Error when startup database

From: JK Yao <jkyf0131_at_hotmail.com>
Date: 12 Aug 2001 21:25:42 -0700
Message-ID: <93f65984.0108122025.5b14f71b@posting.google.com>

dear all,

When I startup my Oracle8.1.6 database, there are following msg. Anyone know how to solve this problems? Please help. Thanks in advance,

JK

---

ORA-01157: cannot identify/lock data file 1 - see DBWR trace file ORA-01110: data file 1: '/data2/P8/system01.dbf' Received on Sun Aug 12 2001 - 23:25:42 CDT