Android SQLITE Error code -24

I am having this error code, 24

I checked my code, I closed the cursor every time I use the cursor, I even close the database sometimes.

the error

could not allocate CursorWindow '/data/data/mydomain/databases/showUserDB.sqlite' of size 2097152 due to error -24.
android.database.CursorWindowAllocationException: Cursor window allocation of 2048 kb failed. # Open Cursors=13 (# cursors opened by this proc=13)

I also have the other error later on

   (14) cannot open file at line 30046 of [9491ba7d73]
   E/SQLiteLog﹕ (14) os_unix.c:30046:

I don't know what happen. The other reason maybe cause I don't have an ending detail page. It happen when I click the back button for so many time and try to get to main menu and then the apps crashed before going to main menu.