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From: Christopher Douglas <cdouglas@apache.org> git-svn-id: https://svn.apache.org/repos/asf/incubator/sqoop/trunk@1149834 13f79535-47bb-0310-9956-ffa450edef68
56 lines
2.5 KiB
Plaintext
56 lines
2.5 KiB
Plaintext
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////
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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////
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Supported Databases
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-------------------
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Sqoop uses JDBC to connect to databases. JDBC is a compatibility layer
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that allows a program to access many different databases through a common
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API. Slight differences in the SQL language spoken by each database, however,
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may mean that Sqoop can't use every database out of the box, or that some
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databases may be used in an inefficient manner.
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When you provide a connect string to Sqoop, it inspects the protocol scheme to
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determine appropriate vendor-specific logic to use. If Sqoop knows about
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a given database, it will work automatically. If not, you may need to
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specify the driver class to load via +--driver+. This will use a generic
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code path which will use standard SQL to access the database. Sqoop provides
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some databases with faster, non-JDBC-based access mechanisms. These can be
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enabled by specfying the +--direct+ parameter.
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Sqoop includes vendor-specific code paths for the following databases:
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[grid="all"]
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`-----------`--------`--------------------`---------------------
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Database version +--direct+ support? connect string matches
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----------------------------------------------------------------
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HSQLDB 1.8.0+ No +jdbc:hsqldb:*//+
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MySQL 5.0+ Yes +jdbc:mysql://+
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Oracle 10.2.0+ No +jdbc:oracle:*//+
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PostgreSQL 8.3+ Yes +jdbc:postgresql://+
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----------------------------------------------------------------
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Sqoop may work with older versions of the databases listed, but we have
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only tested it with the versions specified above.
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Even if Sqoop supports a database internally, you may still need to
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install the database vendor's JDBC driver in your +$HADOOP_HOME/lib+
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path.
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