8000 The Realm is already in a write transaction · Issue #6991 · realm/realm-js · GitHub
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The Realm is already in a write transaction #6991

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feidaZhang opened this issue Apr 8, 2025 · 1 comment
Open

The Realm is already in a write transaction #6991

feidaZhang opened this issue Apr 8, 2025 · 1 comment
Labels
Encryption:Off Frequency:Sometimes O-Community Repro:Sometimes SDK-Use:Local T-Bug

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@feidaZhang
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How frequently does the bug occur?

Sometimes

Description

I use realm in a reactnative project. My users encounter the issue sometimes. They must reopen app to fix it.
I always use write function to save data. like this, the exception is catched.

  public static saveTransaction(entity: any) {
    try {
      RealmManager.getRealmInstance().write(() => {
        RealmManager.getRealmInstance().create('Transaction', entity, UpdateMode.All);
      });
      return true;
    } catch (exception) {
      // upload log
      return false;
    }
  }

Findings

I am sure that no mutiple transactions at the same time because i only use one realm instance in the JS thread.
I realize that the issue happens if the device has low available storage on Android.
Some memory issues can also lead to the issue, eg can not allocate memory on iOS.

Questions

  • Should i let the app crash instead of catching the exception thrown by write?
  • What are the reasons of memory issues from realm on iOS? That has to reopen app and fix it.
    • mmap() failed: Cannot allocate memory size: 1048576 offset: 60817408
    • std::bad_alloc
  • Why do we put commitTransaction outside of the try block? The cancelTransaction may not be called rightly. In the comment, commitTransaction is catched. It has some confusion.
    write function
    write function
    comment on beginTransaction
    comment on beginTransaction

Stacktrace & log output



Can you reproduce the bug?


Sometimes


Reproduction Steps


No response


Version


12.6.2


What services are you using?


Local Database only


Are you using encryption?


No


Platform OS and version(s)


iOS and Android


Build environment


Which debugger for React Native: ..


Cocoapods version


No response

      		
    

      
  





        



            
            

              
            

        

      


      
    








      

    



      

  
            


    


    







      

  
      



  

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Also facing same issue here...

      		
    

  





        


            

            
            

              
            

        

      


      

            
  
  

    
  
    
    

  

  

  


    
















  
  

    

      

  





  




  
  

              

  
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    Encryption:Off

  

    Frequency:Sometimes

  

    O-Community

  

    Repro:Sometimes

  

    SDK-Use:Local

  

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      2 participants
    

    

        
          @feidaZhang 
        
          @kdirectoryxo 
    

  






    

    




    






  

          

        



    



  





    

  


  


          



    



  

    

    

    





    


    

    

  



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