数据库重启后，alter文件出现一下内容

Completed: /* OracleOEM */ ALTER DATABASE OPEN
Tue Feb 13 10:20:57 2007
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Created Undo Segment _SYSSMU19$
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Created Undo Segment _SYSSMU20$
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Created Undo Segment _SYSSMU21$
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Created Undo Segment _SYSSMU22$
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Created Undo Segment _SYSSMU23$
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Created Undo Segment _SYSSMU24$
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Created Undo Segment _SYSSMU25$
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Created Undo Segment _SYSSMU26$
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搞不明白啥意思？？

oracle是9201

os是win2003

没太大的问题。你的回滚段设置了自动管理。

你的数据库启动的时候进行多个回滚段的初始化，一般是sessons 参数比较大的原因。