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In this article Chris Mavin, explains and details how to Store and Retrieve Binary Objects in a Recital Database.
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An extremely useful article that describes some firefox undocumented features that allow you to install Firefox XPI And JAR Firefox Add-ons And Themes. 

http://www.universefirefox.com/how-to/how-to-install-xpi-and-jar-firefox-add-ons-and-themes
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Recital 10 introduced the REQUIRE() and REQUIRE_ONCE() statement.

The REQUIRE() statement includes and executes the contents of the specified file at the current program execution level.

When a file is included, the code it contains inherits the variable scope of the line on which the include occurs. Any variables, procedures, functions or classes declared in the included file will be available at the current program execution level.

The REQUIRE_ONCE() statement is identical to the REQUIRE() statement except that Recital will check to see if the file as already been included and if so ignore the command.

The full syntax is:
REQUIRE( expC )
REQUIRE_ONCE( expC )

e.g.

REQUIRE_ONCE( "myapp/myglobals.prg" )
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TIP
The Recital Oracle Gateway requires the Oracle libclntsh.so shared library.  If this file is unknown to ld.so.conf, add it using the ldconfig command. 
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There's a nice article on IBM developerworks describing how to package software using RPM. You can read it here.

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There is a good article on the gluster website here which gives some good information regarding file system optimization suitable for a HA Recital cluster solution.

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Occasionally subversion can get itself confused about what is and what is not in a working copy. This usually occurs if you have replaced the contents of a directory such as when you upgrade a component in Joomla!

You receive a message such containing this:

"working copy admin area is missing"

How to resolve this: 

Step 1 -- Rename the directory that is causing the error from a shell prompt and prefix it with __ 

mv com_docman __com_docman

Step 2 -- Using your subversion client refresh your working copy, then "update" the directory that is causing the problem e.g. update com_docman.

Step 3 -- Now you can commit the __com_docman directory.

After you have done this follow these steps, using your subversion client:

Step 4 -- delete the com_docman directory from your working copy
Step 5 -- rename __com_docman back to com_docman

Now "commit all" and both your working copy and repository will be in sync.
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Recital is a dynamic programming language particularly suited to the development of database applications. While Recital still supports standard procedural programming, new extensions to the language give you the power and flexibility of object-oriented programming. Object-oriented design and object-oriented programming represent a change in focus from standard procedural programming. This short primer will give you a good understanding of how to program object-oriented Recital.
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The Openfiler NAS/SAN Appliance (NSA) is a Storage Management Operating System / NAS Appliance distribution. It is powered by the Linux 2.6 kernel and Open Source applications such as Apache, Samba, LVM2, ext3, Linux NFS and iSCSI Enterprise Target. Openfiler combines these ubiquitous technologies into a small, easy to manage solution fronted by a powerful web-based management interface. Openfiler allows you to build a Network Attached Storage (NAS) and/or Storage Area Network (SAN) appliance, using industry-standard hardware, in less than 10 minutes of installation time.

Building upon the popularity of server virtualization technologies such as VMware, Virtual Iron, and Xen, Openfiler can also be deployed as a virtual machine instance or on  a bare metal machine.

This deployment flexibility of Openfiler ensures that storage administrators are able to make the best use of system performance and storage capacity resources when allocating and managing networked storage in a multi-platform environment.

Openfiler is ideally suited for use with High Availability Recital applications as it incorporates:

  • Heartbeat cluster manager
  • drbd disk replication
  • CIFS
  • NFS
  • Software and hardware RAID
  • FTP
  • rsync
  • HTTP/DAV
  • iSCSI
  • LVM2
  • Multiple NIC bonding for High Availability
  • Powerful web-based GUI

 

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