Application crashing with error *** libthread failure: _thread_setschedpar

[devikars]

On Solaris9 my application is crashing with this error message.
* libthread failure: _thread_setschedparam_main() fails
Application is running fine on Solaris10.

Program Stack trace at this crash is
=>[1] __lwp_kill(0x0, 0x6, 0x0, 0xfffffffffffffff8, 0x0, 0xffffffff7fffe1f9), at 0xffffffff7a9a8ebc
[2] Abort(0xffffffff7fffe2a0, 0x0, 0x3a, 0x7efefeff, 0x81010100, 0xff00), at 0xffffffff7ac094a0
[3] panic(0xffffffff7ac18768, 0xffffffff77d00000, 0x0, 0x1, 0x0, 0xffffffff7fffe519), at 0xffffffff7ac0959c
[4] _ceil_prio_inherit(0xff, 0x0, 0x0, 0x10533c, 0xffffffff7ac13b04, 0x0), at 0xffffffff7ac126a8
[5] mutex_lock_internal(0x0, 0x0, 0xffffffff77d00000, 0x17a50, 0xffffffff77c40400, 0x0), at 0xffffffff7ac13c5c
[6] std::basic_streambuf >::getloc(0x1005d6590, 0xffffffff7b2ceaa0, 0x1005d6580, 0x1fbf44, 0xffffffff77c40700, 0xffffffff7fffebac), at 0xffffffff7b11d49c
[7] std::basic_filebuf >:verflow(0xffffffff7b2ceaa0, 0xffffffffffffffff, 0xffffffff7b2c0608, 0x400, 0xffffffff7b2ceaa0, 0x2), at 0xffffffff7b0c47d8
[8] std::basic_filebuf >::sync(0xffffffff7b2ceaa0, 0x0, 0xffffffff77d00000, 0x1041fc, 0xffffffff7b0c46b0, 0x8), at 0xffffffff7b0c62d0
[9] std::basic_ostream >::flush(0xffffffff7b2cc920, 0xffffffff7b2cc930, 0xd338, 0xffffffff7b0c62a0, 0xffffffff7b2c0608, 0xffffffff7b2c8528), at 0xffffffff7b080e9c
[10] std::ios_base::Init::~Init(0x1, 0xffffffff7b2ced30, 0xffffffff7b2c0608, 0x790, 0x1a6914, 0x400), at 0xffffffff7b119d40
[11] __SUNW_fini_iostreams(0xff000000, 0xff000000, 0xffffffff77c00000, 0x2a640, 0xffffffff77c40180, 0x10c800), at 0xffffffff7b11a7dc
[12] __Cimpl::cplus_fini(0xffffffff7af0dc60, 0x0, 0x1, 0x104344, 0xffffffff7df47e38, 0xffffffff7b2cd288), at 0xffffffff7ae086ac
[13] __cplus_fini_at_exit(0x0, 0x0, 0xffffffff77d00000, 0x50, 0x24ff98, 0x0), at 0xffffffff7b133f30
[14] _exithandle(0x28000, 0x1004bbd38, 0x24fb10, 0x1001188e4, 0xffffffff7ffff028, 0xffffffff7aab6f78), at 0xffffffff7a926e5c
[15] exit(0x3, 0xffffffff7ffff1f8, 0xffffffff7ffff210, 0x0, 0x0, 0x100000000), at 0xffffffff7a9a9518

Can somebody tell me why this issue is occurring on Solaris9.

What could be the possible fix.

Thanks in advance.
Devika