该函数将错误代码和一个预分配的缓冲区作为参数。
It takes the error code and a pre-allocated buffer as its parameters.
如果我们真的要“预分配”，我们必须利用其增长的变量，这是不明确和。
And if we really need to "pre-allocate", we has to make use of its grow-by variable, which is unclear and.
还会让您为数据库和事务输入预分配的大小。
It also asks you to enter a pre-allocated size for the database and transactions.
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