The Oracle installer works well with libc6-2.3.2 but in the newer versions (2.3.5/6) it gives the following error

./runInstaller: line 141: 16517 Segmentation fault $CMDDIR/install/runInstaller SHOW_CUSTOM_TREE_PAGE=false $*

using GDB

Program received signal SIGSEGV, Segmentation fault.
0xb7e2a640 in fread () from /lib/tls/i686/cmov/libc.so.6

This is only when you run as a user other than root. The installer works well as root but does not allow installation.

ldd gives this output

linux-gate.so.1 => (0xffffe000)
libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7e97000)
/lib/ld-linux.so.2 (0xb7fd3000)

The problem can be resolved by commenting this portion in the oraparm.ini file in the install folder

[Certified Versions]
Linux=redhat-2.1,redhat-3,SuSE-8,SuSE-9,UnitedLinux-1.0

[Linux-redhat-2.1-optional]
TEMP_SPACE=400
SWAP_SPACE=1536
MIN_DISPLAY_COLORS=256
CPU=450

[Linux-redhat-3-optional]
TEMP_SPACE=400
SWAP_SPACE=1536
MIN_DISPLAY_COLORS=256
CPU=450

[Linux-SuSE-8-optional]
TEMP_SPACE=400
SWAP_SPACE=1536
MIN_DISPLAY_COLORS=256
CPU=450

[Linux-SuSE-9-optional]
TEMP_SPACE=400
SWAP_SPACE=1536
MIN_DISPLAY_COLORS=256
CPU=450

[Linux-UnitedLinux-1.0-optional]
TEMP_SPACE=400
SWAP_SPACE=1536
MIN_DISPLAY_COLORS=256
CPU=450