Exceptions and database connection

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I have a code that query a database. If a timeout exception occurs for example during the execution of the query, the connection closure code and consequent return of the connection to the pool will not occur, I must use a Try-Finally to even with exception pass through the connection closure code?

java database connection
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    It is considered good practice for you to close connections with bank in block finally precisely so that, in case of success or error, it always be closed.

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should use a Try-Finally for even with exception pass through connection lock code?

Yes.

If you are using Java 7 or higher you can use Try-with-Resources.

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