Address not mapped to object

I have a system, oracle 9.2.0.4, linux ras4, 4g mem, 32 bit

I enable Using Very Large Memory (VLM) in linux ras4 to use >1.7 g mem.

run the following command on linux system
# umount /dev/shm
# mount -t ramfs ramfs /dev/shm
# chown oracle:dba /dev/shm

Add the following parameter into init.ora file. use_indirect_data_buffers=true

Then I enable asyno
1. I patch 9204 using metalink Note:279069.1. for Asynchronous I/O Support
2. Enable oracle
su - oracle

$ cd $ORACLE_HOME/rdbms/lib
$ make -f ins_rdbms.mk async_on
$ make -f ins_rdbms.mk ioracle

3. Add parameters
disk_asynch_io=true
filesystemio_options=asynch

Now I enable vlm and asynchronous

When I run the command
SQL> exec statspack.snap;

In alert log file
"Errors in file /oracle/admin/pftest/udump/pftest_ora_26698.trc: ORA-07445: exception encountered: core dump [00B03540] [SIGSEGV] [Address not mapped to object] [0x1] [] []"

In the trace file
*** SESSION ID:(10.12) 2006-10-04 16:20:34.118 Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x
1, PC: [0xb03540, Cannot find symbol in /usr/lib/libaio.so.1.0.0. 00B03540]"

But when set the parameter use_indirect_data_buffers=false; and the error disappear. Could you help on this one?

Thanks in advance! Received on Wed Oct 04 2006 - 04:00:42 CDT