How to connect to Oracle with datamapper jdbc adapter (in JRuby) and check connection? -

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How to check the connection from the Oracle to the JDBC adapter (in jereb) and the connection? I do not understand the documentation: D

If you have some examples, please give me

Adapter = DataMaper.setup (: default, 'oracle: // user: password @ host /' ORCL ')

z = adapter.select (' Select from 1 to double ' )


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