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In this article Yvonne Milne looks at the use of the Recital Remote Data Connectivity Functions with Recital Database Gateways.

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We are pleased to announce the release of Recital 10.0.2.

Here is a brief list of features and functionality that you will find in the 10.0.2 release. 

  • New commands
    SAVE/RESTORE DATASESSION [TO variable]
    CONNECT "connectString"
    DISCONNECT 
  • New functions (OData compatible)
    startsWith(haystack as character, needle as character)
    endsWith(haystack as character, needle as character)
    indexOf(haystack as character, needle as character)
    substringOf(haystack as character, needle as character)
    concat(expC1, expC2)
  • New system variables
    _LASTINSERTEDSYNCNUM
  • Enhanced commands
    Added CONNSTRING "connectingString" to the USE command to connect to remote servers (Recital, MySQL, PostgreSQL, Oracle, ODBC)
  • Further SQL query optimizer improvements to boost performance
  • Performance improvements in Recital Web
  • Forced all temporary files into temp directory (improves performance when local tmpfs is used as temp directory and reduces network i/o)
  • Fixed cookie and session variable problems in Recital Web
  • Fixed problem with temporary files being left after some server queries involving memos and object data types
  • Improved performance of the Windows ODBC driver
  • Fixed a security flaw in Recital Web
  • Fixed all reported bugs 
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In this article Barry Mavin, CEO and Chief Software Architect for Recital debunks the myths and misrepresentations surrounding XBase and explains how Recital, an enterprise-class XBase platform, has overcome all the shortfalls and weaknesses of early XBase implementations.

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lslk lists information about locks held on files with local inodes on systems running linux.

Install it with:

yum install lslk
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The ShellEd plugin is a good shell editor for Eclipse
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Platforms supported

  • Intel® / AMD™ 32 bit Linux
  • Intel® / AMD™ 64 bit Linux
  • HP PA-RISC HP-UX® 10.20 and above
  • Sun® SPARC Solaris™ 8 and above
  • HP Alpha OpenVMS 7.2-1 and above
  • SCO® OpenServer 5.0.5 and above
  • Sun® Intel® Solaris™ 10 and above
  • IBM AIX® 4.3 and above
  • HP Integrity OpenVMS 8.2-1 and above
  • HP Intel® Itanium® HP-UX® 11.23 and above
  • Mac OS X leopard 10.5 and above

Large File Support is available for Windows, Itanium HP-UX and Linux. 
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After installing nomachine, if you get an error connecting whereby nomachine errors out after  "Negotiating link parameters"
 

When installing nomachine on redhat 5.3 64-bit be sure to:

  1. Make sure you have installed the 64-bit packages as the 32-bit ones will not work.
  2. add the hostname to /etc/hosts
  3. Check "Disable encryption of all traffic" (in configuration / advanced tab)
On Centos 32-bit:
  1. add the hostname to /etc/hosts
  2. make sure the host IP is not specified as 127.0.0.1 line
  3. Uncheck "Disable encryption of all traffic" (in configuration / advanced tab)
 
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Many motherboards nowadays have integrated gigabit ethernet that use the Realtek NIC chipset.

The Realtek r8168B network card does not work out of the box in Redhat/Centos 5.3: instead of loading the r8168 driver, modprobe loads the r8169 driver, which is broken as can be seen with ifconfig which shows large amounts of dropped packets. A solution is to download the r8168 driver from the Realtek website and install it using the following steps:

Check whether the built-in driver, r8169.ko (or r8169.o for kernel 2.4.x), is installed.

# lsmod | grep r8169

If it is installed remove it.

# rmmod r8169

Download the R8168B linux driver from here into /root.

Unpack the tarball :

# cd /root
# tar vjxf r8168-8.012.00.tar.bz2

Change to the directory:

# cd r8168-8.012.00

If you are running the target kernel, then you should be able to do :

# make clean modules   
# make install
# depmod -a
# insmod ./src/r8168.ko (or r8168.o in linux kernel 2.4.x)

make sure modprobe knows not to use r8169, and that depmod doesn’t find the r8169 module.

# echo "blacklist r8169" >> /etc/modprobe.d/blacklist
# mv /lib/modules/`uname -r`/kernel/drivers/net/r8169.ko   \ /lib/modules/`uname -r`/kernel/drivers/net/r8169.ko.bak

You can check whether the driver is loaded by using the following commands.

# lsmod | grep r8168
# ifconfig -a

If there is a device name, ethX, shown on the monitor, the linux driver is loaded. Then, you can use the following command to activate it.

# ifconfig ethX up

After this you should not see any more dropped packets reported.

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Mac OS X leopard supports Universal Binaries so executables and dynamic libraries can be run on multiple architectures. A good example of this is the default apache install on Mac OS X. 
In order to compile apache modules for this architecture you must use the following flags when configuring the apache install.
 ./configure CFLAGS='-arch x86_64' APXSLDFLAGS='-arch x86_64' --with-apxs=/usr/sbin/apxs
Then you must pass the these additional flags to the apxs command in order to generate a Universal Binary shared module.
-Wl,-dynamic -Wl,'-arch ppc' -Wl,'-arch ppc64' -Wl,'-arch i386' -Wl,'-arch x86_64' 
-Wc,-dynamic -Wc,'-arch ppc' -Wc,'-arch ppc64' -Wc,'-arch i386' -Wc,'-arch x86_64' 
If you then do a file command on the shared module it should return; 
$ file mod_recital.so 
mod_recital2.2.so: Mach-O universal binary with 4 architectures 
mod_recital2.2.so (for architecture ppc7400): Mach-O bundle ppc 
mod_recital2.2.so (for architecture ppc64): Mach-O 64-bit bundle ppc64 
mod_recital2.2.so (for architecture i386): Mach-O bundle i386 
mod_recital2.2.so (for architecture x86_64): Mach-O 64-bit bundle x86_64
The apache module files are stored in the /usr/libexec/apache2/ directory on a default apache install on the Mac and the configuration file is /private/etc/apache2/httpd.conf
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