在我的例子中，我也得到了这个错误。

我已经检查了其他进程，可能是锁定数据库的原因，如(SQLite管理器，连接到我的数据库的其他程序)。但是没有其他程序连接到它，它只是同一个应用程序中保持连接的另一个活动SQLConnection。

在建立新的SQLConnection和新命令之前，尝试检查您以前的活动SQLConnection，它可能仍然被连接(首先断开它)。

SQLite wiki DatabaseIsLocked页面提供了此错误消息的解释。在某种程度上，它指出争用的来源是内部的(对发出错误的进程而言)。本页没有解释的是SQLite如何决定进程中的某些东西持有锁，以及哪些条件会导致误报。

当您试图从同一个数据库连接同时对数据库执行两项不兼容的操作时，就会出现此错误代码。

在v3中引入的有关文件锁定的变化可能对未来的读者有用，可以在这里找到:SQLite版本3中的文件锁定和并发性

获得此异常的一个常见原因是，当您试图执行写操作时，仍然为读操作保留资源。例如，如果你从一个表中选择，然后尝试更新你所选择的东西，而不是先关闭你的ResultSet。

有些函数，比如INDEX'ing，可能会花费很长时间——而且在运行时它会锁定整个数据库。在这种情况下，它甚至可能不使用日志文件!

因此，最好/唯一的方法来检查您的数据库是否被锁定，因为一个进程正在积极地写入它(因此你应该让它独自呆着，直到它完成它的操作)是md5(或md5sum在某些系统)文件两次。 如果你得到一个不同的校验和，数据库正在被写入，你真的真的真的不想杀死这个进程，因为如果你这样做，你很容易得到一个损坏的表/数据库。

我要重申一下，因为这很重要——解决方案不是找到锁程序并杀死它——而是找出数据库是否有一个很好的写锁，然后从那里开始。有时候正确的解决方法就是喝杯咖啡休息一下。

The only way to create this locked-but-not-being-written-to situation is if your program runs BEGIN EXCLUSIVE, because it wanted to do some table alterations or something, then for whatever reason never sends an END afterwards, and the process never terminates. All three conditions being met is highly unlikely in any properly-written code, and as such 99 times out of 100 when someone wants to kill -9 their locking process, the locking process is actually locking your database for a good reason. Programmers don't typically add the BEGIN EXCLUSIVE condition unless they really need to, because it prevents concurrency and increases user complaints. SQLite itself only adds it when it really needs to (like when indexing).

Finally, the 'locked' status does not exist INSIDE the file as several answers have stated - it resides in the Operating System's kernel. The process which ran BEGIN EXCLUSIVE has requested from the OS a lock be placed on the file. Even if your exclusive process has crashed, your OS will be able to figure out if it should maintain the file lock or not!! It is not possible to end up with a database which is locked but no process is actively locking it!! When it comes to seeing which process is locking the file, it's typically better to use lsof rather than fuser (this is a good demonstration of why: https://unix.stackexchange.com/questions/94316/fuser-vs-lsof-to-check-files-in-use). Alternatively if you have DTrace (OSX) you can use iosnoop on the file.

我添加了“池=true”连接字符串，它工作。

我也有同样的问题。显然，回滚函数似乎用与db文件相同但没有最近更改的日志覆盖了db文件。我已经在下面的代码中实现了这一点，从那时起它一直工作得很好，而之前我的代码会因为数据库保持锁定而陷入循环。

希望这能有所帮助

我的python代码

##############
#### Defs ####
##############
def conn_exec( connection , cursor , cmd_str ):
    done        = False
    try_count   = 0.0
    while not done:
        try:
            cursor.execute( cmd_str )
            done = True
        except sqlite.IntegrityError:
            # Ignore this error because it means the item already exists in the database
            done = True
        except Exception, error:
            if try_count%60.0 == 0.0:       # print error every minute
                print "\t" , "Error executing command" , cmd_str
                print "Message:" , error

            if try_count%120.0 == 0.0:      # if waited for 2 miutes, roll back
                print "Forcing Unlock"
                connection.rollback()

            time.sleep(0.05)    
            try_count += 0.05


def conn_comit( connection ):
    done        = False
    try_count   = 0.0
    while not done:
        try:
            connection.commit()
            done = True
        except sqlite.IntegrityError:
            # Ignore this error because it means the item already exists in the database
            done = True
        except Exception, error:
            if try_count%60.0 == 0.0:       # print error every minute
                print "\t" , "Error executing command" , cmd_str
                print "Message:" , error

            if try_count%120.0 == 0.0:      # if waited for 2 miutes, roll back
                print "Forcing Unlock"
                connection.rollback()

            time.sleep(0.05)    
            try_count += 0.05       




##################
#### Run Code ####
##################
connection = sqlite.connect( db_path )
cursor = connection.cursor()
# Create tables if database does not exist
conn_exec( connection , cursor , '''CREATE TABLE IF NOT EXISTS fix (path TEXT PRIMARY KEY);''')
conn_exec( connection , cursor , '''CREATE TABLE IF NOT EXISTS tx (path TEXT PRIMARY KEY);''')
conn_exec( connection , cursor , '''CREATE TABLE IF NOT EXISTS completed (fix DATE, tx DATE);''')
conn_comit( connection )