Installing SQL Developer on network drive: Missing Class: oracle.javatools.db.DBLog (Doc ID 1064211.1)

Last updated on MARCH 03, 2025

Applies to:

Symptoms

Downloaded Oracle SQL Developer, unzipped it and when started the application received error message.

## Error Message ###
oracle.classloader.util.AnnotatedNoClassDefFoundError:

Missing class: oracle.javatools.db.DBLog

Dependent class: oracle.jdeveloper.db.DatabaseConnectionStores
Loader: ide-global:11.1.1.0.0
Code-Source: //<Install_Path>/sqldeveloper-2.1.0.63.73/sqldeveloper/jdev/extensions/oracle.jdeveloper.db.connection.jar
Configuration: extension jar in \\<Install_Path>\sqldeveloper-2.1.0.63.73\sqldeveloper\jdev\extensions

The missing class is not available from any code-source or loader in the system.
at oracle.classloader.PolicyClassLoader.handleClassNotFound (PolicyClassLoader.java:2180) [//<Install_Path>/sqldeveloper-2.1.0.63.73/sqldeveloper/modules/oracle.classloader_11.1.1.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@27355241]
at oracle.classloader.PolicyClassLoader.internalLoadClass (PolicyClassLoader.java:1733) [//<Install_Path>/sqldeveloper-2.1.0.63.73/sqldeveloper/modules/oracle.classloader_11.1.1.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@27355241]
at oracle.classloader.PolicyClassLoader.access$000 (PolicyClassLoader.java:143) [//<Install_Path>/sqldeveloper-2.1.0.63.73/sqldeveloper/modules/oracle.classloader_11.1.1.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@27355241]
at oracle.classloader.PolicyClassLoader$LoadClassAction.run (PolicyClassLoader.java:331) [//<Install_Path>/sqldeveloper-2.1.0.63.73/sqldeveloper/modules/oracle.classloader_11.1.1.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@27355241]
at java.security.AccessController.doPrivileged (Native method) [unknown, by unknown]
at oracle.classloader.PolicyClassLoader.loadClass (PolicyClassLoader.java:1692) [//<Install_Path>/sqldeveloper-2.1.0.63.

Cause

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