This indicates an attack attempt against a buffer-overflow vulnerability in Oracle Database Server.
The vulnerability is caused by an error when the affected software handles a specially crafted SQL statement. It allows a remote attacker to inject arbitrary code.
Oracle Database 9i Release 2 version 184.108.40.206
Oracle Database 9i Release 2 version 220.127.116.11DV
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch, available from the website: