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• Ubuntu xrandr rotate issue

  - by user83544

  I've just bought a second monitor for my PC which happens to be a pivot monitor. I've already read lots of forums related to my problem but haven't come across a solution - I have the same symptoms as dozens of posts but no matter whatever I try it just doesn't work. I've already changed the xorg.conf file and added in the device section just under Driver "nvidia" the following for my second monitor: Option "RandRRotation" "on" When I save and reboot I try to rotate my screen with the nvidia X server settings by choosing the second monitor and clicking either "left" or "right" for the rotation. It immediately exits the nvidia settings window and does nothing. I tried within the terminal by typing: xrandr -o right I get the following error: X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 154 (RANDR) Minor opcode of failed request: 2 (RRSetScreenConfig) Serial number of failed request: 14 Current serial number in output stream: 14 I actually manage to rotate it with Option "Rotate" "CCW" instead of "RandRRotation". The problem with this solution is that you get the second monitor in the right position, but any window you open on that screen is practically unchangeable. You can't change the size nor move it, making it useless for reading PDFs, which is the main reason why I bought this second screen to help me write my thesis. Any help is really appreciated. sudo lshw -c video hiram@hiram-linux:~$ sudo lshw -c video *-display description: VGA compatible controller product: nVidia Corporation vendor: nVidia Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:16 memory:f8000000-f9ffffff memory:d8000000-dfffffff memory:d4000000-d7ffffff ioport:dc00(size=12 memory:fbd80000-fbdfffff

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• Create account for service

  - by Andy

  I am configuring a new server. The server is running Hudson that is going to copy some files from this server to another. The other server is a virtual machine. Both running Windows Server 2012. Hudson is started on server A with log on as "Local System". When I come to the copy phase it says "Access denied". Changing the log on to "Administrator" works. However, I guess this is bad. I do not have much experience with user management. I tried to create a own hudson account on both servers A and B. I tried to log on as hudson account in the service-management but it doesn't start. How would you create an account for this particular service that has access to the shared folder on server B and can be used to start the service on server A? I guess I need two accounts with same username and password on server A and server B? The folder on Server B is shared with everyone and the guest account is enabled.

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• Configure Apache + Passenger to serve static files from different directory

  - by Rory Fitzpatrick

  I'm trying to setup Apache and Passenger to serve a Rails app. However, I also need it to serve static files from a directory other than /public and give precedence to these static files over anything in the Rails app. The Rails app is in /home/user/apps/testapp and the static files in /home/user/public_html. For various reasons the static files cannot simply be moved to the Rails public folder. Also note that the root http://domain.com/ should be served by the index.html file in the public_html folder. Here is the config I'm using: <VirtualHost *:80> ServerName domain.com DocumentRoot /home/user/apps/testapp/public RewriteEngine On RewriteCond /home/user/public_html/%{REQUEST_FILENAME} -f RewriteCond /home/user/public_html/%{REQUEST_FILENAME} -d RewriteRule ^/(.*)$ /home/user/public_html/$1 [L] </VirtualHost> This serves the Rails application fine but gives 404 for any static content from public_html. I have also tried a configuration that uses DocumentRoot /home/user/public_html but this doesn't serve the Rails app at all, presumably because Passenger doesn't know to process the request. Interestingly, if I change the conditions to !-f and !-d and the rewrite rule to redirecto to another domain, it works as expected (e.g. http://domain.com/doesnt_exist gets redirected to http://otherdomain.com/doesnt_exist) How can I configure Apache to serve static files like this, but allow all other requests to continue to Passenger?

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• Windows Explorer and UAC: run elevated

  - by syneticon-dj

  I am profoundly annoyed by UAC and switch it off for my admin user wherever I can. Yet, there are situations where I can't - especially if those are machines not under my continuous administration. In this case, I am always challenged with the task of traversing directories using my administrative user via the Windows Explorer where regular users do not have "read" permissions. The possible two approaches to this problem so far: change the ACLs to the directory in question to include my user (Windows conveniently offers the Continue button in the "You don't currently have permissions to access this folder" dialog. This obviously sucks since more often than not I do not want to change ACLs but just look into the folder's contents use an elevated cmd.exe prompt along with a bunch of command line utilities - this usually takes a lot of time when browsing through large and / or complex directory structures What I would love to see would be a way to run Windows Explorer in elevated mode. I have yet to find out how to do so. But other suggestions solving this problem in an unobtrusive way without changing the entire system's configuration (and preferably without the need for downloading / installing anything) are very welcome, too. I have seen this post with a suggestion for altering HKCR - interesting, but it changes the behavior for all users, which I am not allowed to do in most situations. Also, some folks have suggested using UNC paths to access the folders - unfortunately this does not work when accessing the same machine (i.e. \\localhost\c$\path) as the "Administrators" group membership is still stripped from the token and a re-authentication (and thus the creation of a new token) would not happen when accessing localhost.

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• Mounted NFS directory not writable by Apache / PHP

  - by phpfour

  Need some help here with NFS. Here's what I have (all servers running CentOS 5.6 with SELinux): 172.17.20.1 - Primary server with static IP. Varnish redirects requests to the web servers. 172.17.20.2 - Web server 1 172.17.20.3 - Web server 2 The application residing on the web servers is running Drupal and I need both of them to share the same files directory. I have created a folder in 172.17.20.1 called /var/nfs with root user. Here is my /etc/exports content: /var/nfs 172.17.20.2(rw,sync,no_root_squash) 172.17.20.3(rw,sync,no_root_squash) On both the web servers (172.17.20.2/3), I have it mounted like below: [root@web2 ~]# mount ... 172.17.20.1:/var/nfs on /mnt/nfs/var/nfs type nfs (rw,sync,hard,intr,addr=172.17.20.1) On all the servers, I've added the user apache to the root group to get the desired write access: [root@main ~]# cat /etc/group root:x:0:root,apache .... .... apache:x:48: [root@web1 ~]# cat /etc/group root:x:0:root,apache .... .... apache:x:48: Despite all this, when I try to write files into the /mnt/nfs/var/nfs folder from Drupal/PHP, it cannot write to it. I even tried with a simple PHP upload script but it doesn't work, so the problem is not with Drupal. Any help you guys can do is much appreciated. I've spent hours and hours with it, without any success :( Thanks in advance.

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• Reducing both pagfile.sys and hiberfil.sys in Windows 7

  - by greenber

  I recently used Defraggler to consolidate my free space areas on my D: drive preparatory to using Disk Manager to break my drive into two areas, one as my "data area" for Windows 7 (normally on my C: drive) and to experiment around with Windows 8. The Defraggler program works so well I ran it on my C: drive and I ended up with a lot of free space both on my C: drive and my D: drive. I was very happy. And then I woke up the next day and I've got virtually no free space left, something like 8 MB on my C: drive and about 3 GB on my D: drive. I then ran Wintree (which gives a nifty graphical representation of disk usage) and found I had a large page file and a large hiberfil. So I temporarily turned off hibernate and reduced the page file size to 2000megabytes and then rebooted so that both would take effect. It had no effect on the C: drive or the D: drive. That makes no sense to me. What caused the free space on each drive to disappear, why doesn't the page file size being reduced and the hibernate file being turned off free up disk space to either the C: or the D: drive? Would it make sense to delete the two files in question and, if so, how do I go about doing that? Safe mode? Thanks. Ross

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• Apache: Isn't chmod 755 enough to set up symlink or alias on Apache httpd on Mac OS 10.5?

  - by eed3si9n

  On my Mac OS 10.5 machine, I would like to set up a subfolder of ~/Documents like ~/Documents/foo/html to be http://localhost/foo. The first thing I thought of doing is using Alias as follows: Alias /foo /Users/someone/Documents/foo/html <Directory "/Users/someone/Documents/foo/html"> Options Indexes FollowSymLinks MultiViews Order allow,deny Allow from all </Directory> This got me 403 Forbidden. In the error_log I got: [error] [client ::1] (13)Permission denied: access to /foo denied The subfolder in question has chmod 755 access. I've tried specifying likes like http://localhost/foo/test.php, but that didn't work either. Next, I tried the symlink route. Went into /Library/WebServer/Documents and made a symlink to ~/Documents/foo/html. The document root has Options Indexes FollowSymLinks MultiViews This still got me 403 Forbidden: Symbolic link not allowed or link target not accessible: /Library/WebServer/Documents/foo What else do I need to set this up? Solution: $ chmod 755 ~/Documents In general, the folder to be shared and all of its ancestor folder needs to be viewable by the www service user.

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• High data on recv-q buffer and thread lock on java.io.BufferedInputStream in linux

  - by Sagar Patel

  We have a java application running on linux (ubuntu server). We have been facing high recv-q problem since quite some time. Application gets hang and does not read data from socket every few hours. In thread dump, we have found below stack trace. "Receiver-146" daemon prio=10 tid=0x00007fb3fc010000 nid=0x7642 runnable [0x00007fb5906c5000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream. socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:150) at java.net.SocketInputStream.read(SocketInputStream.java:121) at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) at java.io.BufferedInputStream.read1(BufferedInputStream.java:275) at java.io.BufferedInputStream.read(BufferedInputStream.java:334) - locked <0x00000007688f1ff0> (a java.io.BufferedInputStream) at org.smpp.TCPIPConnection.receive(TCPIPConnection.java:413) at org.smpp.ReceiverBase.receivePDUFromConnection(ReceiverBase.java:197) at org.smpp.Receiver.receiveAsync(Receiver.java:351) at org.smpp.ReceiverBase.process(ReceiverBase.java:96) at org.smpp.util.ProcessingThread.run(ProcessingThread.java:199) at java.lang.Thread.run(Thread.java:722) We are not able to trace the exact reason behind this? Kindly help. We are using 16 core machine and load on the system is around 30-40 at the time of issue. We use command ss dst <ip> to find out recv-q. Recently we have been facing issues with recv-q size getting hung, were in receive buffer gets stuck at some point of time. But recvQ size is not decreasing and as a result we are losing a lot of hits from the other side, our application is not accepting any data.

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• sudo fdisk in a live session does not show all hard drives

  - by cornbread

  I am having Grub2 issues in my Ubuntu 10.04 dual boot, 2 hard drive system. So I am attempting to follow the standard grub2 reinstallation guide (cant post link because of spam filters allowing only one... ?_?) Don't know if this is the root of my problem, but my speedy internal HD with my OS on it is not showing up anywhere in a live session. Not in nautilus, behind fdisk.... no where. When I can get the main system to boot, there is no issue seeing all available partitions. But the live session sees only the 1TB internal media/backup hard drive. I need access to the other hard drive and it's partitions to finish the grub2 re-installation but I am not sure anymore that is the underlying issue. Anyone have experience with this? The issue I have identified as a grub2 issue is fully described here. SandPvvr describes it exactly. Some notes: I do not see the grub2 menu for my os's holding down the shift key after my bios screen works maybe 10% of the time Not related to reinstalling a windows os. havent been touched in a year do some web development. issue may have started when I was playing with ruby and django. not sure on this. Could a dev environment do this? fdisk in live session ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0001d518 Device Boot Start End Blocks Id System /dev/sdb2 1 121601 976759939 5 Extended /dev/sdb5 487 110765 885816036 83 Linux /dev/sdb6 110766 121601 87040138+ b W95 FAT32 /dev/sdb7 1 486 3903700+ 82 Linux swap / Solaris Partition table entries are not in disk order

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• How do I push my initial snapshot to a subscriber server in SQL Server 2000?

  - by Kev

  I'm configuring Transactional Replication using the Push model. The scenario is: The SQL Servers: SQL01 (publisher) and SQL02 (subscriber) - both running SQL 2000 SP4. Both servers are standalone (i.e. not domain members) Both servers have their FQDN and NETBIOS names in their HOSTS files I've managed to configure SQL01 to publish my database and configured a Push subscription for SQL02 using the Push New Subscription wizard and set the Distribution Agent to update the subscription continuously. On the Push Subscription wizard "Initialise Subscription" page I've selected "Yes, initialise the schema and data" and ticked the "Start the Snapshot Agent to begin the initialisation process immediately" option. All the required services are running (SQL Agent). When I complete the wizard and browse the Replication - Publications folder I can see my publication (blue book with arrow). The publication shows the Push subscription and its status is Pending. If I look in the c:\Program Files\Microsoft SQL Server\Mssql\Repldata folder I see a number of T-SQL scripts for each table e.g. Products.bcp, Products.sch, Products.idx. What should happen now? Should my replicated database now (magically) appear on the subscription server?

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• Large, high performance object or key/value store for HTTP serving on Linux

  - by Tommy

  I have a service that serves images to end users at a very high rate using plain HTTP. The images vary between 4 and 64kbytes, and there are 1.300.000.000 of them in total. The dataset is about 30TiB in size and changes (new objects, updates, deletes) make out less than 1% of the requests. The number of requests pr. second vary from 240 to 9000 and is dispersed pretty much all over, with few objects being especially "hot". As of now, these images are files on a ext3 filesystem distributed read only across a large amount of mid range servers. This poses several problems: Using a fileysystem is very inefficient since the metadata size is large, the inode/dentry cache is volatile on linux and some daemons tend to stat()/readdir() it's way through the directory structure, which in my case becomes very expensive. Updating the dataset is very time consuming and requires remounting between set A and B. The only reasonable handling is operating on the block device for backup, copying, etc. What I would like is a deamon that: speaks HTTP (get, put, delete and perhaps update) stores data it in an efficient structure. The index should remain in memory, and considering the amount of objects, the overhead must be small. The software should be able to handle massive connections with slow (if any) time needed to ramp up. Index should be read in memory at startup. Statistics would be nice, but not mandatory. I have experimented a bit with riak, redis, mongodb, kyoto and varnish with persistent storage, but I haven't had the chance to dig in really deep yet.

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• Win 7 x64 explorer.exe stops responding on copy/paste

  - by Sourabh

  Few months ago I changed my Win7 orb using this software. But it changed only the explorer.exe in C:\Windows. To solve that, I copied explorer.exe from there to C:\Windows\system32 and C:\Windows\SysWOW64 (Probably a bad idea). Things were working fine until a few days ago, it started giving me problems while copying. Sometimes, when I copy/paste, It works fine but sometimes it stays on that dialog box which looks like it is doing pre-copying things like counting number of files/file size etc. But its not. It stays on that screen forever. Now if I try to close it, title changes to cancelling but rest stays the same. If I try to close it too many times, explorer.exe crashes. And its not related to file-size. It may crash for 4Mb file and work fine for 10Gb file but some other time, it'll do the opposite. Is there any way to reset my explorer.exe and Is this because of explorer.exe or something else PS: I forgot to take backup of explorer.exe. PS2: I didn't install any software or downloaded anything that could harm my computer. EDIT I tried System Restore and SFC /scannow but they didn't help.

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• For Windows XP: How to uninstall Broadcom Bluetooth software that won't disappear

  - by T. Webster

  Hello, my situation is similar to this question for Windows 7, except my OS is Windows XP SP3. I have recently realized I made the mistake of buying a Bluetooth adapter and installing the Broadcom/Widcomm Bluetooth stack driver software. Now that I know that the software is no good, I want to install it (so I can install the Toshiba stack for the Cirago adapter). I've attempted to uninstall all Bluetooth driver software in Device Manager, and I don't see any remnants of any Bluetooth drivers there. I would include pictures here, but I don't have 10 reputation yet, so I'll just use links instead. picasaweb.google.com/lh/photo/2NAos6BP9UigPtJKaYRGyQ?feat=directlink But I do see that the little Bluetooth icon still persists: picasaweb.google.com/lh/photo/kbxgPP8ZLxhjX4ob2YjSew?feat=directlink I don't see anything about Bluetooth, Broadcom, or Widcomm in Add/Remove Programs. I don't see any folder names Broadcom or Widcomm in Program Files folder, either. But I do see that Broadcom does show up in the registry with respect to Bluetooth, as shown here. picasaweb.google.com/lh/photo/hWDo-OzB8ApibzeHA_saxQ?feat=directlink What should I do now to completely wipe this persistent Broadcom Bluetooth software off my computer?

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• PHP pages are not parsed by Apache on CentOS

  - by Ram

  I have installed Centos 5.x, Apache 2.2, PHP 5.3 and MySQL 5.5. I also installed phpMyAdmin. I am able to access phpMyAdmin through the browser without any issues. However, when I create a simple index.php with phpinfo() function in the default directory, that page is served without php parsing. As we all know, phpMyAdmin is a php application. This is working fine from the same server but not the simple php page from the doc root directory ??!!!. Of course, I tried moving this page into phpMyAdmin folder and tried accessing it, but no success. Please note that I updated httpd.conf file with appropriate directives based on the php installation guide.Following directives were added to httpd.conf. AddTyoe application/x-httpd-php LoadModule php5_module /usr/lib/httpd/modules/libphp5.so <FilesMatch "\.php$"> SetHandler application/x-httpd-php </FilesMatch> File locations are: docroot - /var/www/html phpMyAdmin folder - /var/www/html/phpMyAdmin File privileges are: [root@linuxdev1 html]# ls -Z -rwxr-xr-x root root index.php drwxr-xr-x root root phpMyAdmin -rw-r--r-- root root phpMyAdmin-3.4.3.2-english.tar.gz drwxr-xr-x root root test1 Any help is appreciated.

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• ORA- 01157 / Cant connect to database

  - by Tom

  Hi everyone, this is a follow up from this question. Let me start by saying that i am NOT a DBA, so i'm really really lost with this. A few weeks ago, we lost contact with one of our SID'S. All the other services are working, but this one in particular is not. What we got was this message when trying to connect ORA-01033: ORACLE initialization or shutdown in progress An attempt to alter database open ended up in ORA-01157: cannot identify/lock data file 6 - see DBWR trace file ORA-01110: data file 6: '/u01/app/oracle/oradata/xxx/xxx_data.dbf' I tried to shutdown / restart the database, but got this message. Total System Global Area 566231040 bytes Fixed Size 1220604 bytes Variable Size 117440516 bytes Database Buffers 444596224 bytes Redo Buffers 2973696 bytes Database mounted. ORA-01157: cannot identify/lock data file 6 - see DBWR trace file ORA-01110: data file 6: '/u01/app/oracle/oradata/xxx/xxx_data.dbf' When all continued the same, I erased the dbf files (rm xxx_data.dbf xxx_index.dbf), and recreated them using touch xxx_data.dbf. I also tried to recreate the tablespaces using `CREATE TABLESPACE DATA DATAFILE XXX_DATA.DBF` and got Database not open As I said, i don't know how bad this is, or how far i'm from gaining access to my database (well, to this SID at least, the others are working). I would imagine that a last resource would be to throw everything away, and recreating it, but I don't know how to, and I was hoping there's a less destructive solution. Any help will be greatly appreciated . Thanks in advance.

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• Computing Number of Bits in Public Key

  - by eb80

  I am working with DKIM and trying to compute the public key size of some DKIM signatures. I know from tools that Gmail's is now 2048, but how could I have figured this out myself (i.e., what exact Linux commands and why)? user@host$ dig txt 20120113._domainkey.gmail.com ; <<>> DiG 9.8.3-P1 <<>> txt 20120113._domainkey.gmail.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52228 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;20120113._domainkey.gmail.com. IN TXT ;; ANSWER SECTION: 20120113._domainkey.gmail.com. 300 IN TXT "k=rsa\; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1Kd87/UeJjenpabgbFwh+eBCsSTrqmwIYYvywlbhbqoo2DymndFkbjOVIPIldNs/m40KF+yzMn1skyoxcTUGCQs8g3FgD2Ap3ZB5DekAo5wMmk4wimDO+U8QzI3SD0" "7y2+07wlNWwIt8svnxgdxGkVbbhzY8i+RQ9DpSVpPbF7ykQxtKXkv/ahW3KjViiAH+ghvvIhkx4xYSIc9oSwVmAl5OctMEeWUwg8Istjqz8BZeTWbf41fbNhte7Y+YqZOwq1Sd0DbvYAD9NOZK9vlfuac0598HY+vtSBczUiKERHv1yRbcaQtZFh5wtiRrN04BLUTD21MycBX5jYchHjPY/wIDAQAB" ;; Query time: 262 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Nov 19 10:52:06 2012 ;; MSG SIZE rcvd: 462

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• Relayout LVM Disk

  - by Tom

  I have an Ubuntu 11.10 system with two 500GB disks. The partition tables look like this: /dev/sda1 primary 465.52GB /dev/sda2 extended 243.17MB -> /dev/sda5 logical 243.14MB /dev/sdb1 primary 465.76GB sda1 and sdb1 are in a single LVM physical volume group containing a single logical volume containing a single logical filesystem which is mounted as /. sda5 is mounted as /boot. The problem comes when I want to upgrade to Ubuntu 12.04, which requires at least 247MB free on /boot. So I need to reduce the size of sda1 so that I can increase the size of sda2 and sda5. How the heck do I do that? I can find how to shrink the logical volume group, but I'm not at all clear on how to clear out the end part of sda1 so that I can reduce the physical volume group. Does pvresize just deal with this automagically? Or is that wild wishful thinking? I guess the alternatives are to back everything up onto something or other and recreate the thing from scratch or find out whether GRUB2 supports using LVM for /boot.

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• ERROR: Not enough space?

  - by dsmoljanovic

  Now this is a very unspecific question. I'm trying to figure out what this message would mean. Here is the story behind it: I'm installing Oracle enterprise manager cloud control (12c r3) on Solaris 10 (5/09). Installer opens up, i enter all needed information and at the last step click Install. It immediately crashes with only "ERROR: Not enough space" written in log and console and nothing else. Now, this could be java error or Solaris error? I'm thinking it's happening either when it starts to copy files or when it tries to launch a process that would do that. What space is it referring to? disk (have ehough), swap (also), memory (yep)... Any ideas are helpful. Edit: i found this exception in the oraInventory logs: oracle.sysman.oii.oiic.OiicInstallAPIException: Not enough space at oracle.sysman.oii.oiic.OiicAPIInstaller.initInstallSession(OiicAPIInstaller.java:2165) at oracle.sysman.oii.oiic.OiicAPIInstaller.initOUIAPISession(OiicAPIInstaller.java:790) at oracle.sysman.install.oneclick.EMGCOUIInstaller.prepareForInstall(EMGCOUIInstaller.java:676) at oracle.sysman.install.oneclick.EMGCSummaryDlgonNext$1.run(EMGCSummaryDlgonNext.java:243) at java.lang.Thread.run(Thread.java:662) at oracle.sysman.install.oneclick.EMGCSummaryDlgonNext.actionsOnClickofNext(EMGCSummaryDlgonNext.java:1067) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at oracle.sysman.install.oneclick.EMGCUtil.performonClickOfNextForClass(EMGCUtil.java:399) at oracle.sysman.install.oneclick.EMGCUtil.performPageLevelValidationsForSilentInstall(EMGCUtil.java:367) at oracle.sysman.install.oneclick.EMGCInstaller.prepareForSilentInstall(EMGCInstaller.java:1459) at oracle.sysman.install.oneclick.EMGCInstaller.main(EMGCInstaller.java:1553) disk status: bash-3.00$ df -h /tmp Filesystem size used avail capacity Mounted on swap 8.1G 2.7G 5.4G 33% /tmp bash-3.00$ df -h /u01 Filesystem size used avail capacity Mounted on / 275G 28G 244G 11% / swap: root@gs12emcc # swap -s total: 18306040k bytes allocated + 3837808k reserved = 22143848k used, 5712664k available

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• Rails application keeps timing out when attempting to connect to Postgresql DB

  - by Corillian

  I'm hosting a postgresql database on a small windows azure Ubuntu 13.04 VM with a default postgresql.conf. I have a Rails application running on a medium windows azure Ubuntu 13.04 VM. When accessing the postgresql database the rails application is constantly timing out. In its database.yml I have the connection pool size set to 120 and the timeout set to 15 seconds. Despite this my rails logs are full of the following error message: ActiveRecord::ConnectionTimeoutError: could not obtain a database connection within 5 seconds (waited 5.0023203 seconds). The max pool size is currently 120; consider increasing it. My postgresql.conf has a max connection limit of 120, making it any larger prevents the server from being able to successfully restart. I've also made sure that ssl was off in the postgresql.conf per this article but beyond that I have no idea what's going on. My postgresql logs don't contain any info indicating something is going wrong. My website is getting ~1k hits per day so perhaps a small VM instance just isn't powerful enough? I appreciate any assistance! [Edit1] The postgresql database is in a separate cloud service within the same affinity group. For example: db small VM: mydatabase.cloudapp.net (Affinity Group US East) forums medium VM: myforums.cloudapp.net (Affinity Group US East) On the database server I have opened port 5432. The connection to the database server from the forums server is using its hostname. Is it possible that the DNS resolution is what's taking so long?

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• RAID degraded on Ubuntu server

  - by reano

  We're having a very weird issue at work. Our Ubuntu server has 6 drives, set up with RAID1 as follows: /dev/md0, consisting of: /dev/sda1 /dev/sdb1 /dev/md1, consisting of: /dev/sda2 /dev/sdb2 /dev/md2, consisting of: /dev/sda3 /dev/sdb3 /dev/md3, consisting of: /dev/sdc1 /dev/sdd1 /dev/md4, consisting of: /dev/sde1 /dev/sdf1 As you can see, md0, md1 and md2 all use the same 2 drives (split into 3 partitions). I also have to note that this is done via ubuntu software raid, not hardware raid. Today, the /md0 RAID1 array shows as degraded - it is missing the /dev/sdb1 drive. But since /dev/sdb1 is only a partition (and /dev/sdb2 and /dev/sdb3 are working fine), it's obviously not the drive that's gone AWOL, it seems the partition itself is missing. How is that even possible? And what could we do to fix it? My output of cat /proc/mdstat: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda2[0] sdb2[1] 24006528 blocks super 1.2 [2/2] [UU] md2 : active raid1 sda3[0] sdb3[1] 1441268544 blocks super 1.2 [2/2] [UU] md0 : active raid1 sda1[0] 1464710976 blocks super 1.2 [2/1] [U_] md3 : active raid1 sdd1[1] sdc1[0] 2930133824 blocks super 1.2 [2/2] [UU] md4 : active raid1 sdf2[1] sde2[0] 2929939264 blocks super 1.2 [2/2] [UU] unused devices: <none> FYI: I tried the following: mdadm /dev/md0 --add /dev/sdb1 But got this error: mdadm: add new device failed for /dev/sdb1 as 2: Invalid argument Output of mdadm --detail /dev/md0 is: /dev/md0: Version : 1.2 Creation Time : Sat Dec 29 17:09:45 2012 Raid Level : raid1 Array Size : 1464710976 (1396.86 GiB 1499.86 GB) Used Dev Size : 1464710976 (1396.86 GiB 1499.86 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Thu Nov 7 15:55:07 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : lia:0 (local to host lia) UUID : eb302d19:ff70c7bf:401d63af:ed042d59 Events : 26216 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 0 0 1 removed

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• Exchange 2003 -- Mailbox Management not deleting ALL messages aged 30 days or older...

  - by tcv

  I've recently created a Mailbox Management task within Exchange 2003 that, every night, looks at the contents of the Deleted Items within a particular mailbox and deletes mail that's 30 days or older. The scheduled task ran on its own last night and I have confirmed that messages within the right mailbox and the right folder were, in fact, processed. Many mails were deleted ... but not never email older than 30 days. In fact, the choice seems kinda random. Last night 3/10/2010 was the 30 day watermark. Mails were deleted from 3/10/2010, sure enough, but not all of them. Mails older than 3/10/2010 were deleted as well, but, again, not all of them. The only criteria I have on the management -- aside from the single mailbox and single folder scopes -- is the age criteria. The size criteria is set to Any, meaning I don't care about the size. I care about the age. It's made me wonder where there is some sort of limit on how many mails can be processed? The schedule is set for 12am and 1am every night. Any hints appreciated.

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• Data recovery; nearly 1 tb of movies on a WD 3.5 tb personal cloud drive disappears with scanty traces

  - by Effector Dhanushanth

  I have a great collection of movies that I had stored in a logical mesh of folder on my 3.5 tb WD personal cloud drive. I woke up 1 morning and found that everything was fine with my data on this drive, except for my movie collection: There were two great folders, one "2sort" nd the other "segregated". out of all the segregated sub folders, only letter C D and 2 or 3 others remain. and the 2 sort folder, which has umpteen subfolders, amounting to more than 0.5 tb. is.. it's just gone!! this is a great downfall.. now this is a personal cloud drive and has no usb port etc. unfortunately to hardwire and recover files.. now I'm sure there are softwares out there that can help me recover my beloved movies from such an interestingly "hard-to-reach" (should I say?) device? what may that software be compadre, my happiness lies within your answer.. thank you.. remember, recovery software or (WD) personal cloud. :) these ovies were All, "hand-picked", over the course of ten years.. I just never catalogued my collection.. if I could just get the "list" of my lost collection, that'd be enough.. recovering em would be a bonus.. but they out to be damaged if I were to somehow recover you know? still, I'm certain they're all intact.. I guess the file index just got corrupted.. There surely is a veil of some sort that need to be thrown or pushed aside to reveal my movies.. what software can do/does that? thanks immensely!

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• Remote Desktop Services Licensing - Does server have to have a RDS role?

  - by transistor1

  I recently set up a "micro" size Windows 2008 Datacenter server on Amazon AWS. My small group needs several concurrent RDS users to be able to access the machine. Without installing the "Remote Desktop Server" role, it allows 2 concurrent connections. I read on MS' website that in order to set up multiple users, we needed to install the RDS role. I did so, but now the application we are trying to share is running much slower than it was before. Prior to the role installation, it was taking about 5 seconds to open; now it is taking a few minutes to open -- without any other users logged on except me. My assumption is that the RDS role may be too much for this micro instance to handle, and currently, changing to another size instance is not an option (it may be possible later if we were to receive enough funding). This leads me to the following questions: 1) Is it a sensible assessment to assume that it is the RDS role is slowing things down, or are there other things that I could look at to speed it up? We are talking about a machine with ~600MB of memory. 2) If I revert back to the pre-RDS role, is there any legitimate way (in terms of purchasing RDS licenses) to get more than 2 concurrent desktops? I did read this, and am not questioning that the answerer is knowlegeable; but someone else may have some other experience. I am also making it clear that we want to do this in a legitimate way. Thanks in advance for any assistance that can be provided! EDIT: if it is helpful in answering the question, the application in question is a Lotus Approach database. Also, I am asking this from a technical perspective: not a legal one. I want to know if it is possible to install valid licenses without the RDS role.

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• Windows 7 Paging file apparently not being used

  - by Daniel F.

  I'm running Windows 7 Home Premium 32bit on a mobo with 24GB RAM. Of those 24GB, 20GB are assigned as a RAMDISK via ASRock XFastRAM. This RAMDISK has the drive letter X assigned to it. On X:\ I'm storing the temporary files folder, as well as pagefile.sys. Pagefile.sys has 6GB of size. The X:\ has usually around 14GB free space, so the temporary files are negligible, it's mostly the browsers which are storing their caches on there. Now my issue is that Firefox is crashing a lot on me, no error message pops up, but I know that this is because it's out of memory. I could kind of live with that, but now that I switched from using Eclipse to Android Studio, I know that I'm in trouble, because Java isn't capable of allocating, and Android Studio, together with the Java instances it launches, is quite a memory hog. So I tried to figure out what's wrong, and apparently Windows isn't swapping out memory onto the paging file. While my applications are crashing (firefox) / not starting (java vm's), the paging file is only using constantly around 15% of its size (checked with the performance monitor). 15% equals to 1GB aprox. I know that the correct solution would be to switch to 64 bit Windows, but I had to use the 32 bit version because of driver issues which I had about two years ago, and I guess that I'll have them again if I reformat and install the 64 bit version. Also, the machine is running quite stable, the only issue is the memory, so I'd like to use it as it is (as the apps are installed and configured) Is there a way to make Windows use the paging file more efficiently? None of my processes require more than 1GB, I'd just like it to swap out some seldomly used stuff, like GoogleCrashHandler.exe and stuff like that in order to have "more physical memory avaliable". Is that possible?

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• logfile deleted on Oracle database how to re-create it?

  - by Daniel

  for my database assignment we were looking into 'database corruption' and I was asked to delete the second redo log file which I have done with the command: rm log02a.rdo this was in the $HOME/ORADATA/u03 directory. Now I started up my database using startup pfile=$PFILE nomount then I mounted it using the command alter database mount; now when I try to open it alter database open; it gives me the error: ORA-03113: end-of-file on communication channel Process ID: 22125 Session ID: 25 Serial number: 1 I am assuming this is because the second redo log file is missing. There is still log01a.rdo, but not the one I have deleted. How can I go about recovering this now so that I can open my database again? I have looked into the database created scripts, and it specified the log02a.rdo file to be size 10M and part of group 2. If I do select group#, member from v$logfile; I get: 1 /oradata/student_db/user06/ORADATA/u03/log01a.rdo 2 /oradata/student_db/user06/ORADATA/u03/log02a.rdo 3 /oradata/student_db/user06/ORADATA/u03/log03a.rdo 4 /oradata/student_db/user06/ORADATA/u03/log04a.rdo So it is part of group 2. If I try to add the log02a.rdo file again "already part of the database". If I drop group 2 and then add it again with these commands: ALTER DATABASE ADD LOGFILE GROUP 2 ('$HOME/ORADATA/u03/log02a.rdo') SIZE 10M; Nothing. Supposedly alters the database, but it still won't start up. Any ideas what I can do to re-create this and be able to open my database again?

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