Getting total number of instances (objects) running in a JVM

Hello,
Is there any way to get total number of objects in the heap of a JVM without using any profiling tools like JProbe
Regards,
Nikhil.K.R

Have you looked at the JDK troubleshooting tools, in particular jmap -histo:
http://java.sun.com/javase/6/docs/technotes/tools/index.html#troubleshoot
You might also find useful info in the troubleshooting guide:
http://java.sun.com/javase/6/webnotes/trouble/index.html

Similar Messages

How count the total number of instances ?

I have 2 scenarios :-
1. How to get the total number of instances of the node in a BO?
eg :
businessobject BO1   {
element BO_ID;
                   node NODE1 [0..n]
                     element Node_ID;
                     element Status ;
                     element value:
I want to get total number of the NODES instances in the particular instance of the BO1.   !!!?????
2. I want to make some calculations based on the attributes of the NODE1 , in the   BeforeSave .absl of the Business Object BO1.
eg:
something like this :-
In BeforeSave of BO1.absl -
for ( all the instances in NODE1 )
{   if (NODE1.status == true)
             sum = sum + NODE1.value
Please help !!!!

Your approach is correct.
You can use a standard Query or create your own Query to run through Datainstances.
Documentation with examples for Queries in ABSL see here: https://my020062.sapbydesign.com/sap/ap/ui/repository/SAP_BYD_WEKTRA/CP/sapLSUIContentPlayerTestPage.html?manifest=067D03A7602B1D490899DF46B5082089&COMPONENT=A1S_PDI&RELEASE=260&LANGUAGE=en&REGION=&INDUSTRY=&TASK=CR_VIEW&sap-language=EN
Looking / Clincking for "SAP Business ByDesign Scripting Language" and "Syntax for Implementation of Actions and Events" and "Query"

How to get total number of nodes in a JTree?

Hi,
I am trying to get total number of nodes in a JTree, and cannot find a way to do it.
The current getRowCount() method returns the number of rows that are currently being displayed.
Is there a way to do this or I am missing something?
thanks,

How many nodes does this tree have?
import java.awt.EventQueue;
import javax.swing.*;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.*;
public class BigTree {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                TreeModel model = new TreeModel() {
                    private String node = "Node!";
                    @Override
                    public void valueForPathChanged(TreePath path,
                            Object newValue) {
                        // not mutable
                    @Override
                    public void removeTreeModelListener(TreeModelListener l) {
                        // not mutable
                    @Override
                    public boolean isLeaf(Object node) {
                        return false;
                    @Override
                    public Object getRoot() {
                        return node;
                    @Override
                    public int getIndexOfChild(Object parent, Object child) {
                        return child == node ? 0 : -1;
                    @Override
                    public int getChildCount(Object parent) {
                        return 1;
                    @Override
                    public Object getChild(Object parent, int index) {
                        return node;
                    @Override
                    public void addTreeModelListener(TreeModelListener l) {
                        // not mutable
                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                frame.getContentPane().add(new JScrollPane(new JTree(model)));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
}But for bounded tree model using DefaultMutableTreeNode look at bread/depth/preorder enumeration methods to walk the entire tree. Or look at the source code for those and adapt them to work with the TreeModel interface.

How to get total number of result count for particular key on cluster

Hi-
My application requirement is client side require only limited number of data for 'Search Key' form total records found in cluster. Also i need 'total number of result count' for that key present on the custer.
To get subset of record i'm using IndexAwarefilter and returning only limited set each individual node. though i get total number of records present on the individual node, it is not possible to return this count to client form IndexAwarefilter (filter return only Binary set).
Is there anyway i can get this number (total result size) on client side without returning whole chunk of data?
Thanks in advance.
Prashant

user11100190 wrote:
Hi,
Thanks for suggesting a soultion, it works well.
But apart from the count (cardinality), the client also expects the actual results. In this case, it seems that the filter will be executed twice (once for counting, then once again for generating actual resultset)
Actually, we need to perform the paging. In order to achieve paging in efficient manner we need that filter returns only the PAGESIZE records and it also returns the total 'count' that meets the criteria.
If you want to do paging, you can use the LimitFilter class.
If you want to have paging AND total number of results, then at the moment you have to use two passes if you want to use out-of-the-box features because LimitFilter does not return the total number of results (which by the way may change between two page retrieval).
What we currently do is, the filter puts the total count in a static variable and but returns only the first N records. The aggregator then clubs these info into a single list and returns to the client. (The List returned by aggregator contains a special entry representing the count).
This is not really a good idea because if you have more than one user doing this operation then you will have problems storing more than one values in a single static variable and you used a cache service with a thread-pool (thread-count set to larger than one).
We assume that the aggregator will execute immediately after the filter on the same node, this way aggregator will always read the count set by the filter.
You can't assume this if you have multiple client threads doing the same kind of filtering operation and you have a thread-pool configured for the cache service.
Please tell us if our approach will always work, and whether it will be efficient as compared to using Count class which requires executing filter twice.
No it won't if you used a thread-pool. Also, it might happen that Coherence will execute the filtering and the aggregation from the same client thread multiple times on the same node if some partitions were newly moved to the node which already executed the filtering+aggregation once. I don't know anything which would even prevent this being executed on a separate thread concurrently.
The following solution may be working, but I can't fully recommend it as it may leak memory depending on how exactly the filtering and aggregation is implemented (if it is possible that a filtering pass is done but the corresponding aggregation is not executed on the node because of some partitions moved away).
At sending the cache.aggregate(Filter, EntryAggregator) call you should specify a unique key for each such filtering operation to both the filter and the aggregator.
On the storage node you should have a static HashMap.
The filter should do the following two steps while being synchronized on the HashMap.
1. Ensure that a ConcurrentLinkedQueue object exists in a HashMap keyed by that unique key, and
2. Enqueue the total number count you want to pass to the aggregator into that queue.
The parallel aggregator should do the following two steps while being synchronized on the HashMap.
1. Dequeue a single element from the queue, and return it as a partial total count.
2. If the queue is now empty, then remove it from the HashMap.
The parallel aggregator should return the popped number as a partial total count as part of the partial result.
The client side of the parallel aware aggregator should sum the total counts in the partial result.
Since the enqueueing and dequeueing may be interleaved from multiple threads, it may be possible that the partial total count returned in a result does not correspond to the data in the partial result, so you should not base anything on that assumption.
Once again, that approach may leak memory based on how Coherence is internally implemented, so I can't recommend this approach but it may work.
Another thought is that since returning entire cached values from an aggregation is more expensive than filtering (you have to deserialize and reserialize objects), you may still be better off by running a separate count and filter pass from the client, since for that you may not need to deserialize entries at all, so the cost on the server may be lower.
Best regards,
Robert

How to get total number of days

Hi All,
how to get total number of days , for example if month eq 05 then need to get total number of days until MAY 31.
and how to get total number of days in a month.
Thank You,,
Sriii..

Hi Sridhar,
Pls Try to search before posting general questions.
Try this,
CALL FUNCTION 'DAYS_BETWEEN_TWO_DATES'
    EXPORTING
      i_datum_bis                   = p_lv_date1
      i_datum_von                   = p_lv_date2
   IMPORTING
     e_tage                        = p_e_date_difference
   EXCEPTIONS
     days_method_not_defined       = 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.
Regards,
Sunil kairam.

How to get total number of days in current Fiscal period/year

Hi,
I need to get total number of days in current Fiscal period/year (current month) and assign it to an infoobject. I need a routine for this. Is there any function module to get this.If possible pls paste the ABAP code also for this task. Thanks in advance

here is the FM:
LAST_DAY_IN_PERIOD_GET
KJ!!!

How to get total number of licenses

Hi everyone,
Who knows how to get the total number of licenses, I am using SBO 2005 PL07+VB.Net. from SDK help file I saw there is a SAP Business One License API, but I cann't find this API from object browse, who knows which file contents the license API.
Thanks in advance!
Kathy

Hi Kathy,
Since (un-?)fortunately the license server has been moved from DCOM to CORBA, this information is currently obsolete (I still hope we will get this information through the SDK some time in future...).
As an interim solution you will have to get this information from the B1LicenseFile.txt file through some small application you write (you could have e.g. a service that writes the information you are interested in into some table in some database - and retrieve this information through a SQL statement).
HTH,
Frank

How to get total number of products for the site?

Hi,
I want to know the total number of products available for the site. i checked in the dcs_product table, it shows 40849 unique products. is this the total number of products count which are used in the site?
I have another table in CATA schema dcs_product_sites, when i run the CatalogMaintenanceService to populate the records in this table, getting only 26000 products. Please let me know why this difference when i run the service.
Thanks

dcs_product table gives all products in your catalog.
dcs_product_site will give products for a particular site.
If you have more than one site, then you need to query for that particular site.
And the number of products you show also depends upon the start and end date on the products.
And also some custom filters you have like Out of stock items etc.
Peace
Shaik

Can I get total number of page in 'After Report' Trigger?

Currently, I use the format trigger of a field in Margin. In the trigger, I use srw.get_page_num(page_num) to get the current page number and call a package procedure to update a record. For example, if the report has 10 pages, it will update 10 times. However, could anyone know can I use another method instead? (Get the total number of page in one, then no need to update it every page) Thank you.
(using Report 2.5)

Thanks. I know I can choose &TotalPhysicalPages in a field for displaying. But the problem is I need to update DB for that number. So I cannot refer that value of field to run a procedure in package for update the total page number in a record. Actually, this function is already done for years. (as I mentioned in my previous message) But I would like to know can I use another method to update it in one time instead. Thank you.

How to get total number of pages from .doc file without using Office interop?

Hi,
Kindly help me in getting the total number of pages from a .doc file not .docx file using C#. I know how to get by using Office interop but I do not want to use Office interop.
So, without office automation in C# let me know how to get the total number of pages from a .doc file.
Regards,
Ashok

Hi Ashok,
>> I know how to get by using Office interop but I do not want to use Office interop
Could you tell us why you don't want to use Office interop?
As far as I know, this is the easiest way to achieve.Hmmm,this is my answer
http://msdn.microsoft.com/en-us/library/microsoft.office.interop.word.pagenumbers.startingnumber(v=office.14).aspx
Best regards,
Kristin
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Getting Total number of pages in Reports 3.0?

In the layout model of a report I want to access the value of
Total Pages in a format trigger on a repeating frame. You can use
srw.get_page_num to get the current page number but I want the
curent value of Total Pages. Can this be done?
null

Welcome to the forums!
Keynote does not have a way to automatically insert the total number of slides. You would have to do this manually (although you could do it on the slide masters, so that only one or a few would have to be changed).

How to get Total Number of XML Nodes?

Hello All,
I have a Flash program I'm doing in Actionscript 3, using CS6.
I'm using the XMLSocket Class to read-in XML Data. I will write some sample XML Data that is being sent to the Flash
program below...
I know with this line here (below) I can access the 4th "element or node" of that XML Data.
     Accessing XML Nodes/Elements:
// *I created an XML Variable called xml, and "e.data" contains ALL the XML Data
var xml:XML = XML(e.data);
// Accessing the 4th element of the data:
xml.MESSAGE[3].@VAR;          --->     "loggedOutUsers"
xml.MESSAGE[3].@TEXT;         --->     "15"
     SAMPLE XML DATA:
     <FRAME>
0               <MESSAGE VAR="screen2Display" TEXT="FRAME_1"/>
1               <MESSAGE VAR="numUsers" TEXT="27"/>
2               <MESSAGE VAR="loggedInUsers" TEXT="12"/>
3               <MESSAGE VAR="loggedOutUsers" TEXT="15"/>
4               <MESSAGE VAR="admins" TEXT="2"/>
     </FRAME>
I'm new to Flash and Actionscript but I'm very familiar with other languages and how arrays work and such, and I know for
example, in a Shell Script to get the total number of elements in an array called "myArray" I would write something like
this --> ${#myArray[@]}. And since processing the XML Data looks an awful lot like an array I figured there was maybe
some way of accessing the total number of "elements/nodes" in the XML Data...?
Any thoughts would be much appreciated!
Thanks in Advance,
Matt

Hey vamsibatu, thanks again for the quick reply!
Ohhh, ok I gotcha. That makes more sense.
So I just tried this loop below and I guess I could use this and just keep assigning an int variable to the output so
when it finishes I will be left with a variable containing the total number of elements:
for (var x:int in xml.MESSAGE)
     trace("x == " + x);
*Which OUTPUTS the Following:
x == 0
x == 1
x == 2
x == 3
x == 4
So I guess I could do something like this and when the loop completes I will be left with the total number of elements/nodes...
var myTotal:int;
for (var x:int in xml.MESSAGE)
    myTotal = x;
// add '1' to myTotal since the XML Data is zero-based:
myTotal += 1;
trace("myTotal == " + myTotal);
*Which Prints:
"myTotal == 5"
Thanks again for you suggestions, much appreciated!
I think that should be good enough for what I needed. Thanks...
Thanks Again,
Matt

How can I get total number of pages in the folio?

Hello guys, I need some help.
I'm trying to get the total number of pages in the folio, but, currently, I only success to get the total number of pages from current article, is there someway to get it?
My code: gist:de1de89b493024815c3e
Thanks so much.

My first advice in situations like this is the double and triple check that this requirement still exists and it is driven
by the business. This is great opportunity to refactor some unnecessary complexity out of the solution if you identify it.
Assuming it is a valid and verified requirement, how you approach depends on the composition of the Interchange. Meaning, if you receive single ISA...IEA blocks with a single GS...GE, you can use the max of BTS.InterchangeSequenceNumber.
If you receive multiple ISA or GS's, it's a little different.

Getting total number of pages

Hello friends at www.oracle.com ,
I need to know what's the Reports variable that gets the total number of pages, and how I can refer it in a PL/SQL block.
I know there's an SRW function to get the actual page number (SRW.GET_PAGE_NUM), but I need to know if there's a function, or system variable, that gets the total number of pages that will be printed during Reports execution.
Thanks,
Franklin Gongalves Jr.
[email protected]

I am not sure of any variable to use in PL/SQL but instead u can use a field by urself
like serial_number using summary column in ur report
which u can check the value similar to total pages
If u need help let me know
Sri
Hello friends at www.oracle.com ,
I need to know what's the Reports variable that gets the total number of pages, and how I can refer it in a PL/SQL block.
I know there's an SRW function to get the actual page number (SRW.GET_PAGE_NUM), but I need to know if there's a function, or system variable, that gets the total number of pages that will be printed during Reports execution.
Thanks,
Franklin Gongalves Jr.
[email protected]

Get total number of comps that are used in the opened project?

Hi everyone!
Does anyone know how i can get the total number of comps in the project-panel or the total number of comps that are used in the opened project?
This is what i have so far, however it's not exactly what I am looking for:
for (var i = 1; i <= app.project.numItems; i++) {
    if (app.project.item(i) instanceof CompItem) {
        alert(i);
JesB

You can get the total number of comps with pretty much what you have
var numComps = 0;
for (var i = 1; i <= app.project.numItems; i++) {
    if (app.project.item(i) instanceof CompItem) {
        numComps++;
You could look at the usedIn attribute of each comp to see how many comps appear in other comps, but that won't identify your top-level comp. I'm not sure how you would do that unless you just bump the count by 1:
var numUsedComps = 0;
var numComps = 0;
for (var i = 1; i <= app.project.numItems; i++) {
    if (app.project.item(i) instanceof CompItem){
        numComps++;
        if (app.project.item(i).usedIn.length > 0) {
            numUsedComps++;
if (numComps > 0) numUsedComps++;
alert("number of comps = " + numComps + "\rnumber of used comps = " + numUsedComps);
Dan

Getting total number of instances (objects) running in a JVM

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