How To Fix CNV_IUUC_REPLICATION331 - Error occurred when opening DB connection

CNV_IUUC_REPLICATION331 - Overview

• Message type: E = Error

• Message class: CNV_IUUC_REPLICATION - IUUC replication messages (HANA)

• Message number: 331

• Message text: Error occurred when opening DB connection

An error occurred while trying to establish the connection to the target
system. Possible reasons for this include:
Wrong user name or password.
The target system is not responding, or is down.
An invalid host name was entered.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

CNV_IUUC_REPLICATION331 - Details

• The SAP error message CNV_IUUC_REPLICATION331 indicates that there was an issue when trying to open a database connection during the data replication process. This error is often encountered in the context of SAP Landscape Transformation (SLT) or when using SAP Data Services.
  Causes
  
  Database Connectivity Issues: The most common cause is a failure in the connection to the database. This could be due to network issues, incorrect connection parameters, or the database server being down.
  Configuration Errors: Incorrect configuration settings in the SLT or Data Services setup can lead to this error. This includes wrong database credentials, incorrect database hostnames, or port numbers.
  Database Permissions: The user account being used to connect to the database may not have the necessary permissions to access the required database objects.
  Resource Limitations: The database server may be experiencing resource limitations, such as memory or connection limits, which can prevent new connections from being established.
  Firewall or Security Settings: Firewalls