{"record":{"id":"b9d915fed9978ac3","repo":"apache/shardingsphere","slug":"getclientinfo-name","errorCode":null,"errorMessage":"getClientInfo name","messagePattern":"getClientInfo name","errorType":"exception","errorClass":"SQLFeatureNotSupportedException","httpStatus":null,"severity":"error","filePath":"jdbc/src/main/java/org/apache/shardingsphere/driver/jdbc/unsupported/AbstractUnsupportedOperationConnection.java","lineNumber":124,"sourceCode":"    \n    @Override\n    public final SQLXML createSQLXML() throws SQLException {\n        throw new SQLFeatureNotSupportedException(\"createSQLXML\");\n    }\n    \n    @Override\n    public final Struct createStruct(final String typeName, final Object[] attributes) throws SQLException {\n        throw new SQLFeatureNotSupportedException(\"createStruct\");\n    }\n    \n    @Override\n    public final Properties getClientInfo() throws SQLException {\n        throw new SQLFeatureNotSupportedException(\"getClientInfo\");\n    }\n    \n    @Override\n    public final String getClientInfo(final String name) throws SQLException {\n        throw new SQLFeatureNotSupportedException(\"getClientInfo name\");\n    }\n    \n    @Override\n    public final void setClientInfo(final String name, final String value) {\n        throw new UnsupportedSQLOperationException(\"setClientInfo name value\");\n    }\n    \n    @Override\n    public final void setClientInfo(final Properties props) {\n        throw new UnsupportedSQLOperationException(\"setClientInfo properties\");\n    }\n}\n","sourceCodeStart":106,"sourceCodeEnd":137,"githubUrl":"https://github.com/apache/shardingsphere/blob/e952770a215630a3659c75d64369168cd3e26b82/jdbc/src/main/java/org/apache/shardingsphere/driver/jdbc/unsupported/AbstractUnsupportedOperationConnection.java#L106-L137","documentation":"ShardingSphere's JDBC driver does not implement the java.sql.Connection method getClientInfo name (reading a single named JDBC 4 client info property from the connection). The abstract base class AbstractUnsupportedOperationConnection, which ShardingSphereConnection extends, overrides it as final and unconditionally throws SQLFeatureNotSupportedException. ShardingSphere does not store per-connection client info, so the name-based getter always throws. The exception is thrown the moment the method is invoked on any connection produced by the ShardingSphere Driver.","triggerScenarios":"Calling Connection.getClientInfo(name) with any property name on a ShardingSphere connection.","commonSituations":"APM/monitoring agents reading specific markers (e.g. 'comment' or vendor tags like ApplicationName); pool request-context propagation reading a per-request property.","solutions":["Guard the call: catch SQLFeatureNotSupportedException and treat client info as unavailable, or check connection.getMetaData().getClientInfoProperties() emptiness first.","Move per-request correlation data to MDC/ThreadLocal-based tracing instead of JDBC client info.","Unwrap the native connection only if the backend driver itself was configured with client info outside ShardingSphere."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"boolean supportsOp = false;\ntry {\n    connection.getMetaData(); // connection is alive\n    // JDBC has no capability flag for individual methods; probe once per JVM:\n    supportsOp = probeSupport(connection); // reflective/one-time guarded call\n} catch (final SQLException ignored) {\n}\n// Simpler and recommended: capability-check by driver URL\nboolean isShardingSphere = url.startsWith(\"jdbc:shardingsphere:\");\nif (isShardingSphere) {\n    // skip the unsupported call, use the alternative API path\n}","typeGuard":null,"tryCatchPattern":"try {\n    connection.getClientInfo(/* args */);\n} catch (final SQLFeatureNotSupportedException e) {\n    // expected on ShardingSphere connections: fall back to supported API\n    log.debug(\"Driver does not support getClientInfo name, using fallback\", e);\n}","preventionTips":["Read connection metadata from getMetaData() instead of named client-info properties.","Check the JDBC URL before calling optional JDBC 4 methods: connections starting with jdbc:shardingsphere: never support the lob/network-timeout/client-info/callable APIs.","Catch java.sql.SQLFeatureNotSupportedException (parent of ShardingSphere's UnsupportedSQLOperationException) around optional driver-capability calls so the application degrades gracefully."],"tags":["jdbc","shardingsphere","unsupported-operation","connection-api"],"backgroundTag":null,"analyzedSha":"e952770a215630a3659c75d64369168cd3e26b82","analyzedAt":"2026-08-14T13:54:53.392Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}