the tree, but the need is to get the focus shifted back to the parent node. Also the parent node should be re-invoked to populate to get the latest status after deletion of the child node.
Any help/pointers?
Thanks

Thanks for the reply Frank.
I saw the link http://sreevardhanadf.blogspot.in/2012/07/showing-next-row-as-current-row-after.html
However the issue is since I am using custom created tree using POJO tree item (composite object).
calling myTree.getWrappedData() doesn't gives me a handle to JUCtrlHierBinding and subsequent access to JUCtrlHierNodeBinding.
my program gives me data like -
List<MyTreeItem> treeData = (List<MyTreeItem>)treeModel.getWrappedData();
because my tree model is build using -
treeModel = new ChildPropertyTreeModel(items, "children");
where items is List of <MyTreeItem>
Hence I am unable to get a handle using -
List nodeParentList = nodeParent .getKeyPath();
I am programmatically able to invoke the parent node to get the fresh data, only issue is the focus/selection of that node is not happening
Is there a way around?
Thanks
Sachin

Table grows to 6 GB with 6k records only after Delete ORA-01653:

Hello,
I have a Table that i delete data from using
DELETE FROM DJ_20255_OUTPUT a where trunc(a.LOADED_DATE) <trunc(sysdate -7);
COMMIT;
the issue i have is when i want to repopulate the table i get the Error ORA-01653: unable to extend table.
The table grows to over 6gb but if i truncate that table and in both cases there is no data left in the table after either action the table will only grow to 0.8 Mb once populated.
so with truncate table size is 0.8MB and if i use delete from.... the table grows to 6GB
The repopulation of the table uses mutiple insert statments commiting after each one.
is this a bug or is there an action i should perform onece I have deleted the data?
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi

Is this an Index Organized table ? (select IOT_TYPE from user_tables where table_name = 'DJ_20255_OUTPUT' ;)
Are you saying that you use this sequence :
DELETE .... in one single call to delete all the rows
INSERT ... in multiple calls with COMMIT after each row
Hemant K Chitale

Tree node selection lost after returning from called page

Hi
in a default unbound task flow i have a Page1 calling Page2.
Page1 displays a master-detail data using treetable component, while Page2 displays detail data (selected from Page1) as a read-only form.
When coming back from Page2, Page1 tree node selection is lost and tree table is rendered as if was called for a first time (detail data are disclosed).
How can I restore an original selection?
(Jdev 11.1.2.2)
Many thanx

1. before goind to the Page 2, remember somewhere the selected row keys, as follows:
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             JUCtrlHierBinding treeTableBinding = null;
             treeTableBinding =
                     (JUCtrlHierBinding)((CollectionModel)table.getValue()).getWrappedData();
             JUCtrlHierNodeBinding node =
                 treeTableBinding.findNodeByKeyPath(key);
             RowKeySet newRks = new RowKeySetImpl();
             if (node != null)
                 newRks.add(node.getKeyPath());
             callSelectionListener(yourTreeTable, newRks);
            // refresh your tree table - ommited here
     // where is:
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         SelectionEvent selEv =
             new SelectionEvent(table, new RowKeySetImpl(), discRows);
         JSFUtils.resloveMethodExpression("bindings.YourVO.treeModel.makeCurrent", // <-- of course, adjust this value to the your selectionListener expression
                                          null,
                                          new Class[] { SelectionEvent.class },
                                          new Object[] { selEv });
     } // of makeCurrent()
    public Object resloveMethodExpression(String expression, Class returnType, Class[] argTypes, Object[] argValues) {
        FacesContext facesContext = FacesContext.getCurrentInstance();
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        ELContext elContext = facesContext.getELContext();
        MethodExpression methodExpression = elFactory.createMethodExpression(elContext, expression, returnType, argTypes);
        return methodExpression.invoke(elContext, argValues);
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Tree Table Selection after deletion

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