Impact of Running Only appian_services_stop Without Full Shutdown Sequence

Question

Hi everyone, 
 We recently encountered performance issues in our development environment and requested a restart. Before the full sequence could be executed, we have ran only:

Code: appian_services_stop 
 
 followed by starting it again without stopping the other components:

appian_appserver_stop 
appian_searchserver_stop appian_services_stop appian_dataserver_stop

We&rsquo;d like to understand from the community:

What are the potential risks or side effects of restarting only appian_services_stop ?

Could this lead to instability or partial recovery?

Is there any known impact on data integrity, indexing, or service coordination?

Appreciate any insights or experiences you can share. 
 Thanks,

Varun Teja Gurrapu · Answer

Hi ahmadb3492 , AFAIK, restarting only appian_services_stop does have few consequences. 1. Any active processes, tasks, or timers may lose connection in mid-execution 2. Since only services restarted, other components like AppServer, DataServer, SearchServer won’t reset to their previous state. 3. This error may possibly occur : Unable to connect to process execution engine .(Personally, I've faced this). 4. you could see indexing failures or missing results. 5. There will be no Data integrity issues, because rollback feature handles retries. Its always recommended to restart the whole environment, instead of just restarting the Appian Services, Then a dull backup will be completed, or else you may face lot of instablities, process failures, slowness. For a instance, I've written code for the batch scripts to start and stop the servers, just change the path and password in the below script and save the script as start.bat/stop.bat For starting the Appian Server, code follows: start.bat @echo off set APPIAN_HOME=C:\Appian\Appian echo Starting Appian Engines... call "%APPIAN_HOME%\services\bin\start.bat" -p "" -s all echo Starting Data Server... call "%APPIAN_HOME%\data-server\bin\start.bat" echo Starting Search Server... call "%APPIAN_HOME%\search-server\bin\start.bat" echo Starting App Server (Tomcat)... call "%APPIAN_HOME% omcat\apache-tomcat\bin\start-appserver.bat" echo Appian has been started successfully. pause For stopping the Appian Server, code follows: stop.bat @echo off set APPIAN_HOME=C:\Appian\Appian echo Stopping Appian Engines... call "%APPIAN_HOME%\services\bin\stop.bat" -p "" -s all echo Stopping Data Server... call "%APPIAN_HOME%\data-server\bin\stop.bat" echo Stopping Search Server... call "%APPIAN_HOME%\search-server\bin\stop.bat" echo Stopping App Server (Tomcat)... call "%APPIAN_HOME% omcat\apache-tomcat\bin\stop-appserver.bat" echo Appian has been stopped successfully. pause Note : Create.bat files and put it in any folder, Run cmd as Administrator and call the files as start.bat or stop.bat. I've ran the script in my pc, its working fine for On-premise server Check the below screenshots: Hope this helps you!!!

Shubham Aware · Answer

As per my understanding, Restarting only appian_services_stop can cause instability, partial recovery, and indexing issues but usually does not affect data integrity. It&rsquo;s best to fully restart all components for proper coordination and stable performance.