Free X windows emulator for running Oracle Installer

It’s often a pain getting X windows GUIs like the Oracle Installer and DBCA to run on Micrsoft Windows PC clients. Emulators like Reflection-X, KEA-Term, and Exceed work ok, but they cost money to licence and require source media and local admin rights to install. Those things can take an age to organise in large bureaucratic organisations.

An easy way round this is to download and run “DSL (Damn Small Linux) embedded”. It’s like having a linux desktop, but runs as a program inside Microsoft Windows. It’s free, and works as well or better than the commercial emulators for me - except on one old laptop without much memory where mouse control back inside Windows became erratic.

“DSL embedded” can be downloaded from here (look for dsl-[VERSION]-embedded.zip). Unzip that and run “dsl-base.bat” to start it up under Microsoft Windows. While using it, “Ctrl+Alt” switches back to Microsoft Windows applications. To close it, right click its desktop and select “power down”.

More details at damnsmalllinux.org

Old c compilers needed for 9i on Red Hat Linux

9i on Red Hat Linux (with the exception apparently 32-bit on RH3) won’t install unless you revert the c compilers back to old versions. Horrible. But fixed (I am told) with oracle 10g.

And its not something you necessarily want to do just for the install - because future patchsets and even some one off bugfixes will need to use the old compilers also.

Also note that on Red Hat, you don’t get a choice with oracle word size - if you have built a 64 bit OS kernel, then you have to use 64 bit oracle, and (obviously) vice versa. That’s different to SPARC Solaris, where you can happily run 32 bit oracle on a 64 bit kernel (if for some strange reason you ever wanted to). However it is possible to run a 32 bit kernel OS on 64 bit hardware. “uname -a” tells you whether the OS kernel is 32 bit or 64 bit - if it reports “i386″, its 32 bit; “i386-64″ means its 64 bit.

On RH4, for both 64-bit and 32-bit:
1) Revert back to an old c compiler (as the root userid):
mv /usr/bin/gcc /usr/bin/gcc.orig
mv /usr/bin/g++ /usr/bin/g++.orig
ln -s /usr/bin/x86_64-redhat-linux-gcc32 /usr/bin/gcc
ln -s /usr/bin/x86_64-redhat-linux-g++32 /usr/bin/g++
2) Set environment variable (as the oracle userid before running installer):
export LD_ASSUME_KERNEL=2.4.19

On RH3 64-bit:
1) apply patch 3423540 before running the installer
2) Set environment variable (as the oracle userid before running installer):
export LD_ASSUME_KERNEL=2.4.19

On RH3 32-bit:
1) Revert back to an old c compiler (as the root userid):
mv /usr/bin/gcc /usr/bin/gcc323
mv /usr/bin/g++ /usr/bin/g++323
ln -sf /usr/bin/gcc296 /usr/bin/gcc
ln -sf /usr/bin/g++296 /usr/bin/g++
2) apply patch 3006854 before running the installer
3) Set environment variable (as the oracle userid before running installer):
export LD_ASSUME_KERNEL=2.4.19

(Caveat emptor: I’ve only done installs of RH4 64-bit and RH3 32-bit, so the information for the others is from metalink only.)

References:
RH3 32-bit
RH3 64-bit
RH4 32-bit
RH4 64-bit