Oracle 19c 与 jdk7 的兼容性

Question

I would like to know if oracle 19c is compatible with jdk 7.

I have found out 2 drivers for oracle 19c

• ojdbc8 : for jdk8, jdk9 and jdk11
• ojdbc10 : for jdk10 and jdk11

I would like to know if there is a way to have oracle 19c with a jdk7, and if yes what is the driver that will allow to do it ?

Answer 1

According to the Oracle JDBC FAQ (Question "What are the Oracle JDBC releases Vs JDK versions?"), only the Java versions you listed (Java 8 to 11) are supported for Oracle 19c.

• I expect that support for later Java versions will be added in the future.
• Java 9 and Java 10 were short-life releases, and are both end-of-life.

As a comment notes, Java 7 has been "end of life" since April 2015. It would be counter-productive for Oracle to encourage continued use of Java 7 by supporting it with new JDBC drivers for new Oracle database releases.

Note that the Oracle drivers are proprietary and source code is not available. So back-porting one of the Oracle 19c compatible drivers to Java 7 is not an option.

You may be able to identify a 3rd-party vendor who will provide (probably sell) you a driver that works. The best I could come up with is this old page that lists vendors:

• https://www.mindprod.com/jgloss/jdbcvendors.html

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In summary : If you want to use Oracle 19c with Oracle supported drivers, upgrading to Java 8 LTS or later is the only feasible solution. Upgrading to Java 11 LTS is advisable:

• Oracle Java 8 LTS free public updates (for commercial users) have ended, and Premium Support is due to end in March 2022; see the Oracle Java SE Support Roadmap .

• You can still get free public Java 8 LTS updates from 3rd-party vendors post 2020; see Java is Still Free for all of the details.

Answer 2

I can confirm the the ojdbc7.jar running on a JDK 7 will work connecting to an Oracle 19C server.

Looking at the Oracle JDBC FAQ it does not look like this is officially supported, however we have a current client in the process of upgrading their JDK, but we needed to support JDK 7 in the short term.

Our Oracle server was an AWS RDS instance, previously running Oracle 12C , but Amazon is no longer supporting this, and we were forced to upgrade to Oracle 19c .

We had some JDK 8 environments (container JBoss 7) which were already using ojdbc7.jar and these were fine. The JDK 7 environment (container JBoss 5.2) were using ojdbc6-11.2.0.1.0.jar and was failing with exception:

Caused by: java.sql.SQLException: ORA-28040: No matching authentication protocol

at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:388) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:381) at oracle.jdbc.driver.T4CTTIoauthenticate.processError(T4CTTIoauthenticate.java:427) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186) at oracle.jdbc.driver.T4CTTIoauthenticate.doOSESSKEY(T4CTTIoauthenticate.java:390) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:356) at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:531) at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:221) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503) at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:207

After switching from ojdbc6-11.2.0.1.0.jar to: ojdbc7.jar the application functioned normally.

Just a caveat, I quickly tested our application read/writing to the DB, and these worked as expected, your mileage may vary, as mentioned above this is not officially supported.