RealmFileException: Top ref outside file

[JoyHong]

main(1)

io.realm.exceptions.RealmFileException

Unable to open a realm at path '/data/data/packageName/files/userprofile.realm': Top ref outside file (size = 108824). top_ref[0]: 1AA78, top_ref[1]: 1A9F8, mnemonic: 54 2D 44 42, fmt[0]: 9, fmt[1]: 9, flags: 0 Path:. (Top ref outside file (size = 108824). top_ref[0]: 1AA78, top_ref[1]: 1A9F8, mnemonic: 54 2D 44 42, fmt[0]: 9, fmt[1]: 9, flags: 0 Path: /data/data/packageName/files/userprofile.realm) (/data/data/packageName/files/userprofile.realm) in /Users/cm/Realm/realm-java-release/realm/realm-library/src/main/cpp/io_realm_internal_OsSharedRealm.cpp line 101

The relation crash report so much that i don't known how to fix it, can u please give me a help?

[bmunkholm]

@JoyHong IS this from a user or something you can reproduce? Which version of Realm are you using?
Please use the issue template to report issues as that ensures to answer some questions.
Can you provide the realm file?

[JoyHong]

Sorry，the issue is reported from Google Play console

I can not reproduce it

[cmelchior]

Are you using encryption?

[JoyHong]

No

[Zhuinden]

Are you by any chance using pre-bundled Realm file or downloading it from remote?

File copying can fail and you'd end up with an incomplete file. It's happened to me before.

[lucaspommateau]

Hello,
I have the same error in production, on an Android application.

• Realm version: 6.1.0

Stacktrace

Fatal Exception: io.realm.exceptions.RealmFileException: Unable to open a realm at path '/data/data/mypackage/files/my_database.realm': Top ref outside file (size = 458752). top_ref[0]: 3031500000410E0, top_ref[1]: 46020200, mnemonic: 54 2D 44 42, fmt[0]: 9, fmt[1]: 9, flags: 0 Path:Exception backtrace:
<backtrace not supported on this platform>. (Top ref outside file (size = 458752). top_ref[0]: 3031500000410E0, top_ref[1]: 46020200, mnemonic: 54 2D 44 42, fmt[0]: 9, fmt[1]: 9, flags: 0 Path: /data/data/mypackage/files/my_database.realm
Exception backtrace:
<backtrace not supported on this platform>) (/data/data/mypackage/files/my_database.realm) in /Users/cm/Realm/realm-java-release/realm/realm-library/src/main/cpp/io_realm_internal_OsSharedRealm.cpp line 101
     at io.realm.internal.OsSharedRealm.nativeGetSharedRealm(OsSharedRealm.java)
     at io.realm.internal.OsSharedRealm.<init>(OsSharedRealm.java:171)
     at io.realm.internal.OsSharedRealm.getInstance(OsSharedRealm.java:241)
     at io.realm.internal.OsSharedRealm.getInstance(OsSharedRealm.java:231)
     at io.realm.RealmCache.doCreateRealmOrGetFromCache(RealmCache.java:337)
     at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java:290)
     at io.realm.Realm.getDefaultInstance(Realm.java:407)
     at com.groupeseb.moddatatracking.api.data.local.EventLocalDataSource$12.run(EventLocalDataSource.java:206)
     at android.os.Handler.handleCallback(Handler.java:900)
     at android.os.Handler.dispatchMessage(Handler.java:103)
     at android.os.Looper.loop(Looper.java:219)
     at android.app.ActivityThread.main(ActivityThread.java:8347)
     at java.lang.reflect.Method.invoke(Method.java)
     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1055)

• Device:
  
• Version:
  
• I do not use encryption
• I do not use pre-bundled realm file or downloaded one
  I have no reproduction 😞

[cmelchior]

Since the underlying implementation changed drastically in Realm Java 7.0.0. I'm closing this as outdated. Please re-open if you are still seeing this on 7.0.2 and above.