h2 mv.db file is locked

[ZihengSun]

2024-09-07 22:07:25.602671-04:00 database: flush
org.h2.message.DbException: General error: "org.h2.mvstore.MVStoreException: The file is locked: /ho$
        at org.h2.message.DbException.get(DbException.java:212)
        at org.h2.message.DbException.convert(DbException.java:407)
        at org.h2.mvstore.db.Store.lambda$new$0(Store.java:122)
        at org.h2.mvstore.MVStore.handleException(MVStore.java:1546)
        at org.h2.mvstore.MVStore.panic(MVStore.java:371)
        at org.h2.mvstore.MVStore.<init>(MVStore.java:291)
        at org.h2.mvstore.MVStore$Builder.open(MVStore.java:2035)
        at org.h2.mvstore.db.Store.<init>(Store.java:133)
        at org.h2.engine.Database.<init>(Database.java:326)
        at org.h2.engine.Engine.openSession(Engine.java:92)
        at org.h2.engine.Engine.openSession(Engine.java:222)
        at org.h2.engine.Engine.createSession(Engine.java:201)
        at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:343)
        at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:125)
        at org.h2.util.JdbcUtils.getConnection(JdbcUtils.java:288)
        at org.h2.util.JdbcUtils.getConnection(JdbcUtils.java:270)
        at org.h2.tools.Shell.runTool(Shell.java:146)
        at org.h2.tools.Shell.main(Shell.java:80)
Caused by: org.h2.jdbc.JdbcSQLNonTransientException: General error: "org.h2.mvstore.MVStoreException$
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:566)
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:489)
        ... 18 more
Caused by: org.h2.mvstore.MVStoreException: The file is locked: /home/zsun/h2/gw.mv.db [2.2.224/7]
        at org.h2.mvstore.DataUtils.newMVStoreException(DataUtils.java:996)
        at org.h2.mvstore.SingleFileStore.lockFileChannel(SingleFileStore.java:143)
        at org.h2.mvstore.SingleFileStore.open(SingleFileStore.java:117)
        at org.h2.mvstore.SingleFileStore.open(SingleFileStore.java:81)
        at org.h2.mvstore.MVStore.<init>(MVStore.java:286)
        ... 12 more