ESXi Configuration Backup Failure

This article describes how to troubleshoot issues related to ESXi configuration backup failure.

This article applies to:

  • Acronis Backup for VMware
  • Acronis vmProtect


ESXi host configuration backup can be used to quickly recover the ESXi server, allows to rollback the server configuration to the state when the backup was created.



  1. You have a large vSphere environment, with several ESXi hosts and 1000+ virtual machines
  2. You install Agent for VMware and connect it to vCenter.
  3. You try to run a ESXi configuration backup for a host and the backup fails with one of the following errors:

    too many SQL variables


    Command definition 'SELECT ... '  not found.

Example of error log: