这个函数尝试关闭以前打开的数据库连接。

This function attempts to close the previously opened database connection.

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打开一个命令提示并连接到数据库。

Open a command prompt and connect to the database.

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这时将打开新的数据库连接窗口，如上所示。

The new database connection window will open, as shown above.

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打开DB 2命令窗口并建立数据库连接。

Open a DB2 command window and establish the database connection.

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打开命令提示并连接到数据库。

Open a command prompt and connect to the database

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所以打开后关闭它一个数据库连接。

So after opening a DB connection you close it.

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数据库已按独占方式打开。无法保存对连接属性所做的更改。

The database is already open in exclusive mode. Changes to connection properties cannot be saved.

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数据库已按独占方式打开。无法保存对连接属性所做的更改。

The database is already open in exclusive mode. Changes to connection properties cannot be saved.

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