Why are the following processes always using lots of memory?

Can someone tell me why the following processes are always using lots of memory and are always running?
kernel_task 280MB
java 300MB
clamd 120MB
mds 100MB
WindowServer 100MB
coreservicesd 60MB

Because they require that much memory and because the processes are always in use.
This is one reason why the minimum system memory requirement is 1 GB.
Now, you have one third-party process listed, clamd, which is used by ClamXAV anti-virus software. If you can uninstall it you will recover the memory needed by clamd.

Similar Messages

Why does the snmpcoll process always start up even if SNMP Statistics Collection is turned off?

Why does the snmpcoll process always start up even if SNMP
Statistics Collection is turned off?
<P>
The SNMP Statistics Collection field on the Server Status|SNMP
Subagent Configuration form affects only the SNMP subagent, which is a separate entity from
the collector process (snmpcoll). Currently, snmpcoll does not look
at the SNMP configuration data when it starts up. It is started by
the dispatcher and terminates when the dispatcher terminates. Many
of the statistics are supposed to reflect cumulative values recorded since MTA
initialization, such as the total number of messages sent and received.
As a convenience, the collector process collects information in the
background even while the SNMP subagent is turned off; this way,
the values are available when the SNMP subagent is configured and
turned on.

Collections fall off on the Date of First Deliquency 7-7.5 years later; that is supposed to be reported as the first time you went late (1-30 days) on the OC (original creditor) in the chain of events leading up to it's being farmed out for collection as I underestand it. DOFD though sometimes doesn't get reported right, and by default it will be the date the collection is added to the bureaus. As an example I have an awkward collection (not sure how I got it looking at the payment history thought I'd cancelled that account but TWC billing apparently didn't think so) which I went late on in 2009, but didn't get farmed out till late 2010. The DOFD is 6/09 looking at it, and it's expected to come off according to the bureaus 6/16 as a result. Different negatives have their own rules though.

When using Creative Cloud Library assets created in Illustrator why are the naming conventions I use not being pulled over into the Photoshop layers?

I create the Creative Cloud Library asset in illustrator and give it a name such as "camera-icon". It shows up in my Creative Cloud Library pane in Photoshop as "camera-icon". When I use that asset in Photoshop the layer is randomly named "a56bd81d-d81f-4815-82b3-5795d410b527". Why is this happening? Shouldn't that layer resolve the name back to "camera-icon" so that when I extract files for use in my application the naming convention is correct. Right now I have to manually rename that layer again. Is this a bug or have I just not done something correctly?

I think you have pasted the entire crash log. In case of such issues in future, please paste the error screenshot.
Seems to be a permission issue. Lets follow the below suggestions:
Solution 1: Rename the following folders on your machine:
'/Library/ColorSync/Profiles/Profiles'
'/Library/ColorSync/Profiles/Recommended'
Solution 2: Rename the following files:
'/Library/Application Support/Adobe/caps/Media_db.db'
'/Library/Application Support/Adobe/caps/pdb.db'
Make sure you dont touch caps.db under the same folder. Now run the installer again. Let me know if you need more help.
Solution 3:
Please Run following commands on terminal on the machine (this will remove the corrupt fonts and should allow you to run the installer successfully) -
sudo mv "/Library/Fonts/ACaslonPro-Bold.otf" /tmp/
sudo mv "/Library/Application Support/Adobe/SavedFonts/current/AdobeArabic-Bold.otf" /tmp/
sudo mv "/Library/Application Support/Adobe/HelpCfg/de_DE/goURL_lr_photoshop_de.csv" /tmp/
Please feel free to respond to this thread if you have any questions about the steps listed within the document. If you could also respond with the specific error message you receive, It would be appreciated.

Why are the following not being backup?

EtreCheck reports that the following are not backed up, what up with that?
jmf
Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
          /sbin excluded from backup!
          /usr excluded from backup!
          /System excluded from backup!
          /bin excluded from backup!
          /private excluded from backup!
          /Library excluded from backup!
          /Applications excluded from backup!

That is a bug.. see
See D10 here.
I recommend you switch over to CCC.. it is much more reliable.

Why does out slapd process consume a lot of memory (1.1 GB)?

Our LDAP installation (4.1) on Solaris 5.8 consumes too much memory. It is now at 1.1 GB and rising. I have tuned the dbcachesize and cachesize parameters in the config file, but that has not helped.
I'd appreciate any help I can get in solving this problem. Also, I can't upgrade our installation due to other issues.

Which exact version are you using? There were some memory fixes in the service packs.

I've just started using the App Tabs. I think this feature could be handy but why are the sites not updated when I start Firefox. Now I have to manually update the site which is somewhat of a downer. Does any of you know where I'm going wrong?

I've just started using the App Tabs. I think this feature could be handy but why are the sites not updated when I start Firefox. Now I have to manually update the site which is somewhat of a downer. Does any of you know where I'm going wrong?

To answer the post title FireFox save all downloads automatically in the download folder, which you can find in the Documents folder. If you want to choose where to save your downloads go to tools>options>check always ask me where to save files.
Secondly, I am assuming you have IE 8 installed as this is the only version that supports this fix that is currently not in beta. Go to control panel>internet options>advanced tab and reset the settings at the bottom. This may or may not fix the problem but it is a good first step.

Why are the apps on my IPad scattered across the whole thing and when I open them they turn to little rectangles in the corner of the screen and I can't even use them or tap on anything. Also when I turn my iPad it doesn't flip the screen over

Why are the apps on my IPad scattered across the whole thing and when I open them they turn to little rectangles in the corner of the screen and I can't even use them or tap on anything. Also when I turn my iPad it doesn't flip the screen over.

Hi The next thing to do is to Restore back to Factory Settings this will get rid of any bugs . After Restore use same Apple ID /Password then you should get all your Apps & data back If you still have this problem make an Appointment at Apple Store . Cheers Brian

Why is the pinwheel popping up a lot during my use of iPhoto?

Why is the pinwheel popping up a lot during my use of iPhoto? What do I need to do to make it run smoother.
Thanks,
Erek

Lost of possibilities here:
What version of iPhoto? How many items in your Database? How much free space on your Hard Disk?
Have you tried trashing the cache and the plist file?

Why when i want to sync my phone with the computer it wants to delete all my apps how do i not let this happen. this is a different computer to the 1 i always use. i have authorised this computer but still wants to delete my apps

why when i want to sync my phone with the computer it wants to delete all my apps how do i not let this happen. this is a different computer to the 1 i always use. i have authorised this computer but still wants to delete my apps

Why you can't redownload? Don't you have the Apple ID that used to download these apps?
You can "transfer purchaces" by right click on your iphone in iTunes but i guess you computer is not authorized and will ask you to authorize with Apple ID. Try it.

Why are the only numbers that show up in my "Recents" on the iPhone 3G the calls that I've missed? I used to have all recent numbers that had called, on my old phone.

Why are the only numbers that show up in my "Recents" on the iPhone 3G the calls that I've missed? I used to have all recent numbers that had called, on my old phone. Is there some way to make it so that all my recent calls (in and out) show up on my phone?

At the top there's a toggle between "All" and "Missed". Click "All"

What are the major process to transfer the data from legacy to sap system.

What are the major process to transfer the data from legacy to sap system using BDC at Real Time only?

hi,
BATCH DATA COMMUNICATION
main methods are:
1. SESSION METHOD
2. CALL TRANSACTION
3. DIRECT INPUT
Advantages offered by BATCH INPUT method:
1. Can process large data volumes in batch.
2. Can be planned and submitted in the background.
3. No manual interaction is required when data is transferred.
4. Data integrity is maintained as whatever data is transferred to the table is through transaction. Hence batch input data is submitted to all the checks and validations.
To implement one of the supported data transfers, you must often write the program that exports the data from your non-SAP system. This program, known as a data transfer program must map the data from the external system into the data structure required by the SAP batch input program.
The batch input program must build all of the input to execute the SAP transaction.
Two main steps are required:
To build an internal table containing every screen and every field to be filled in during the execution of an SAP transaction.
To pass the table to SAP for processing.
Prerequisite for Data Transfer Program
Writing a Data Transfer Program involves following prerequisites:
Analyzing data from local file
Analyzing transaction
Analyzing transaction involves following steps:
The transaction code, if you do not already know it.
Which fields require input i.e., mandatory.
Which fields can you allow to default to standard values.
The names, types, and lengths of the fields that are used by a transaction.
Screen number and Name of module pool program behind a particular transaction.
To analyze a transaction::
Start the transaction by menu or by entering the transaction code in the command box.
(You can determine the transaction name by choosing System Status.)
Step through the transaction, entering the data will be required for processing your batch input data.
On each screen, note the program name and screen (dynpro) number.
(dynpro = dyn + pro. Dyn = screen, pro = number)
Display these by choosing System Status. The relevant fields are Program (dynpro) and Dynpro number. If pop-up windows occur during execution, you can get the program name and screen number by pressing F1 on any field or button on the screen.
The technical info pop-up shows not only the field information but also the program and screen.
For each field, check box, and radio button on each screen, press F1 (help) and then choose Technical Info.
Note the following information:
- The field name for batch input, which youll find in its own box.
- The length and data type of the field. You can display this information by double clicking on the Data Element field.
Find out the identification code for each function (button or menu) that you must execute to process the batch-input data (or to go to new screen).
Place the cursor on the button or menu entry while holding down the left mouse button. Then press F1.
In the pop-up window that follows, choose Technical info and note the code that is shown in the Function field.
You can also run any function that is assigned to a function key by way of the function key number. To display the list of available function keys, click on the right mouse button. Note the key number that is assigned to the functions you want to run.
Once you have program name, screen number, field name (screen field name), you can start writing.
DATA TRANSFER program.
Declaring internal table
First Integral Table similar to structure like local file.
Declaring internal table like BDCDATA
The data from internal table is not transferred directly to database table, it has to go through transaction. You need to pass data to particular screen and to particular screen-field. Data is passed to transaction in particular format, hence there is a need for batch input structure.
The batch input structure stores the data that is to be entered into SAP system and the actions that are necessary to process the data. The batch input structure is used by all of the batch input methods. You can use the same structure for all types of batch input, regardless of whether you are creating a session in the batch input queue or using CALL TRANSACTION.
This structure is BDCDATA, which can contain the batch input data for only a single run of a transaction. The typical processing loop in a program is as follows:
Create a BDCDATA structure
Write the structure out to a session or process it with CALL TRANSACTION USING; and then
Create a BDCDATA structure for the next transaction that is to be processed.
Within a BDCDATA structure, organize the data of screens in a transaction. Each screen that is processed in the course of a transaction must be identified with a BDCDATA record. This record uses the Program, Dynpro, and Dynbegin fields of the structure.
The screen identifier record is followed by a separate BDCDATA record for each value, to be entered into a field. These records use the FNAM and FVAL fields of the BDCDATA structure. Values to be entered in a field can be any of the following:
Data that is entered into screen fields.
Function codes that are entered into the command field. Such function codes execute functions in a transaction, such as Save or Enter.
The BDCDATA structure contains the following fields:
PROGRAM: Name of module pool program associated with the screen. Set this field only for the first record for the screen.
DYNPRO: Screen Number. Set this field only in the first record for the screen.
DYNBEGIN: Indicates the first record for the screen. Set this field to X, only for the first record for the screen. (Reset to (blank) for all other records.)
FNAM: Field Name. The FNAM field is not case-sensitive.
FVAL: Value for the field named in FNAM. The FVAL field is case-sensitive. Values assigned to this field are always padded on the right, if they are less than 132 characters. Values must be in character format.
Transferring data from local file to internal table
Data is uploaded to internal table by UPLOAD of WS_UPLOAD function.
Population of BDCDATA
For each record of internal table, you need to populate Internal table, which is similar to BDCDATA structure.
All these five initial steps are necessary for any type of BDC interface.
DATA TRANSFER program can call SESSION METHOD or CALL TRANSACTION. The initial steps for both the methods are same.
First step for both the methods is to upload the data to internal table. From Internal Table, the data is transferred to database table by two ways i.e., Session method and Call transaction.
SESSION METHOD
About Session method
In this method you transfer data from internal table to database table through sessions.
In this method, an ABAP/4 program reads the external data that is to be entered in the SAP System and stores the data in session. A session stores the actions that are required to enter your data using normal SAP transaction i.e., Data is transferred to session which in turn transfers data to database table.
Session is intermediate step between internal table and database table. Data along with its action is stored in session i.e., data for screen fields, to which screen it is passed, the program name behind it, and how the next screen is processed.
When the program has finished generating the session, you can run the session to execute the SAP transactions in it. You can either explicitly start and monitor a session or have the session run in the background processing system.
Unless session is processed, the data is not transferred to database table.
BDC_OPEN_GROUP
You create the session through program by BDC_OPEN_GROUP function.
Parameters to this function are:
User Name: User name
Group: Name of the session
Lock Date: The date on which you want to process the session.
Keep: This parameter is passed as X when you want to retain session after
processing it or to delete it after processing.
BDC_INSERT
This function creates the session & data is transferred to Session.
Parameters to this function are:
Tcode: Transaction Name
Dynprotab: BDC Data
BDC_CLOSE_GROUP
This function closes the BDC Group. No Parameters.
Some additional information for session processing
When the session is generated using the KEEP option within the BDC_OPEN_GROUP, the system always keeps the sessions in the queue, whether it has been processed successfully or not.
However, if the session is processed, you have to delete it manually. When session processing is completed successfully while KEEP option was not set, it will be removed automatically from the session queue. Log is not removed for that session.
If the batch-input session is terminated with errors, then it appears in the list of INCORRECT session and it can be processed again. To correct incorrect session, you can analyze the session. The Analysis function allows to determine which screen and value has produced the error. If you find small errors in data, you can correct them interactively, otherwise you need to modify batch input program, which has generated the session or many times even the data file.
CALL TRANSACTION
About CALL TRANSACTION
A technique similar to SESSION method, while batch input is a two-step procedure, Call Transaction does both steps online, one after the other. In this method, you call a transaction from your program by
Call transaction <tcode> using <BDCTAB>
Mode <A/N/E>
Update <S/A>
Messages into <MSGTAB>.
Parameter 1 is transaction code.
Parameter 2 is name of BDCTAB table.
Parameter 3 here you are specifying mode in which you execute transaction
A is all screen mode. All the screen of transaction are displayed.
N is no screen mode. No screen is displayed when you execute the transaction.
E is error screen. Only those screens are displayed wherein you have error record.
Parameter 4 here you are specifying update type by which database table is updated.
S is for Synchronous update in which if you change data of one table then all the related Tables gets updated. And sy-subrc is returned i.e., sy-subrc is returned for once and all.
A is for Asynchronous update. When you change data of one table, the sy-subrc is returned. And then updating of other affected tables takes place. So if system fails to update other tables, still sy-subrc returned is 0 (i.e., when first table gets updated).
Parameter 5 when you update database table, operation is either successful or unsuccessful or operation is successful with some warning. These messages are stored in internal table, which you specify along with MESSAGE statement. This internal table should be declared like BDCMSGCOLL, a structure available in ABAP/4. It contains the following fields:
1. Tcode: Transaction code
2. Dyname: Batch point module name
3. Dynumb: Batch input Dyn number
4. Msgtyp: Batch input message type (A/E/W/I/S)
5. Msgspra: Batch input Lang, id of message
6. Msgid: Message id
7. MsgvN: Message variables (N = 1 - 4)
For each entry, which is updated in database, table message is available in BDCMSGCOLL. As BDCMSGCOLL is structure, you need to declare a internal table which can contain multiple records (unlike structure).
Steps for CALL TRANSACTION method
1. Internal table for the data (structure similar to your local file)
2. BDCTAB like BDCDATA
3. UPLOAD or WS_UPLOAD function to upload the data from local file to itab. (Considering file is local file)
4. Loop at itab.
Populate BDCTAB table.
Call transaction <tcode> using <BDCTAB>
Mode <A/N/E>
Update <S/A>.
Refresh BDCTAB.
Endloop.
(To populate BDCTAB, You need to transfer each and every field)
The major differences between Session method and Call transaction are as follows:
SESSION METHOD CALL TRANSACTION
1. Data is not updated in database table unless Session is processed. Immediate updation in database table.
2. No sy-subrc is returned. Sy-subrc is returned.
3. Error log is created for error records. Errors need to be handled explicitly
4. Updation in database table is always synchronous Updation in database table can be synchronous Or Asynchronous.
Error Handling in CALL TRANSACTION
When Session Method updates the records in database table, error records are stored in the log file. In Call transaction there is no such log file available and error record is lost unless handled. Usually you need to give report of all the error records i.e., records which are not inserted or updated in the database table. This can be done by the following method:
Steps for the error handling in CALL TRANSACTION
1. Internal table for the data (structure similar to your local file)
2. BDCTAB like BDCDATA
3. Internal table BDCMSG like BDCMSGCOLL
4. Internal table similar to Ist internal table
(Third and fourth steps are for error handling)
5. UPLOAD or WS_UPLOAD function to upload the data from the local file to itab. (Considering file is local file)
6. Loop at itab.
Populate BDCTAB table.
Call transaction <tr.code> using <Bdctab>
Mode <A/N/E>
Update <S/A>
Messages <BDCMSG>.
Perform check.
Refresh BDCTAB.
Endloop.
7 Form check.
IF sy-subrc <> 0. (Call transaction returns the sy-subrc if updating is not successful).
Call function Format_message.
(This function is called to store the message given by system and to display it along with record)
Append itab2.
Display the record and message.
DIRECT INPUT
About Direct Input
In contrast to batch input, this technique does not create sessions, but stores the data directly. It does not simulate the online transaction. To enter the data into the corresponding database tables directly, the system calls a number of function modules that execute any necessary checks. In case of errors, the direct input technique provides a restart mechanism. However, to be able to activate the restart mechanism, direct input programs must be executed in the background only. Direct input checks the data thoroughly and then updates the database directly.
You can start a Direct Input program in two ways;
Start the program directly
This is the quickest way to see if the program works with your flat file. This option is possible with all direct input programs. If the program ends abnormally, you will not have any logs telling you what has or has not been posted. To minimize the chance of this happening, always use the check file option for the first run with your flat file. This allows you to detect format errors before transfer.
Starting the program via the DI administration transaction
This transaction restarts the processing, if the data transfer program aborts. Since DI document are immediately posted into the SAP D/B, the restart option prevents the duplicate document posting that occurs during a program restart (i.e., without adjusting your flat file).
Direct input is usually done for standard data like material master, FI accounting document, SD sales order and Classification for which SAP has provided standard programs.
First time you work with the Direct Input administration program, you will need to do some preparation before you can transfer data:
- Create variant
- Define job
- Start job
- Restart job
Common batch input errors
- The batch input BDCDATA structure tries to assign values to fields which do not exist in the current transaction screen.
- The screen in the BDCDATA structure does not match the right sequence, or an intermediate screen is missing.
- On exceptional occasions, the logic flow of batch input session does not exactly match that of manual online processing. Testing the sessions online can discover by this.
- The BDCDATA structure contains fields, which are longer than the actual definition.
- Authorization problems.
RECORDING A BATCH INPUT
A B recording allows you to record a R/3 transaction and generate a program that contains all screens and field information in the required BDC-DATA format.
You can either use SHDB transaction for recording or
SYSTEM ? SERVICES ? BATCH INPUT ? EDIT
And from here click recording.
Enter name for the recording.
(Dates are optional)
Click recording.
Enter transaction code.
Enter.
Click Save button.
You finally come to a screen where, you have all the information for each screen including BDC_OKCODE.
Click Get Transaction.
Return to BI.
Click overview.
Position the cursor on the just recorded entry and click generate program.
Enter program name.
Click enter
The program is generated for the particular transaction.
BACKGROUND PROCESSING
Need for Background processing
When a large volume of data is involved, usually all batch inputs are done in background.
The R/3 system includes functions that allow users to work non-interactively or offline. The background processing systems handle these functions.
Non-interactively means that instead of executing the ABAP/4 programs and waiting for an answer, user can submit those programs for execution at a more convenient planned time.
There are several reasons to submit programs for background execution.
The maximum time allowed for online execution should not exceed 300 seconds. User gets TIMEOUT error and an aborted transaction, if time for execution exceeds 300 seconds. To avoid these types of error, you can submit jobs for background processing.
You can use the system while your program is executing.
This does not mean that interactive or online work is not useful. Both type of processing have their own purposes. Online work is the most common one entering business data, displaying information, printing small reports, managing the system and so on. Background jobs are mainly used for the following tasks; to process large amount of data, to execute periodic jobs without human intervention, to run program at a more convenient, planned time other than during normal working hours i.e., Nights or weekends.
The transaction for background processing is SM36.
Or
Tools ? Administration ? Jobs ? Define jobs
Or
System ? services ? Jobs
Components of the background jobs
A job in Background processing is a series of steps that can be scheduled and step is a program for background processing.
Job name. Define the name of assigned to the job. It identifies the job. You can specify up to 32 characters for the name.
Job class. Indicates the type of background processing priority assigned to the job.
The job class determines the priority of a job. The background system admits three types of job classes: A B & C, which correspond to job priority.
Job steps. Parameters to be passed for this screen are as follows:
Program name.
Variant if it is report program
Start criteria for the job: Option available for this are as follows:
Immediate - allows you to start a job immediately.
Date/Time - allows you to start a job at a specific name.
After job - you can start a job after a particular job.
After event - allows you to start a job after a particular event.
At operation mode - allows you to start a job when the system switches to a particular operation mode.
Defining Background jobs
It is two step process: Firstly, you define the job and then release it.
When users define a job and save it, they are actually scheduling the report i.e., specifying the job components, the steps, the start time.
When users schedule program for background processing, they are instructing the system to execute an ABAP/4 report or an external program in the background. Scheduled jobs are not executed until they are released. When jobs are released, they are sent for execution to the background processing system at the specified start time. Both scheduling and releasing of jobs require authorizations.
HANDLING OF POP UP SCREEN IN BDC
Many times in transaction pop up screen appears and for this screen you dont pass any record but some indication to system telling it to proceed further. For example: The following screen
To handle such screen, system has provided a variable called BDC_CURSOR. You pass this variable to BDCDATA and process the screen.
Usually such screen appears in many transactions, in this case you are just passing information, that YES you want to save the information, that means YES should be clicked. So you are transferring this information to BDCDATA i.e., field name of YES which is usually SPOT_OPTION. Instead of BDC_OKCODE, you are passing BDC_CURSOR.
BDC_CURSOR is also used to place cursor on particular field.
A simple transaction where you are entering customer number on first screen and on next screen data is displayed for the particular customer number. Field, which we are changing here, are name and city. When you click on save, the changed record gets saved.
Prerequisite to write this BDC interface as indicated earlier is:
1. To find screen number
2. To find screen field names, type of the field and length of the field.
3. To find BDC_OKCODE for each screen
4. Create flat file.
generally Batch Input usually are used to transfer large amount of data. For example you are implementing a new SAP project, and of course you will need some data transfer from legacy system to SAP system.
CALL TRANSACTION is used especially for integration actions between two SAP systems or between different modules. Users sometimes wish to do something like that click a button or an item then SAP would inserts or changes data automatically. Here CALL TRANSACTION should be considered.
2. Transfer data for multiple transactions usually the Batch Input method is used.
check these sites for step by step process:
For BDC:
http://myweb.dal.ca/hchinni/sap/bdc_home.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/bdc&
http://www.sap-img.com/abap/learning-bdc-programming.htm
http://www.sapdevelopment.co.uk/bdc/bdchome.htm
http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm
http://help.sap.com/saphelp_47x200/helpdata/en/69/c250684ba111d189750000e8322d00/frameset.htm
http://www.sapbrain.com/TUTORIALS/TECHNICAL/BDC_tutorial.html
Check these link:
http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm
http://www.sap-img.com/abap/question-about-bdc-program.htm
http://www.itcserver.com/blog/2006/06/30/batch-input-vs-call-transaction/
http://www.planetsap.com/bdc_main_page.htm
call Transaction or session method ?
null

Why are the threads start and terminate randomly?

Hi there,
I got the program below. I am wondering why are the threads start and terminate randomly? Everytime, I run the program, it produces different results.
I know that these four threads have got same normal priority (should be 5), and under windows there is something called timeslice. Then these four threads rotate using this timeslice. How do we know what exactly the timeslice is in seconds? If the timeslice is fix, then why the results are ramdom?
Thanks in advance!
* To change this template, choose Tools | Templates
* and open the template in the editor.
package mythreadone;
* @author Administrator
public class MyThreadOne implements Runnable {
String tName;
Thread t;
MyThreadOne(String threadName) {
tName = threadName;
t = new Thread(this, tName);
t.start();
public void run() {
try {
System.out.println("Thread: " + tName);
Thread.sleep(2000);
} catch (InterruptedException e) {
System.out.println("Exception: Thread "
+ tName + " interrupted");
System.out.println("Terminating thread: " + tName);
public static void main(String args[]) {
// Why are the threads start and terminate randomly?
new MyThreadOne("1");
new MyThreadOne("2");
new MyThreadOne("3");
new MyThreadOne("4");
try {
Thread.sleep(10000);
// Thread.sleep(2000);
} catch (InterruptedException e) {
System.out.println(
"Exception: Thread main interrupted.");
System.out.println(
"Terminating thread: main thread.");
1. Firstly, I set in the main function:
Thread.sleep(10000);
and I run the program it gives:
Thread: 1
Thread: 4
Thread: 2
Thread: 3
Terminating thread: 1
Terminating thread: 3
Terminating thread: 4
Terminating thread: 2
Terminating thread: main thread.
BUILD SUCCESSFUL (total time: 10 seconds)
Run it again, it gives:
Thread: 2
Thread: 4
Thread: 3
Thread: 1
Terminating thread: 2
Terminating thread: 1
Terminating thread: 3
Terminating thread: 4
Terminating thread: main thread.
BUILD SUCCESSFUL (total time: 10 seconds)
And my question was why it outputs like this? It suppose to be:
Thread: 1
Thread: 2
Thread: 3
Thread: 4
Terminating thread: 1
Terminating thread: 2
Terminating thread: 3
Terminating thread: 4
Terminating thread: main thread.
BUILD SUCCESSFUL (total time: 10 seconds)
Why these four threads start and finish randomly each time I run the program? I use Windows, suppose there is a timeslice (i.e. 1 second), these threads have the same priority. Then the threads should start and finish in turn one by one. Am I right?
2. My second question is:
When I change the codes in the 'main' function into:
Thread.sleep(10000); -> Thread.sleep(2000);
it gives me the results like:
Thread: 1
Thread: 4
Thread: 3
Thread: 2
Terminating thread: main thread.
Terminating thread: 1
Terminating thread: 4
Terminating thread: 3
Terminating thread: 2
BUILD SUCCESSFUL (total time: 2 seconds)
Run it again:
Thread: 1
Thread: 2
Thread: 3
Thread: 4
Terminating thread: 3
Terminating thread: main thread.
Terminating thread: 4
Terminating thread: 2
Terminating thread: 1
BUILD SUCCESSFUL (total time: 2 seconds)
I tried several times. The main thread always terminates before or after the first child thread finished.
My question is why it doesn't output something like:
Thread: 1
Thread: 2
Thread: 3
Thread: 4
Terminating thread: 3
Terminating thread: 4
Terminating thread: 2
Terminating thread: main thread.
Terminating thread: 1
BUILD SUCCESSFUL (total time: 2 seconds)
or
Thread: 1
Thread: 2
Thread: 3
Thread: 4
Terminating thread: 3
Terminating thread: 4
Terminating thread: 2
Terminating thread: 1
Terminating thread: main thread.
BUILD SUCCESSFUL (total time: 2 seconds)

user13476736 wrote:
Yes, my machine has multi-core. Then you mean that if I got a one core machine the result should always be:
Thread: 1
Thread: 2
Thread: 3
Thread: 4
Terminating thread: 1
Terminating thread: 2
Terminating thread: 3
Terminating thread: 4
Terminating thread: main thread.
BUILD SUCCESSFUL (total time: 10 seconds)
???No.
>
How to explain my second quesiton then? Why the main thread always terminates before some of the child threads end? Thanks a lot.

What are the following Fields meant to contain...?

What info are the following Fields in iTunes meant to contain?
'Comments', 'Description', 'Category', 'Grouping'?
Thanks.

They're not meant to contain anything, so they may be blank. However, those fields are there for various purposes. For example, pick any song or Podcast in your Library:
Comments: this field can have a note about the song, Podcast etc. etc. Amazon use the Comments field to make a note of the Amazon ID they assign a song when they sell it to you. You can edit the Comments field if you wish, adding any note that you want, for your own purposes.
Description: is used by Podcasters. They enter a description of their Podcast, typically a little information about that particular show. This field for a song etc, can be found (and edited) on the Videos tab of the song, (even if it's not a video!). Not all Podcasters make use of this field and not usually used in songs.
Category: Used by iTunes Radio services, to identify the type of programming they offer. Also used by Podcasters. Not always used by either service and not usually used in songs.
Grouping: Ah! Now, this is a good and useful field. Suppose you want a song to be in two different genres. Well, that cannot be done. However, if you want one song with genre "Rock" to also be included with all your "70's Pop" genre, simply type Rock into the grouping field and then create a Smart Playlist which has the rules: Genre is 70's Pop and Grouping is Rock. This Smart Playlist will have all the "70's Pop" genre in it and any song that you have typed "Rock" into the Grouping field. It will not have any of the other Rock genre in the list.
Actually, a Smart Playlist can make use of any of the fields you have mentioned. So it's possible to create a Smart Playlist that picks out any song or Podcast etc. containing a particular word in the Description field and a different word in the Comments field.

What are the major risks buying used lenses ?

i just bought my first dslr, and i was wondering what are the major risks buying used lenses ?

You need to be able to inspect and test the lens.
Look for obvious signs of physical damage, drops, etc. (cracks, dents, etc.) A lens normally will get some signs of wear but as it's a used lens, you expect *some* wear... you're really looking for signs of damage.
Remove both front and rear caps. Look through the lens into a bright no-contrast background (a white wall, a blue sky, etc.) and check the optics. You're looking for signs of mold growth or damage to coatings. Minor dust on internal optics wont impact the lens performance... so while you wouldn't want major amounts of dirt... don't worry too much about minor bits of dust (I've actually helped prove this to someone by clipping a 3M PostIt note down to a tiny 1/4" x 1/4" size and sticking it on the front glass. Take a photo... nothing shows in the photo (even a piece of "dirt" that big wont show because the camera cannot focus on anything that close to the lens.)
Rotate the focus ring from end to end. You should feel a smooth and consistent amount of friction as you rotate the focus ring. There should be no rough spots. Listen to the lens as you do this... there should be no grinding noises.
Do the same with the zoom ring but in addition to checking for smooth consistent performance (no sticky or rough spots) you're also checking to make sure nothing seems excessively worn (nothing wobbles loose... very heavily used lenses can do that after enough wear.)
Connect the lens to the camera and make sure the camera can completely operate the auto-focus motors without a problem and/or if it's an image stabilized lens that the IS components are working.
Set the camera to max aperture (e.g. f/22, f/32.. depending on the lens) and press your camera's "depth of field preview" button (if you don't know which button is your DOF preview, check your manual. Canon tends to move that one around a bit but it's almost always on the front side of the camera near the lens mount.) You want to press and release it a few times. This will cause the lens aperture blades to stop down to the aperture you set. Release... do this while watching the lens. You should see the aperture blades move in and out (well... they snap in and out very quickly). You want to make sure it works ok, the camera gets no error codes, and there's no signs that anything is sticking.
And then there is the focus test...
Focus the camera preferably at a FLAT surface that has lots of detail.... such as the brick wall of a building. Make sure the camera is level and that the camera's focal plane is parallel to the plane of the wall. Take a test photo at low f-stop and inspect. You're checking to verify that the focus works and that the focus is reasonable across the image. As you inspect from left ot right and top to bottom you are looking to make sure the focus is more or less equal (if the right side of the image is focused... but the left side of the image is soft... it would indicate that lens elements are skewed (lens isn't collimated). It's difficult for a lens to get into this situation unless it was dropped and you'd probably see signs of damage.
Tim Campbell
5D II, 5D III, 60Da

Can I rewrite the following query without using Row_number() function ??!!

Hello every one, can I rewrite the following query without using the 'ROW_NUMBER() OVER ' part.
The query is supposed to pull out the records whose CODE is not NULL and has most
recent date for UPDATE_DATE . The reason I wanted to do this is, When I embed this query
in between many other queries along with JOINs, My oracle server is unable to execute. So, I thought
its better to supplant 'ROW_NUMBER() OVER ' logic with something else and try it. .
SELECT a.* FROM
(SELECT b.*, ROW_NUMBER() OVER (PARTITION BY b.PIDM
ORDER BY b.UPDATE_DATE DESC) AS Rno
FROM
SELECT *
FROM SHYNCRO WHERE CODE IS NOT NULL
)b
)a
WHERE a.Rno = 1

Hi,
You didn't write over 150 lines of code and then start testing it, did you?
Don't.
Take baby steps. Write as little as pssiblem test that. Debug and test again until you have something that does exactly what you want it to do.
When you have somehting that works perfectly, take one baby step. Add a tiny amount of code, maybe 1 or 2 lines more, and test again.
When you do get an error, or wrong results, you'll have a much better idea of where the problem is. also, you won't be building code on a flimsy foundation.
If you need help, post the last working version and the new version with the error. Explain what you're trying to do in the new version.
The error message indicates line 133. It looks like line 133 of your code is blank. Does your front end allow completely blank lines in the middle of a query? SQL*Plus doesn't by default; you have to say
SET SQLBLANKLINES ONto have a completely blank line in SQL*Plus. (However, lines containing nothing but at commnet are always allowed.)
You may have noticed that this site normally doesn't display multiple spaces in a row.
Whenever you post formatted text (such as indented code) on this site, type these 6 characters:
\(small letters only, inside curly brackets) before and after each section of formatted text, to preserve spacing.
The 4 people who posted small code fragments for you to read all did this. It would be so much easier for people to read your humongeous query if it were formatted.

Why are the following processes always using lots of memory?

Similar Messages

Maybe you are looking for