How To Fix S_UNIFIED_CON_API075 - Lock for virtual host &1 can not be released.

SAP Error Message - Details

• Message type: E = Error

• Message class: S_UNIFIED_CON_API - Messages for API for Unified Connectivity

• Message number: 075

• Message text: Lock for virtual host &1 can not be released.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message S_UNIFIED_CON_API075 - Lock for virtual host &1 can not be released. ?

  The SAP error message S_UNIFIED_CON_API075 indicates that there is a lock on a virtual host that cannot be released. This typically occurs in the context of SAP systems that utilize the Unified Connectivity (UCON) framework, which manages connections to various services and systems.
  Cause:
  The error can be caused by several factors, including:
  
  Active Sessions: There may be active sessions or processes that are holding onto the lock for the virtual host.
  Configuration Issues: Misconfiguration in the virtual host settings or connection parameters can lead to locking issues.
  System Resource Constraints: Insufficient system resources (like memory or CPU) can prevent the release of locks.
  Deadlocks: A deadlock situation may occur where two or more processes are waiting for each other to release locks.
  Network Issues: Problems in the network can lead to timeouts or failures in releasing locks.
  
  Solution:
  To resolve the issue, you can take the following steps:
  
  
  Identify Active Sessions: Use transaction codes like SM50 or SM66 to check for active processes that might be holding the lock. You can terminate any unnecessary processes.
  
  
  Check Configuration: Review the configuration settings for the virtual host in the SAP system. Ensure that all parameters are correctly set.
  
  
  Restart Services: If possible, restart the services or the application server that is managing the virtual host. This can help in releasing any locks that are stuck.
  
  
  Monitor System Resources: Check the system's resource usage. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  Review Logs: Check the system logs (transaction SLG1) for any related error messages that might provide more context on the issue.
  
  
  Deadlock Resolution: If you suspect a deadlock, you may need to analyze the processes involved and resolve the deadlock situation by terminating one of the processes.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. They may provide patches or specific guidance based on your system configuration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for Unified Connectivity and virtual host management for best practices and configuration guidelines.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the S_UNIFIED_CON_API075 error message.