Hi all,

I attach the step by step procedure to perform a PostgreSQL Database upgrade.

PostgreSQL: CVE-2025-1094: PostgreSQL quoting APIs miss neutralizing quoting syntax in text that fails encoding validation

KB4386: Upgrading the SQL Database Engine Software (Microsoft SQL Server or PostgreSQL) Used by Veeam Backup & Replication

1. Ensure that there are no jobs or restore tasks occurring.
2. Manually Create a Configuration Backup.
3. (Optional) Create a backup of the Configuration Database.

1. Stop and Disable all Jobs
2. Stop all Veeam services on the Veeam Backup Server
3. Upgrade the SQL database software.
4. After the upgrade completes, restart the Veeam Backup Server

PostgreSQL Upgrade Procedure

1. Ensure all jobs, policies, and tasks are stopped, and those that are scheduled to run are disabled.
2. Stop all Veeam-related services on the Veeam Backup Server.
3. Get-Service Veeam* | Stop-Service -Force

1. Download the latest version of PostgreSQL that is compatible with Veeam Backup & Replication.
   Note: The most recent version of PostgreSQL may not be supported by Veeam Backup & Replication, it is critical that you check the compatibility list in the Veeam Backup & Replication User Guide for details.

• Identify VBR Database

$activeConfig = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations' -Name 'SqlActiveConfiguration').SqlActiveConfiguration
if ($activeConfig -eq "MsSql") {
    $sqlServerName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\MsSql' -Name 'SqlServerName').SqlServerName
    $sqlInstanceName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\MsSql' -Name 'SqlInstanceName').SqlInstanceName
    $sqlDatabaseName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\MsSql' -Name 'SqlDatabaseName').SqlDatabaseName
    Write-Host " Database Engine: $($activeConfig) "
    Write-Output "Connection Settings: $($sqlServerName)\$($sqlInstanceName)"
    Write-Output "Database Name: $($sqlDatabaseName)"
    } elseif ($activeConfig -eq "PostgreSql") {
    $pgServerName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\PostgreSql' -Name 'SqlHostName').SqlHostName
    $pgPortNumber = (Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\PostgreSql' -Name 'SqlHostPort')
    $pgDatabaseName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\PostgreSql' -Name 'SqlDatabaseName').SqlDatabaseName
    $pgUser = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup and Replication\DatabaseConfigurations\PostgreSql' -Name 'PostgresUserForWindowsAuth').PostgresUserForWindowsAuth
    Write-Host "Database Engine: $($activeConfig)"
    Write-Output "Connection Settings: $($pgServerName):$($pgPortNumber)"
    Write-Output "Database Name: $($pgDatabaseName)"
    Write-Output "PostgreSQL User: $($pgUser)"
} 

• Identify VEM Database

$activeConfig = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations' -Name 'SqlActiveConfiguration').SqlActiveConfiguration
if ($activeConfig -eq "MsSql") {
    $sqlServerName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\MsSql' -Name 'SqlServerName').SqlServerName
    $sqlInstanceName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\MsSql' -Name 'SqlInstanceName').SqlInstanceName
    $sqlDatabaseName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\MsSql' -Name 'SqlDatabaseName').SqlDatabaseName
    Write-Host " Database Engine: $($activeConfig) "
    Write-Output "Connection Settings: $($sqlServerName)\$($sqlInstanceName)"
    Write-Output "Database Name: $($sqlDatabaseName)"
    } elseif ($activeConfig -eq "PostgreSql") {
    $pgServerName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\PostgreSql' -Name 'SqlHostName').SqlHostName
    $pgPortNumber = (Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\PostgreSql' -Name 'SqlHostPort')
    $pgDatabaseName = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\PostgreSql' -Name 'SqlDatabaseName').SqlDatabaseName
    $pgUser = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Veeam\Veeam Backup Reporting\DatabaseConfigurations\PostgreSql' -Name 'PostgresUserForWindowsAuth').PostgresUserForWindowsAuth
    Write-Host "Database Engine: $($activeConfig)"
    Write-Output "Connection Settings: $($pgServerName):$($pgPortNumber)"
    Write-Output "Database Name: $($pgDatabaseName)"
    Write-Output "PostgreSQL User: $($pgUser)"
} 

• Check PostgreSQL version

• Backup PostgreSQL from CLI

Backup PostgreSQL from CLI
cd "C:\Program Files\PostgreSQL\15\BIN"
pg_dump -U postgres -d “yourDB-name” > C:\BackupPostgreSQL15\“yourDB-name” sql
pg_dump -U postgres -d “yourDB-name” > C:\BackupPostgreSQL15\“yourDB-name”.sql

• Lunch installer\upgrade

C:\temp\postgresql-15.11-1-windows-x64.exe --mode unattended --disable-components stackbuilder

Reboot VBR re – enable jobs check version PostgreSQL

regards & enjoy