I'm not sure what you mean by "8.2"... maybe "Solaris 8 2/04"?
But anyway, we currently support Solaris 8 only on SPARC. Our Intel Solaris packages require Solaris 9 or above.
I don't believe we have tested or certified on Solaris 8:
Supported OSes
Splunk is supported on the following platforms.
Solaris 9, 10 (x86, SPARC) Linux Kernel vers 2.6.x and above (x86: 32 and 64-bit) FreeBSD 6.1 and 6.2 (x86: 32 and 64-bit) Windows 2003 (64-bit, supported but not recommended on 32-bit) Windows 2008 (64-bit, supported but not recommended on 32-bit) WindowsXP (32-bit) Vista (32-bit, 64-bit) MacOSX 10.5 and 10.6 (32-bit & 64bit in one download, 10.6 is only supported in 32-bit mode) AIX 5.2 5.3
http://www.splunk.com/base/Documentation/4.0.8/Installation/Systemrequirements