Release Notes 4.5

The 4.5 release notes were released on December 5th, 2023

Compatibility Matrix

System Requirement


Supported OS

  • CentOS 7.x

  • RHEL 7.x / 8.x

supported Nvidia driver

CUDA version from 10.1 up to 11.4.3

Storage version


Driver compatibility

  • JDBC 5.0.0

  • ODBC 4.4.4

  • NodeJS

  • .NET 5.0.0

  • Pysqream 5.0.0

  • Spark

SQream Acceleration Studio

Version 5.7.0

New Features and Enhancements

► Introducing a new Health-Check Monitor utility command empowers administrators to oversee the database’s health. This command serves as a valuable tool for monitoring, enabling administrators to assess and ensure the optimal health and performance of the database

► A new Query Timeout session flag designed to identify queries that have exceeded a specified time limit. Once the flag value is reached, the query automatically stops

► Optimized JOIN operation for improved performance with large tables

Known Issues

Version 4.5 resolved Issues

SQ No.



Resolved internal runtime issue affecting the datetime saved query


Resolved maxConnections Worker allocation issue


Optimized compilation time for improved performance with large metadata


Addressed UI access issue for non-SUPERUSER roles


CentOS Linux 7.x

  • As of June 2024, CentOS Linux 7.x will reach its End of Life and will not be supported by SQreamDB. This announcement provides a one-year advance notice for our users to plan for this change. We recommend users to explore migration or upgrade options to maintain ongoing support and security beyond this date.

  • REHL 8.x is now officially supported.

Upgrading to Version 4.5

  1. Generate a back-up of the metadata by running the following command:

    $ select backup_metadata('out_path');


    SQreamDB recommends storing the generated back-up locally in case needed.

    SQreamDB runs the Garbage Collector and creates a clean backup tarball package.

  2. Shut down all SQreamDB services.

  3. Copy the recently created back-up file.

  4. Replace your current metadata with the metadata you stored in the back-up file.

  5. Navigate to the new SQreamDB package bin folder.

  6. Run the following command:

    $ ./upgrade_storage <levelDB path>
  7. Version 4.4 introduces a service permission feature that enables superusers to grant and revoke role access to services. However, when upgrading from version 4.2 or earlier to version 4.4 or later, this feature initializes access to services, causing existing roles to lose their access to services.

There are two methods of granting back access to services:


Upgrading from a major version to another major version requires you to follow the Upgrade Storage step. This is described in Step 7 of the Upgrading SQreamDB Version procedure.