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  • Postgresql Internals - Documentation

    - by NogginTheNog
    I'm looking for some up-to-date information about postgresql internals, specifically the query optimizer. I've found this link (referred to in the "Further Reading" section of the 8.4 docs):- http://db.cs.berkeley.edu//papers/UCB-MS-zfong.pdf but it seems quite old. That in itself is not a problem, but I wanted to be sure that I have information that is relevant. Is this the best resource for understanding how postgresql processes queries (using plans, statistics etc.) or are there others?

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  • Determine Configured Location of MySQL's data directory OR all loaded *.cfn Locations

    - by alanstorm
    I'm not a sys-admin, but sometimes I play one at work. I've inherited a virtual server that had MySQL installed from source. I'm gathering as much information about the install as I can (original people who installed it are, of course, not a resource). How can I find The default/current location of the MySQL binary files (often stored in a directory named data?) Any default or custom loaded cnf files? Looking for solutions that are a bit more sophisticated than a find / -iname '*.cnf' :)

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  • Need to reformat SQL Cluster Disk. How do I recover my SQL installation?

    - by I.T. Support
    We need to reformat the SQL cluster disk in our SQL cluster. The drive contains the shared installation files for SQL as well as databases. My concern is how SQL/The Cluster will react to after we wipe the disk resource. Questions: Is there a defined procedure for this? How should we backup and restore the disk? After the reformat, how do we get the clustered SQL server back online? Thanks

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  • File command output is different for same file on diff machine

    - by Coka
    I get different output of file command on same file(checked inode) from different machines. One of the machines is with suse10 sp3 and the another - rhel4. machine1>file x.tcl x.tcl: ASCII English text machin2>file x.tcl x.tcl: data Even in vi editor same file look different from different machine. Any clue? One more thing - there's third machine suse10 sp3 works fine. Is this machine issue?

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  • getting rich text from the X clipboard

    - by intuited
    How can rich text be obtained from the X clipboard? For example, if you copy some text from a web browser and paste it into kompozer, it pastes as HTML, with links etc. preserved. However, xclip -o for the same selection just outputs plain text. I'd like to pull the HTML out and into a text editor.

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  • Custom layout/group switching keys in Linux

    - by abyx
    I'm using Ubuntu (Karmic) and 2 keyboard layouts. Using the gnome settings, I managed to set it to switch with Alt+Shift (windows style), but I really want to limit it to Right Alt + Right Shift, but that option isn't available in the gnome wizard. I've opened gconf-editor and found the kbd configuration, but trying to add 'r' or 'right_' prefixes to the keys didn't help. Is this possible?

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  • Chroot for Mysql running on Ubuntu 10.10?

    - by Calvin Froedge
    Prompted from a question about MySQL server security best practices, I've been running through this list (with a few minor alterations) to properly secure my server database server: http://www.greensql.net/publications/mysql-security-best-practices On step 10, I'm told to change the root directory for the mysql user using chroot, but very few specifics are provided and I'm not sure where to start. Does anyone know of a good resource for walking me through the steps to properly create a chrooted environment for Ubuntu 10.10?

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  • How do I set a service startup type to be 'Automatic (delayed)' using GPO?

    - by growse
    A Windows service has 4 different startup types that can be configured: Automatic, Automatic (delayed), Manual and Disabled. I have a service running on a combination of Windows 7 and Server 2008 R2 Desktops that I need to set as 'Automatic (delayed)' using a GPO setting, but from what I can see in the GPO editor, the delayed option is missing: Have I missed something obvious, or is this a rather basic omission from Microsoft?

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  • mod_pagespeed using up too many resources?

    - by OC2PS
    I have found several threads from 2010 and early-2011 talking about excessive resource usage by mod_pagespeed I haven't seen any recent ones. I am facing excessive memory usage, which is causing server to crash several times a day. I am wondering if the issue was ever fixed before mod_pagespeed 1.0 was released. Also, request any tips and suggestion on how to fix the issue. My server configuration: 4 quad-core processors (likely oversold) 3GB memory Xen Centos 6 64-bit Apache cPanel PHP mySQL

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  • Remove some junk characters from server console log.

    - by Jayakrishnan T
    Please look in to the picture,here am trying to open(with vi editor) my server console log file(around 100MB) and it takes more than two minutes to open with so many special characters.after deleting the first line (means typing "dd")then i can easily view the file and size of the file is also reduced very much.My server OS is RHEL 5.4 and jboss is running in to it. Please help me to avoid such junk characters coming to my server console log files and it helps me to save my valuable space in server.

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  • LaTeX Editors

    - by thinkhard
    Whats the best LaTeX editor you've used, and what would you recommend someone read to understand and become proficient with authoring papers/books in LaTeX? Additionally, I have failed in migrating to this site from StackOverflow and ServerFault so I cannot create a new tag for this. Anyone with sufficient reputation may tag this question for me with LaTeX and edit this paragraph out.

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  • Enabling Squid delay pool eats up the entire memory

    - by Supratik
    I am using "squid-3.1.8-1.el5" in my CentOS 5 32 bit system. In normal condition Squid uses 85m - 90m, but when I enable the delay pool parameters the memory usage suddenly rise up 2GB. The memory keeps on increasing until the system is out of resource. The following are my delay pool settings: delay_pools 1 delay_class 1 1 delay_access 1 allow all delay_parameters 1 192000/192000 Is there anything I am missing here or is it a bug with Squid ?

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  • sudoers entries

    - by Pochi
    Is there a way to have a sudoers entry that allows executing of only a particular command, without any extra arguments? I can't seem to find a resource that describes how command matching works with sudoers. Say I want to grant sudo for /path/to/executable arg. Does an entry like the following: user ALL=(ALL) /path/to/executable arg strictly allow sudo access to a command exactly matching that? That is, it doesn't grant user sudo privileges for /path/to/executable arg arg2?

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  • How can I make a Windows 7 allow me to edit a data file?

    - by Ruvi
    Hi! I am running a Windows 7 operating system. I would like to edit a data file named "hosts" that is found in the following library: c:\windows\system32\drivers\etc\hosts The OS does not allow changes, and I do not know how to acquire administrator's power to be able to make the change. In addition, which program can edit such a file (a built-in text editor or an external one)?

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  • FAT32 4 GB+ files

    - by zm15
    I'm having the problem of needing a hard drive that can be written to by both a Mac and a PC. I have found that FAT32 might be an option, but as a video editor I often deal with files over the 4 GB limit. And since Mac doesn't read NTFS (very well with third-party programs) I'm considering FAT32. I'm curious, what happens when you try to write a file that is over 4 GB? What is a good way around this?

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