Oracle 12c Checklist
Upgrading to Oracle 12c
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If using Java 7, use the ojdbc7.jar
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If using Java 6, use the ojdbc6.jar
- Both downloadable from Oracle (Search for 12c Drivers).
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Use the org.hibernate.dialect.Oracle10gDialect in all applications
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Update the actionservice hibernate properties to actionservice.hibernateProperties=actionservice.defaultProperties
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Update your oracle/network/admin/slqnet.ora File
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SQLNET.ALLOWED_LOGON_VERSION=8
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In 12.1, the default value for the SQLNET.ALLOWED_LOGON_VERSION parameter has been updated to 11. This means that database clients using pre-11g JDBC thin drivers cannot authenticate to 12.1 database servers unless the SQLNET.ALLOWED_LOGON_VERSION parameter is set to the old default of 8.
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Note that the SQLNET.ALLOWED_LOGON_VERSION parameter has been deprecated in 12c. The parameter has been replaced with:
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SQLNET.ALLOWED_LOGON_VERSION_SERVER