Search Issue Tracker
Fixed in 2021.1.X
Fixed in 2019.4.X, 2020.1.X, 2020.2.X
Votes
0
Found in
2019.3.0a1
2019.3.0b8
2020.1
Issue ID
1208749
Regression
Yes
Crash on mdb_txn_begin when SourceAssetDB has a lock on it from another process
Steps to reproduce:
1. Create a new user or make sure you already have a secondary Windows user
2. Create a new project (possible to skip this if you already have one)
3. Navigate to the project's folder and open Library
4. Find SourceAssetDB file
5. Make it non-readable for the other Windows user (Right-click -> Properties -> Security -> Edit... -> Choose the other user -> Tick "Deny" or Read permission)
6. Log into the other user
7. Attempt to open the project
Reproducible with: 2019.3.0a1, 2019.3.0f6, 2020.1.0a21
Not reproducible with:2017.4.36f1, 2018.4.16f1, 2019.2.20f1
First lines of the stacktrace:
0x00007FF66E4E646F (Unity) mdb_txn_begin
0x00007FF66C2058C2 (Unity) LMDB_Transaction::Open
0x00007FF66C20255A (Unity) LMDB_Transaction::LMDB_Transaction
0x00007FF66C1B8324 (Unity) IsSourceAssetDBVersionCorrect
0x00007FF66C1E5452 (Unity) InitializeAssetDatabaseV2
Notes:
- Versions deemed not reproducible doesn't have SourceAssetDB file in the Library at all
- Usually reproducible by the users when trying to open a project created on another Windows account while the initial account is completely logged off
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Long Prefab save times when using Unity 2022.2 and higher
- Console displays error "UnityException: Creating asset at path Assets/Scenes/ .scenetemplate failed." during scene template saving
- "Development Build" watermark is shown in non-development UWP release builds
- Console errors appear when the Inspector is set to Debug and a GameObject is selected
- A script public variable value is not used when set in the Inspector window
Resolution Note (fix version 2021.1):
Fixed in 2021.1.0a4
An error window was implemented, which informs that some of the processes are locked thus preventing Unity to open that specific project.
Resolution Note (fix version 2020.2):
Fixed in 2020.2.0b12
Resolution Note (fix version 2020.1):
Fixed in 2020.1.14f1
Resolution Note (fix version 2019.4):
Fixed in: 2019.4.23f1