SQLPlus尝试两次删除软件包 [英] SQLPlus is trying to drop package twice

问题描述

在SQLPlus中执行脚本时，我遇到了一个问题:

While executing scripts in SQLPlus I've encountered a problem:

script.sql包含以下几行

script.sql contains the following lines

@some_pkg.pks
@some_pkg.pkb

drop package some_pkg;
/

致电

> sqlplus用户/密码@dbname @ script.sql

以下消息在控制台中:

Package created.
Package body created.
Package dropped.

drop package some_pkg;
*
ERROR at line 1:
ORA-04043: object SOME_PKG does not exist

请解释一下这里发生的事情.好像包裹被丢了两次.有可能避免该错误吗?

Please, explain what's happening here. Looks like the package is being dropped twice. Is it possible to avoid the error?

推荐答案

SQLplus命令执行的规则基本上是:

The rules of SQLplus command execution basically are:

• 遇到分号时，请执行当前文本.因此，如果一行不以分号结尾，则将继续收集当前文本.
• 如果遇到DECLARE或BEGIN，请收集所有文本，不要使用分号执行
• 如果遇到斜线(/)，请执行收集的文本.

• Execute the current text when you encounter a semi-colon. Thus if a line doesn't end with a semi-colon, the current text continues to be collected.
• If you encounter DECLARE or BEGIN, collect all the text and do not execute on semi-colons
• If you encounter a slash (/), execute the collected text.

所以在您的情况下，分号和斜杠都执行DROP语句.

So what happens in your cases is, that both the semi-colon and the slash execute the DROP statements.

要解决此问题，请删除斜杠.

To fix it, remove the slash.

仅当您有一个PL/SQL块(始终带有END语句)时，才需要斜杠.将分号用于其他所有内容.

You only need the slash if you have a block of PL/SQL, which always with an END statement. Use semicolons for everything else.

注意:以上规则已简化.实际上更复杂.

Note: the above rules are simplified. It's more complex in practice.

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