生成密钥时出现ora-00600错误

[bayueguihuaxiang]

alter system set encryption key identified by "hy119"
*
第 1 行出现错误:
ORA-00600: 内部错误代码, 参数: [ztsmsmkh:set basic key failed], [18446744073709551615], [], [], [], [], [], [], [], [],
[], []


请问这是什么原因啊？应该怎么就解决啊？