Fixing Snowflake connection failure caused by JDBC driver NullPointerException [Linux] | Knowledge Base Docs

Ihor Yokhym · 2026-06-10T11:14:52.708814Z

IntroductionResolve the Snowflake JDBC driver "HTTP request: null" communication error in Sisense (Cloud and On-Premises). This guide outlines how to upgrade the Snowflake JDBC driver to version 3.24.2 or later to bypass a known NullPointerException bug.Step-by-Step GuideSymptomWhen attempting to connect to Snowflake, the connection fails, and the logs display the following error message:Code Type: Error MessageJDBC driver encountered communication error. Message: Exception encountered for HTTP request: null.This behavior stems from a known issue within the Snowflake JDBC driver itself (SNOW-1958601: NullPointerException for cacheFile in net.snowflake:snowflake-jdbc:3.23.0). The issue is resolved in connector version 3.23.2 and later or upgrade to Sisense version 2026.2.1+. To completely safeguard your environment, follow the steps below to upgrade to version 3.24.2.Step 1: Download the Updated JDBC DriverDownload the stable snowflake-jdbc-3.24.2.jar file or later directly from the official Snowflake repository or Maven Central.Maven repository: download driverSnowflake documentationStep 2: Upload the Driver to File ManagementNavigate to the File Management section on your Sisense server and upload the newly downloaded .jar file to the target Snowflake connector directory./connectors/framework/SnowflakeJDBC/[Screenshot: Sisense File Management interface showing the SnowflakeJDBC directory] Description: The image shows the Sisense File Management browser with the snowflake-jdbc-3.24.2.jar file successfully uploaded into the connectors framework directory.Step 3: Update the Connector ConfigurationOpen the Sisense Admin portal.Navigate to Service Configuration → Manage Connectors → SnowflakeJDBC.Update the configuration properties to point directly to the new driver version (3.24.2).[Screenshot: Service Configuration UI for Manage Connectors] Description: This screenshot highlights the driver version field within the SnowflakeJDBC configuration menu where the version number needs to be updated.Step 4: Restart the Query ServiceTo apply the changes and force Sisense to initialize the new JDBC driver, restart the Query service.ConclusionA known NullPointerException bug in the 3.23.0 Snowflake JDBC driver causes connection handshakes to fail with a generic null HTTP request error. Upgrading your Sisense environment to use the 3.24.2 driver patch (or later) via Service Configuration and executing a Query service restart successfully resolves the communication roadblock.References/Related Content Maven repository: download driverSnowflake documentationGitHub Issue #2105: snowflakedb/snowflake-jdbc NullPointerException

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Fixing Snowflake connection failure caused by JDBC driver NullPointerException [Linux] | Knowledge Base Docs | Sisense Community