无法分配 CursorWindow

我正在操作SQLite3我的 Android 应用程序中的数据库。我刚刚从预填充的数据库中读取数据，该数据库有 20 万行和 14 列。条目是文字。所有列的数据类型都是文本。查询最多 11 个字母的单词（例如 ABANDONMENT）效果很好。但对于 12 个或更多（例如放弃），应用程序会崩溃。这是日志猫：

Could not allocate CursorWindow '//data//data//com.example.myapp//databases//database.sqlite' of size 2097152 due to error -12.
threadid=11: thread exiting with uncaught exception (group=0x40adf9f0)
FATAL EXCEPTION: Thread-2883
android.database.CursorWindowAllocationException: Cursor window allocation of 2048 kb failed. # Open Cursors=861 (# cursors opened by this proc=861)
at android.database.CursorWindow.<init>(CursorWindow.java:104)
at android.database.AbstractWindowedCursor.clearOrCreateWindow(AbstractWindowedCursor.java:198)
at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:162)
at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:156)
at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:161)
at android.database.AbstractCursor.moveToFirst(AbstractCursor.java:201)
at com.example.myapp.MainActivity.query(MainActivity.java:815)
at com.example.myapp.MainActivity$2.run(MainActivity.java:356)
at java.lang.Thread.run(Thread.java:856)

code:

query = "select * from words where col_1 = \"" + (myWord)+ "\";";
cursor = database.rawQuery(query, null);
if (cursor != null)                                          
    cursor.moveToFirst(); // line 815
if (!cursor.isAfterLast()) {
    do {
        for (i = 1; i < cursor.getColumnCount(); i++) {
            temp = cursor.getString(i);
            //other stuff
        }
    } while (cursor.moveToNext());
    cursor.close();
}

那么该错误意味着什么以及应用程序崩溃的原因是什么？

错误-12表示游标泄漏。

尝试关闭它：

try {....} finally {  cursor.close();}