How To Fix SY443 - The specified instance is not active

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 443

• Message text: The specified instance is not active

What causes this issue?

The object display in the debugger contains an object reference.
However, the garbage collector has recognized the object as garbage and
"collected" it. This means that the object reference is no longer
valid.
Background Information:
ABAP Objects has its own automatic memory management for objects. When
an object is no longer accessible using any object- or interface
references, the memory management ("garbage collector") releases the
memory space that the object had been occupying. This space can then be
reused by a later CREATE OBJECT statement.

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

System Response

How to fix this error?

Enter a valid object index. All object references shown in the Debugger
are valid. It is better to navigate to the object display by
double-clicking on the reference value than to enter the object index
directly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SY443 - The specified instance is not active ?

  The SAP error message SY443, which states "The specified instance is not active," typically occurs in the context of SAP systems when there is an attempt to access or interact with an instance (such as a database instance or application server) that is not currently active or running. This can happen in various scenarios, such as when trying to connect to a database, execute a transaction, or perform a system operation.
  Causes of SY443 Error
  
  
  Inactive Instance: The most common cause is that the instance you are trying to access is not currently active. This could be due to the instance being stopped, crashed, or not started properly.
  
  
  Configuration Issues: There may be configuration issues in the SAP system that prevent the instance from being recognized as active.
  
  
  Network Issues: If the instance is on a different server, network connectivity issues could prevent access to the instance.
  
  
  System Maintenance: The instance may be undergoing maintenance or updates, leading to temporary inactivity.
  
  
  Incorrect Instance Name: The specified instance name may be incorrect or misspelled, leading to the system not being able to find the active instance.
  
  
  Solutions to SY443 Error
  
  
  Check Instance Status:
  
  Use the SAP Management Console (SAP MC) or transaction code SM51 to check the status of the application servers and ensure that the instance you are trying to access is indeed active.
  
  
  
  Start the Instance:
  
  If the instance is inactive, you may need to start it. This can typically be done through the SAP Management Console or by using the appropriate command in the operating system.
  
  
  
  Verify Configuration:
  
  Check the configuration settings in the SAP system to ensure that the instance is correctly defined and that there are no discrepancies in the instance parameters.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing access to the instance. You can test connectivity using ping or other network diagnostic tools.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and developer traces (transaction ST22) for any errors or warnings that might provide more context about why the instance is not active.
  
  
  
  Consult Basis Team:
  
  If you are unable to resolve the issue, it may be necessary to consult your SAP Basis team or system administrator for further assistance.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM51: Display Instances
  SM21: System Log
  ST22: Dump Analysis
  SMLG: Logon Groups
  
  
  
  SAP Notes: Check SAP Notes for any specific issues related to your version of SAP that might provide additional insights or patches.
  
  
  Documentation: Refer to the official SAP documentation for your specific version for more detailed troubleshooting steps and best practices.
  
  
  By following these steps, you should be able to diagnose and resolve the SY443 error in your SAP environment.