I use
synchronized(ExampleDbAdapter.class){mDb.insert/update/delete/query...} in
ExampleDbAdapter to avoid this. Let me know if there's a better way.On Mon, Aug 24, 2009 at 10:58 AM, Armond Avanes <armond...@yahoo.com> wrote: > > So how can I create an in-memory database? I just took a quick look at the > API and couldn't find any. > > Cheersss, > Armond > > > develop...@googlegroups.com] On Behalf Of Andrei > > Sent: Monday, August 24, 2009 7:35 AM > > > > If your write time take long i would try this > > I would create another in memory database, attach it to yours. > > In memory database table would have same schema. > > You would write to in memory database and after done do insert into > > db1.table as select * from db2.table > > I did something similar but on desktop not phone and of course you > > need to wait for lock to clear > > > > On Aug 23, 2:31 am, "Armond Avanes" <armond...@yahoo.com> wrote: > > > 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 > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
