求助！rman报告错误

请问高手这是什么问题？
注：两台为HA双机，用户曾经手动改过系统时间会导致这样的问题么？如何解决？谢谢
RMAN> report sobelete;

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "identifier": expecting one of: "device, need, o
bsolete, schema, unrecoverable"
RMAN-01008: the bad identifier was: sobelete
RMAN-01007: at line 1 column 8 file: standard input

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found ";": expecting one of: "allocate, alter, backup,
beginline, blockrecover, catalog, change, connect, copy, convert, create, cross
check, configure, duplicate, debug, delete, drop, exit, endinline, flashback, ho
st, {, library, list, mount, open, print, quit, recover, register, release, repl
ace, report, renormalize, reset, restore, resync, rman, run, rpctest, set, setli
mit, sql, switch, spool, startup, shutdown, send, show, test, transport, upgrade
, unregister, validate"
RMAN-01007: at line 1 column 16 file: standard input

[ 本帖最后由 xi_org 于 2008-11-25 09:43 编辑 ]