I forgot to mention that this exception happens (so far) from the service I
have for updating database (is executed every 24 hours).

Cheersss,
Armond

> Hi Guys,
> 
> I have different background threads in my application, one doing
> periodical
> database updates, another responsible for doing long searches and so.
> Obviously some are just reading from database while others are writing as
> well.
> 
> Once in a while I get "database is locked" exception. I need to know the
> safe way of reading/writing from/to database on different threads.
> 
> As well I've found "isDbLockedByCurrentThread()" and
> "isDbLockedByOtherThreads()" methods on SQLiteDatabase. Should I use them
> every time I want to access the database? What if the database is locked?
> Should I pause the current thread and retry a few milliseconds later?
> 
> Best Regards,
> Armond
> 
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331): Caused by:
> android.database.sqlite.SQLiteException: error code 5: database is locked
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> android.database.sqlite.SQLiteStatement.native_execute(Native Method)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> android.database.sqlite.SQLiteStatement.execute(SQLiteStatement.java:66)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1534)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> com.test.db.TestDao.update (TestDao.java:327)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> com.test.UpdateService.onStart(UpdateService.java:35)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     at
> android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2557)
> 
> 08-23 10:17:32.029 E/AndroidRuntime( 1331):     . 10 more
> 
> 
> 

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