EXPLAIN doesn't work in MySQL

I'm having some issues trying to get an EXPLAIN plan from an MySQL database, using Oracle SQL Developer. One, the EXPLAIN plan button is greyed out. I can understand that maybe the functionality isn't quite implemented for displaying it in the same format as Oracle. However, if I try to do a direct command of "EXPLAIN SELECT * FROM table". I get the following:
EXPLAIN SELECT succeeded.
Nothing else. In a normal MySQL client, this would actually give me the standard table output. Why doesn't OSD figure this out and just pretend it's a query, like any standard SELECT statement? Are there any hidden preference options to fix this?
I am running OSD v2.1.0.63.73.

Sorry, but the tool is mainly focussed in providing a migration platform to Oracle, so a lot of the cool stuff is Oracle only.
You can request this at the SQL Developer Exchange though, so other users can vote and add weight for possible future implementation.
And if MySQL uses a PLAN_TABLE as Oracle does, you can SELECT from that table yourself after issuing the EXPLAIN.
Have fun,
K.

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Restore mysql doesn't work with Runtime?

hi all
iam trying to restore a backup of mysql database,i took the backup using mysqldump.
iam using a correct syntax of restoring and i already tested it in the command line and it worked correctly
mysql -u root new_db < f:\backup.sql
the problem is when i try to use the same command with Runtime it doesn't work
here's my code:
try{ String command="c:\\wamp\\mysql\\bin\\mysql -u root new_db < f:\\backup.sql"; Runtime.getRuntime().exec(command); }catch(Exception e){e.printStackTrace();}
and i already read the recommended article
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html?page=1
but i don't know if there's something missing in my code
hope to find help
thanks in advance

i implemented the backup part after modifications and it worked correclty:
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                 }catch(Exception e){e.printStackTrace();}but when i try to implement the restore part as above it doesn't work
could anyone tell me please where's the error?
try{
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         System.out.println(file_path);
         File backupFile = new File(file_path);
         FileWriter fw = new FileWriter(backupFile);
         Runtime runtime = Runtime.getRuntime();
         String command="c:/wamp/mysql/bin/mysql -u root lib < "+file_path;
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           String line;
            while( (line=br.readLine()) != null ) {
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Powerdns with MySQL doesn't work

I recently switched from ubuntu to Arch and I love it. However I have problems with PowerDNS running with MySQL database. When I set pdns.conf to
launch=gmysql
gmysql-host=127.0.0.1
gmysql-user=user
gmysql-password=pass
gmysql-dbname=database_name
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Oct 22 22:43:34 Archlinux pdns[3337]: Caught an exception instantiating a backend, cleaning up
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Best regards!
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It works! Thank you! Thank you! Thank you!
I wasted so many hours combating this...
I owe you a beer byte! Thx again!

Within Music Library can anyone please explain why when I select the option to sort 'Album by Artist' a number of tracks are being treated as separate albums? How can I correct this? I have tried to 'drag and drop' but that doesn't work.

Within music Library can anyone please explain why after I select the option to sort 'Album by Artist' a number of tracks are being treated as separate albums? How can I fix this? I have tried to manually correct by 'drag and drop' individual tracks but that doesn't work. My music library includes a number of repeat album artwork images simply because not all tracks are being listed under the one album making my library more difficult to use than it should. Any advise would be appreciated.

See Grouping tracks into albums.
tt2

[SOLVED]MySQL doesn't work anymore

It starts fine:
[root@server ~]# /etc/rc.d/mysqld restart
:: Stopping MySQL [DONE]
:: Starting MySQL [DONE]
[root@server ~]#
BUT, it no longer works:
http://doorknob60.is-a-geek.org/wiki
http://doorknob60.is-a-geek.org/wordpress
Both give errors, as well as Phpmyadmin. I can't seem to find any relevant log files either. I tried some random stuff, but nothing seems to work. I just got MySQL set up on this box about 2 days ago, then an update comes around and messes it up again
Last edited by doorknob60 (2009-11-18 23:57:58)

Yes, I did read that. Even after messing with config files it doesn't work. And PHP config? I'll assume that's a typo. What all do you have to change? Everything looks fine on my current my.cnf file, I think at least.
# mysql config file for medium systems.
# This is for a system with little memory (32M - 64M) where MySQL plays
# a important part and systems up to 128M where MySQL is used together with
# other programs (like a web server)
# One can in this file use all long options that the program supports.
# If you want to know which options a program support, run the program
# with --help option.
# The following options will be passed to all MySQL clients
[client]
password = ~password removed~
port = 3306
socket = /var/run/mysqld/mysqld.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /var/run/mysqld/mysqld.sock
datadir = /var/lib/mysql
pid_file = /var/run/mysqld/mysqld.pid
skip-locking
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 16K
myisam_sort_buffer_size = 8M
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
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server-id = 1
# Replication Slave (comment out master section to use this)
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#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql
#innodb_log_arch_dir = /var/lib/mysql
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[mysqldump]
quick
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#safe-updates
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sort_buffer_size = 20M
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interactive-timeout
Also, is there some place I'm missing when looking for error logs? I'm looking in /var/log and see nothing related to mysql
Last edited by doorknob60 (2009-11-18 23:28:47)

Since Lion installation the remote control first generation, doesn't work as usually. On Leopard when I pushed the menu button, it opened a menu that showed music, films, photo. Now it doesn't work anymore. Is there anyone to explain me why this happen?

Since Lion installation the remote control first generation, doesn't work as usually. On Leopard when I pushed the menu button, it opened a menu that showed music, films, photo. Now it doesn't work anymore. Is there anyone to explain me why this happen? Thank you.

Sadly Snow Leopard was the last OS X to have Front Row and it is no longer offered in Lion or Mountain.
see > Farewell Front Row | Macworld
If you want, you can get it back with some tweaking.
see > Get Front Row for Mac OS X 10.7 Lion
or > Use Front Row In OS X Lion
Also note: that your remote should still be working for waking the Mac, volume control and iTunes...? If it is not, let us know for help with it.

Mobile data doesn't work and I can't access the front camera.

Hi, I received my new Xperia Z3 Compact in white just over a week ago and unfortunately I have few unresolved issued with it which kind of spoils the experience of owning a new phone.
I just switched from a number of Iphones and Xperia was the handset that really impressed me.
I couldn't see the point of getting an overpriced Iphone with a limited storage capability.
Unfortunately my Xperia Z3c has some issues;
- I can't get the front camera work
- I can get my internet only through Wi-Fi and my unlimited 3G data doesn't work at all (T-Mobile U.K)
- Three Swipe Gesture doesn’t appear to be working as it should on any Android device (I'm told).
So I am not a very happy user at the moment and slowly starting to miss the Iphone.

Hi casson50ml,
Welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
Sorry to hear about these issues, I would first suggest clearing the data for the camera.
Menu > settings > Apps > All > Camera > Clear Data
Once done try using the device.
In regards to the Internet, try performing an Internet settings download.
Menu > Settings > More > Internet Settings > Accept Disclaimer > Choose Network.
Now try using the network data on the handset.
Can you explain more about the 3 Finger Gesture issue?
- Official Sony Xperia Support Staff
If you're new to our forums make sure that you have read our Discussion guidelines.
If you want to get in touch with the local support team for your country please visit our contact page.

Sudo doesn't work anymore, not permitting me to enter password

Since two days, sudo doesn't work for me anymore. When I do
sudo any_command
I get:
Sorry, try again.
Sorry, try again.
Sorry, try again.
sudo: 3 incorrect password attempts
I updated my server two days ago, but I cannot say whether it's related to my problem.
Here's the result of doing
tail /var/log/sudolog
as root (su works):
Oct 13 12:35:33 : kalasusi : 3 incorrect password attempts ; TTY=pts/2 ; PWD=/etc; USER=root ; COMMAND=/bin/ls
Here's the result of doing
tail /var/log/auth.log
as root (the last new lines after trying sudo again with my normal user):
Oct 13 14:52:59 myserver sudo: pam_unix(sudo:auth): authentication failure; logname=kalasusi uid=0 euid=0 tty=/dev/pts/1 ruser=kalasusi rhost= user=kalasusi
Oct 13 14:53:05 myserver sudo: kalasusi : 3 incorrect password attempts ; TTY=pts/1 ; PWD=/home/kalasusi ; USER=root ; COMMAND=/bin/ls
For some background info, the sudo troubleshooting guide identifies such a problem (the third Q&A):
Q) Sudo never gives me a chance to enter a password using PAM, it just
says 'Sorry, try again.' three times and exits.
A) You didn't setup PAM to work with sudo. On Redhat Linux or Fedora
Core this generally means installing sample.pam as /etc/pam.d/sudo.
See the sample.pam file for hints on what to use for other Linux
systems.
The only problem is that I didn't change anything from the Arch stock configuration of /etc/pam.d/sudo, and it used to work. Here's the result of
cat /etc/pam.d/sudo
on my system:
#%PAM-1.0
auth required pam_unix.so
auth required pam_nologin.so
Something else that comes into my mind that might be connected with the problem is that at some point while doing maintenance on the server, I received the following error:
Authentication token manipulation error.
Unfortunately I don't remember in what context it was or whether the problem started afterwards. I believe though the problem is either that or the update, because those are the two extraordinary things that happened on the server since the problem started.
Anyone have any ideas? Thanks in advance!
Last edited by kalasusi (2010-10-13 23:20:14)

[2010-10-11 22:08] Running 'pacman -Syu'
[2010-10-11 22:08] synchronizing package lists
[2010-10-11 22:10] starting full system upgrade
[2010-10-11 22:12] Generating locales...
[2010-10-11 22:12] en_US.UTF-8... done
[2010-10-11 22:12] en_US.ISO-8859-1... done
[2010-10-11 22:12] Generation complete.
[2010-10-11 22:12] upgraded glibc (2.12.1-1 -> 2.12.1-2)
[2010-10-11 22:12] upgraded binutils (2.20.1-3 -> 2.20.1-4)
[2010-10-11 22:12] upgraded libmysqlclient (5.1.50-1 -> 5.1.51-1)
[2010-10-11 22:12] upgraded logrotate (3.7.8-1 -> 3.7.9-1)
[2010-10-11 22:12] upgraded mysql-clients (5.1.50-1 -> 5.1.51-1)
[2010-10-11 22:13] upgraded mysql (5.1.50-1 -> 5.1.51-1)
[2010-10-11 22:13] upgraded php (5.3.3-1 -> 5.3.3-2)
[2010-10-11 22:13] upgraded php-cgi (5.3.3-1 -> 5.3.3-2)
[2010-10-11 22:13] upgraded php-gd (5.3.3-1 -> 5.3.3-2)
[2010-10-11 22:13] upgraded php-mcrypt (5.3.3-1 -> 5.3.3-2)
[2010-10-11 14:19] Running 'pacman -S apache'
[2010-10-11 14:21] installed apr (1.4.2-1)
[2010-10-11 14:21] installed unixodbc (2.3.0-1)
[2010-10-11 14:21] installed apr-util (1.3.10-1)
[2010-10-11 14:21] installed apache (2.2.16-1)
[2010-10-11 14:28] Running 'pacman -S php-apache'
[2010-10-11 14:28] installed php-apache (5.3.3-2)
[2010-10-12 19:46] Running 'pacman -Rns php-apache'
[2010-10-12 19:48] removed php-apache (5.3.3-2)
[2010-10-12 19:51] Running 'pacman -Rns apache'
[2010-10-12 19:51] removed apache (2.2.16-1)
[2010-10-12 19:51] removed apr-util (1.3.10-1)
[2010-10-12 19:51] removed unixodbc (2.3.0-1)
[2010-10-12 19:51] removed apr (1.4.2-1)
[2010-10-12 19:52] Running 'pacman -S nginx'
[2010-10-12 19:52] installed nginx (0.8.52-2)
[2010-10-12 20:01] Running 'pacman -S php-fpm'
[2010-10-12 20:01] installed libevent (1.4.14b-1)
[2010-10-12 20:01] installed php-fpm (5.3.3-2)
[2010-10-12 13:45] Running 'pacman -Rns nginx'
[2010-10-12 13:45] removed nginx (0.8.52-2)
[2010-10-12 13:46] Running 'pacman -Rns php-fpm'
[2010-10-12 13:46] removed php-fpm (5.3.3-2)
[2010-10-12 13:46] removed libevent (1.4.14b-1)
As you can see, I installed (and removed) apache and nginx, as I was testing their performance. I don't think it's related to this issue, but I'm adding this here for the sake of completeness.
Last edited by kalasusi (2010-10-13 23:26:13)

Why Adobe Flash Player11 doesn't work in IE?

I don't want sending messages. Just make the Player work in IE. That's all I want!

I don't know what "doesn't work" means; please explain.
Also check
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http://forums.adobe.com/thread/867968

On any page that I have to log in Firefox stops responding and has to shut down. I've tried resetting it and it still doesn't work.

I've been having this problem for a while now and I can't seem to fix it. Any time I log into any page, Firefox says not responding and I have to restart it. I have to run all of firefox in safe mode if I log out of my email or facebook. I've tried resetting FF and it still doesn't work.

''' "I have to run all of firefox in safe mode if I log out of my email or facebook. " '''
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LVOOP "call parent method" doesn't work when used in sibling VI

It seems to me that the "call parent method" doesn't work properly according to the description given in the LabVIEW help.
I have two basic OOP functions I am doing examples for. I can get one to work easily and the other one is impossible.
Background
There are 3 basic situations in which you could use the "call parent method"
You are calling the parent VI (or method) of a child VI from within the child VI
You are calling the parent VI (or method) of a child VI from within a sibling VI
You are calling the parent VI (or method) of a child VI from a different class/object.
From the LabVIEW help system for "call parent method":
Calls the nearest ancestor implementation of a class method. You can use the Call Parent Method node only on the block diagram of a member VI that belongs to a class that inherits member VIs from an ancestor class. The child member VI must be a dynamic dispatching member VI and have the same name as the ancestor member VI
From my reading of that it means situation 3 is not supported but 1 & 2 should be.
Unfortunately only Situation 1 works in LabVIEW 2012.
Here is what I want
And this is what I actually get
What this means is that I can perform a classic "Extend Method" where a child VI will use the parent's implementation to augment it's functions BUT I cannot perform a "Revert Method" where I call the parent method's implementation rather than the one that belongs to the object.
If you want a picture
Any time I try and make operation2 the VI with the "call parent method" it shows up for about 1/2 sec and then turns into operation.
So there are only 3 possibilities I can see
Bug
Neither situation 2 or 3 are intended to work (see above) and the help is misleading
I just don't know what I am doing (and I am willing to accept this if someone can explain it to me)
The downside is that if situation 2 above doesn't work it does make the "call parent node" much less usefull AND it's usage/application just doesn't make sense. You cannot just drop the "call parent node" on a diagram, it only works if you have an existing VI and you perform a replace. If you can only perform situation 1 (see above) then you should just drop the "call parent node" and it picks up the correct VI as there is only 1 option. Basically if situation 2 is not intended to work then the way you apply "call parent method" doesn't make sense.
Attachements:
For the really keen I have included 2 zip files
One is the "Revert Method labVIEW project" which is of course not working properly because it wants to "call parent method" on operation not operation2
The other zip file is all pictures with a PIN for both "Revert Method" and "Extend Method" so you can see the subtle but important differences and pictrures of the relavant block diagrams including what NI suggested to me as the original fix for this problem but wasn't (they were suggesting I implement Extend Method).
If you are wondering where I got the names, concepts and PIN diagrams from see:
Elemental Design Patterns
By: Jason McColm Smith
Publisher: Addison-Wesley Professional
Pub. Date: March 28, 2012
Print ISBN-10: 0-321-71192-0
Print ISBN-13: 978-0-321-71192-2
Web ISBN-10: 0-321-71255-2
Web ISBN-13: 978-0-321-71255-4
All the best
David
Attachments:
Call parent node fault.zip ‏356 KB
Call parent node fault.zip ‏356 KB

Hi tst,
Thankyou for your reply. Can you have a look at my comments below on the points you make.
1) Have to disagree on that one. The help is unfortunately not clear. The part you quote in your reply only indicates that the VI you are applying "Call Parent Node" to must be dynamic dispatch. There is nowhere in the help it actually states that the call parent node applies to the VI of the block diagram it is placed into. Basically case 2 in my example fulfills all that the help file requires of it. The dynamic dispatch VI's operation are part of a class that inherits from a given ancestor. Operation 2 for Reverted behaviour is a child VI that is dynamic dispatch and has the same name as the ancestor VI (operation2). The help is missing one important piece of information and should be corrected.
2) True it does work this way. I was trying to build case 2 and had not yet built my ancestor DD for operation so the function dropped but wasn't associated with any VI. I was able to do this via a replace (obviously once the ancestor Vi was built) so this one is just bad operator
3) Keep in mind this is an example not my end goal. I have a child implementation because this is a case where I am trying to do a "reverse override" if you like.
3a) The point of the example is to override an objects method (operation2) with it's parent's method NOT it's own. The reason there is a child implementation with specific code is to prove that the parent method is called not the one that relates to the object (child's VI). If I start having to put case structures into the child VI I make the child VI have to determine which code to execute. The point of Revert method is to take this function out of the method that is doing the work. (Single Use Principal and encapsulation)
3b) The VI I am calling is a Dynamic Dispatch VI. That means if I drop the superclass's VI onto the child's block diagram it will become the child's implementation. Basically I can't use Dynamic Dispatch in this case at all. It would have to be static. That then means I have to put in additional logic unless there is some way to force a VI to use a particular version of a DD VI (which I can't seem to find).
Additional Background
One of the uses for "Revert Method" is in versioning.
I have a parent Version1 implementation of something and a child Version2. The child uses Version2 BUT if it fails the error trapping performs a call to Version1.
LabVIEW has the possibility of handling the scenario but only if both Case 1 and Case 2 work. It would actually be more useful if all 3 cases worked.
The advantage of the call parent method moving one up the tree means I don't have the track what my current object is and choose from a possible list, if, for example the hierarchy is maybe 5 levels deep. (so V4 calls V3 with a simple application of "call parent method" rather than doing additional plumbing with case structures that require care and feeding). Basically the sort of thing OOP is meant to help reduce. Anything that doesn't allow case 2 or 3 means you have to work around the limitation from a software design perspective.
If at the end of the day Case 2 and case 3 don't and won't ever work then the help file entry needs to be fixed.
All the best
David

I have different account ID's with my iphone and computer. I would like to standardise both to just the one. One of the ID's doesn't work, when I tried to list the second email with the preferred one a message telling me that this email is already in

I have different account ID's with my iphone and computer.
I would like to standardize both to just the one.
One of the ID's doesn't work, when I tried to list this second email with the preferred one a message telling me that this email is already in use pops up.. yes it is, with me??
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If the email address you want to use is being used as the primary email address on a different ID you have to manage that ID and change it to a different primary email address. This explains how: Change your Apple ID - Apple Support.
If it is being used as an alternate or rescue address on a different ID, you manage the ID and either remove it or change it to a different email address. This explains how: Manage your Apple ID primary, rescue, alternate, and notification email addresses - Apple Support.

My mac has10.5.8 and should be compatible with new HP officejet pro 8600. I can't get it to install for wireless, nor to work with USB cable. Have tried downloading HP install directly from HP and it still doesn't work.

I just bought a new HP OfficeJet Pro 8600 printer. I have been unable to download the installation for wireless connection even though have had the assistance of Costco tech, HP tech and some advice from Apple. Because the system is MacOs 10.5.8 the error says it is incompatible, even though the product lists compatiblilty with 10.5, 10.6. I was advised 1 option might be to obtain Snow Leopard for installation, however am somewhat reluctant as the bo states 10.5 should work and Snow Leopard is 10.6, which is also listed as compatible. I am unable to get the printer to work even with USB cable. Too much time spent on this and I hate to start over with another printer because I'm afraid I might have the same trouble. Is Snow Leopard something I should get anyway? Help!

Snow Leopard has more compatible Java.
https://discussions.apple.com/docs/DOC-2455
explains more about upgrading to Snow Leopard.
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HT204291 AirPlay Mirroring doesn't work after last update

I have a late 2011 Macbook Pro (running mountain lion), an iPhone 4s, and an Apple TV (3d gen). My iPhone and Apple TV work fine together. I can stream video and music without difficulty. My Macbook can stream audio, but since the last update to 5.1.1 I can't mirror my desktop or run video from my Macbook to the Apple TV. The option is there, but the TV screen only changes colors and garbles some text. It mostly looks like a pink and green abstract painting.
Short of restoring the Apple TV, is there anything else I can do?

Thanks Brian. I tried using the ethernet cord and it still only works for one account on my macbook - the account that's not signed into the Apple TV.
Wifi versus ethernet doesn't explain why it worked well before the update, but not afterward. Or why it works when I turn off photostream.

Dynamic adding of components (doesn't work when programmatically)

Hi, I don't understand, why this doesn't work. I'll explain it on this example:
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class NewFXMain extends Application {
    Group root;
    public static void main(String[] args) {
        Application.launch(NewFXMain.class, args);
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World");
        root = new Group();
        Scene scene = new Scene(root, 300, 250, Color.LIGHTGREEN);
        Button btn = new Button();
        btn.setLayoutX(100);
        btn.setLayoutY(80);
        btn.setText("Add button now");
        btn.setOnAction(new EventHandler<ActionEvent>() {
            public void handle(ActionEvent event) {
                addButton();
        root.getChildren().add(btn);
        primaryStage.setScene(scene);
        primaryStage.setVisible(true);
        System.err.println("Number of buttons before: "+root.getChildren().size());
        ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(1);
        executor.schedule(new MyTask(), 5, TimeUnit.SECONDS);
    private void addButton() {
        System.err.println("Button adding");
        root.getChildren().add(new Button("YEAH"));
        System.err.println("Number of buttons after: "+root.getChildren().size());
    class MyTask implements Runnable {
        public void run() {
            addButton();
}There are two ways how a new button can be added. Either by clicking on existing button or programmatically by the program itself after 5 seconds.
If you add it by button, there is no problem. The error print is:
Number of buttons before: 1
Button adding
Number of buttons after: 2
But if you just wait, then the error print is:
Number of buttons before: 1
Button adding
and no button is added. In fact, the error printing after the adding isn't performed either.
I'd like to ask if there is some solution for this because I'd love to do some changes by schedulers. Thx
Edited by: 876949 on 14.8.2011 9:09
Edited by: 876949 on 14.8.2011 9:11

No, these are not error messages, they are just for purpose of example. Here it doesn't matter whether err or out... (yes, 'out' would be better ;)
But thanx, it's working. By the way, I am creating scheduler for task lists. They are supposed to be printed dynamically in specific time (or periodically). For example: at 5 o'clock I need to print 5 items of some list and every 3 hours I need to print 3 items of another list etc. - so it's quite dynamic with regard to component adding (No, I don't want to use some sort of ListView, I want interactive printing: one item on screen at a moment). I'll try to work your solution into my code.
Edit: So either it's not possible to use this for the purpose of my app or it will be really cumbersome. Maybe it would be easier to draw some rectangles with mouse listeners...
Edit: So I finally got around it. In the end, I won't use dynamic adding as intended. It's working and that's important.
Edited by: 876949 on 14.8.2011 12:48
Edited by: 876949 on 15.8.2011 5:21

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