oracle 报错 ora-00905

Question

report如下,求大神来看看
在行: 99 上开始执行命令时出错 -
ALTER TABLE vet ADD CONSTRAINT vetpractice_vet_fk
FOREIGN KEY (vetpractice_no, pet_no, owner_no)
REFERENCES vetpractice (vetpractice_no, pet_no, owner_no)
ON DELETE NO ACTION
ON UPDATE NO ACTION
NOT DEFERRABLE
错误报告 -
SQL 错误: ORA-00905: 缺失关键字
00905. 00000 - "missing keyword"
*Cause:

*Action:

Answer 1

http://blog.sina.com.cn/s/blog_497f9dda0100bq0g.html
http://bbs.csdn.net/topics/380232679

http://www.educity.cn/wenda/601927.html
http://blog.sina.com.cn/s/blog_87fd9d98010189z6.html

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