2 
 //Table Structure//

Create Table: CREATE TABLE `smsLog` (
`aUnique` varchar(30) NOT NULL,
`aMsgId` varchar(50) NOT NULL,
`uid` varchar(30) DEFAULT NULL,
`aClubUnique` varchar(30) DEFAULT NULL,
`aParsedMobile` varchar(30) DEFAULT NULL,
`aSmsAccount` varchar(30) DEFAULT NULL,
`aNetworkCode` varchar(30) DEFAULT NULL,
`sms` int(11) DEFAULT NULL,
`aTariffClass` int(11) DEFAULT NULL,
`aServiceDesc` int(11) DEFAULT NULL,
`aPushCount` int(11) DEFAULT NULL,
`aSmsResponse` varchar(255) DEFAULT NULL,
`aPushCode` varchar(20) DEFAULT NULL,
`billpush` datetime DEFAULT NULL,
  `aCreated` datetime DEFAULT NULL,
`aBillingType` varchar(10) NOT NULL,
`aCampaign` varchar(30) NOT NULL,
PRIMARY KEY (`aUnique`),
KEY `pushcode` (`aPushCode`),
KEY `uid` (`uid`),
KEY `parsedmobile` (`aParsedMobile`),
KEY `created` (`aCreated`),
KEY `smsaccount` (`aSmsAccount`),
KEY `pushcount` (`aPushCount`),
KEY `resp` (`aSmsResponse`),
KEY `campaign` (`aCampaign`),
KEY `sms` (`sms`),
KEY `billpush` (`billpush`),
KEY `club` (`aClubUnique`),
KEY `statCampaign` (`sms`,`aCampaign`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT

一组中的 1 行（0.00 秒）

 ==============================================



  String rowLockQuery="SELECT 1 FROM smsLog WHERE uid=? AND sms='2' 
  GROUP BY 1 FOR UPDATE";
   String updatequery = "UPDATE smsLog SET abillpush=? WHERE uid=? AND sms='2'"; 

     PreparedStatement preStatement=null;
     PreparedStatement preLockStatement=null;
       try{
         con.setAutoCommit(false);
         preLockStatement=con.prepareStatement(rowLockQuery);
         preLockStatement.setString(1, uid);
         rs=preLockStatement.executeQuery();

         if(rs.next() && rs.getInt(1)>0)
         {
        preStatement=con.prepareStatement(updatequery);
        preStatement.setString(1,newbillpush);
        preStatement.setString(2,uid);
        preStatement.executeUpdate();
         }
        con.commit();
         }

       //catch... finally code...

我得到以下更新查询异常。我找不到原因。

SQLException occurred com.mysql.jdbc.exceptions.jdbc4.
MySQLTransactionRollbackException: 
Deadlock found when trying to get lock; try restarting transaction

在执行时

   show engine innodb status\g

我得到了以下..我看不出为什么更新查询有问题，如何解决？DB 是 MySQL InnoDB。

          Type: InnoDB
          Name: 
        Status: 
        =====================================
        130515 18:45:04 INNODB MONITOR OUTPUT
        =====================================
        Per second averages calculated from the last 55 seconds
        -----------------
        BACKGROUND THREAD
        -----------------
        srv_master_thread loops: 295368 1_second, 44484 sleeps, 29526 10_second, 178 background, 174 flush
        srv_master_thread log flush and writes: 50910
        ----------
        SEMAPHORES
        ----------
        OS WAIT ARRAY INFO: reservation count 3105429, signal count 96714621
        Mutex spin waits 432817470, rounds 438340125, OS waits 702536
        RW-shared spins 16170554, OS waits 1668078; RW-excl spins 2935530, OS waits 553845
        Spin rounds per wait: 1.01 mutex, 5.54 RW-shared, 54.13 RW-excl
        ------------------------
        LATEST DETECTED DEADLOCK
        ------------------------
        130515 18:43:07
        *** (1) TRANSACTION:
        TRANSACTION CA072A19, ACTIVE 2 sec, process no 24674, OS thread id 1298565440 fetching rows
        mysql tables in use 1, locked 1
        LOCK WAIT 11 lock struct(s), heap size 3112, 15 row lock(s), undo log entries 8
        MySQL thread id 61290, query id 38534459  Updating
        UPDATE smsLog SET abillpush='2013-05-15 16:15:42' WHERE uid='ran123321' AND sms='2'
        *** (1) WAITING FOR THIS LOCK TO BE GRANTED:
        RECORD LOCKS space id 260 page no 1165542 n bits 168 index `PRIMARY` of table `anyxume`.`mobileClubBillingLog` trx id CA072A19 lock_mode X locks rec but not gap waiting
        Record lock, heap no 100 PHYSICAL RECORD: n_fields 19; compact format; info bits 0
         0: len 16; hex 313937363139373735383633314b4453; asc 1976197758631KDS;;
         1: len 6; hex 0000ca0729fe; asc     ) ;;
         2: len 7; hex 000007a7a10cb6; asc        ;;
         3: len 0; hex ; asc ;;
         4: len 16; hex 34323231373237303335363331434453; asc 4221727035631CDS;;
         5: len 16; hex 393938353737333930383233314b4453; asc 9985773908231KDS;;
         6: len 11; hex 3237373434383432393439; asc 27744842949;;
         7: len 0; hex ; asc ;;
         8: len 5; hex 63656c6c63; asc cellc;;
         9: len 4; hex 80000001; asc     ;;
         10: len 4; hex 80000005; asc     ;;
         11: len 4; hex 80000001; asc     ;;
         12: len 4; hex 80000000; asc     ;;
         13: len 0; hex ; asc ;;
         14: len 0; hex ; asc ;;
         15: len 8; hex 8000124f003511bf; asc    O 5  ;;
         16: len 8; hex 8000124f0032c6c6; asc    O 2  ;;
         17: len 4; hex 636c7562; asc club;;
         18: len 16; hex 373139363836313836343533314b4453; asc 7196861864531KDS;;

        *** (2) TRANSACTION:
        TRANSACTION CA0729FE, ACTIVE 4 sec, process no 24674, OS thread id 1310812480 starting index read
        mysql tables in use 1, locked 1
        14 lock struct(s), heap size 3112, 368 row lock(s), undo log entries 6
        MySQL thread id 61496, query id 38535072  Updating
        UPDATE smsLog SET abillpush='2013-05-15 16:15:42' WHERE uid='ran212345' AND sms='2'
        *** (2) HOLDS THE LOCK(S):
        RECORD LOCKS space id 260 page no 1165542 n bits 168 index `PRIMARY` of table `anyxume`.`mobileClubBillingLog` trx id CA0729FE lock_mode X locks rec but not gap
        Record lock, heap no 100 PHYSICAL RECORD: n_fields 19; compact format; info bits 0
         0: len 16; hex 313937363139373735383633314b4453; asc 1976197758631KDS;;
         1: len 6; hex 0000ca0729fe; asc     ) ;;
         2: len 7; hex 000007a7a10cb6; asc        ;;
         3: len 0; hex ; asc ;;
         4: len 16; hex 34323231373237303335363331434453; asc 4221727035631CDS;;
         5: len 16; hex 393938353737333930383233314b4453; asc 9985773908231KDS;;
         6: len 11; hex 3237373434383432393439; asc 27744842949;;
         7: len 0; hex ; asc ;;
         8: len 5; hex 63656c6c63; asc cellc;;
         9: len 4; hex 80000001; asc     ;;
         10: len 4; hex 80000005; asc     ;;
         11: len 4; hex 80000001; asc     ;;
         12: len 4; hex 80000000; asc     ;;
         13: len 0; hex ; asc ;;
         14: len 0; hex ; asc ;;
         15: len 8; hex 8000124f003511bf; asc    O 5  ;;
         16: len 8; hex 8000124f0032c6c6; asc    O 2  ;;
         17: len 4; hex 636c7562; asc club;;
         18: len 16; hex 373139363836313836343533314b4453; asc 7196861864531KDS;;

        *** (2) WAITING FOR THIS LOCK TO BE GRANTED:
        RECORD LOCKS space id 260 page no 1369260 n bits 400 index `userunique` of table `anyxume`.`mobileClubBillingLog` trx id CA0729FE lock_mode X waiting
        Record lock, heap no 240 PHYSICAL RECORD: n_fields 2; compact format; info bits 0
         0: len 16; hex 34323231373237303335363331434453; asc 4221727035631CDS;;
         1: len 16; hex 303134393736353137353633314b4453; asc 0149765175631KDS;;

        *** WE ROLL BACK TRANSACTION (1)
        ------------
        TRANSACTIONS
        ------------
        Trx id counter CA073739
        Purge done for trx's n:o < CA072B60 undo n:o < 0
        History list length 597
        LIST OF TRANSACTIONS FOR EACH SESSION:
        ---TRANSACTION CA07371A, not started, process no 24674, OS thread id 1311078720
        MySQL thread id 61961, query id 38718252 
        ---TRANSACTION CA0735E2, not started, process no 24674, OS thread id 1292974400
        MySQL thread id 61960, query id 38701114 
        ---TRANSACTION CA073610, not started, process no 24674, OS thread id 1317202240
        MySQL thread id 61959, query id 38703312 
        ---TRANSACTION CA0736F7, not started, process no 24674, OS thread id 1261025600
        MySQL thread id 61958, query id 38715121 
        ---TRANSACTION CA073594, not started, process no 24674, OS thread id 1285519680
        MySQL thread id 61957, query id 38697158 
        ---TRANSACTION CA073545, not started, process no 24674, OS thread id 1318267200
        MySQL thread id 61956, query id 38692493 
        ---TRANSACTION CA07353B, not started, process no 24674, OS thread id 1316936000
        MySQL thread id 61955, query id 38692221 
        ---TRANSACTION CA073684, not started, process no 24674, OS thread id 1258363200
        ---TRANSACTION CA072B5D, ACTIVE 112 sec, process no 24674, OS thread id 1284454720 updating or deleting
        mysql tables in use 1, locked 1
        266 lock struct(s), heap size 31160, 526 row lock(s), undo log entries 261
        MySQL thread id 52162, query id 38546447  Updating
        UPDATE smsLog SET abillpush='2013-05-15 16:15:42' WHERE uid='ran5543212' AND sms='2'
        Trx read view will not see trx with id >= CA072B5E, sees < CA0729B6
        --------
        FILE I/O
        --------
        I/O thread 0 state: waiting for i/o request (insert buffer thread)
        I/O thread 1 state: waiting for i/o request (log thread)
        I/O thread 2 state: waiting for i/o request (read thread)
        I/O thread 3 state: waiting for i/o request (read thread)
        I/O thread 4 state: waiting for i/o request (read thread)
        I/O thread 5 state: waiting for i/o request (read thread)
        I/O thread 6 state: doing file i/o (write thread) ev set
        I/O thread 7 state: waiting for i/o request (write thread)
        I/O thread 8 state: doing file i/o (write thread) ev set
        I/O thread 9 state: waiting for i/o request (write thread)
        Pending normal aio reads: 0, aio writes: 22,
         ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
        Pending flushes (fsync) log: 0; buffer pool: 0
        3599293 OS file reads, 25445832 OS file writes, 1963825 OS fsyncs
        0 pending preads, 2 pending pwrites
        4.27 reads/s, 26632 avg bytes/read, 242.83 writes/s, 12.55 fsyncs/s
        -------------------------------------
        INSERT BUFFER AND ADAPTIVE HASH INDEX
        -------------------------------------
        Ibuf: size 1944, free list len 52611, seg size 54556,
        1832720 inserts, 1510416 merged recs, 644369 merges
        Hash table size 108635393, node heap has 166234 buffer(s)
        566434.48 hash searches/s, 14182.00 non-hash searches/s
        ---
        LOG
        ---
        Log sequence number 3905250202816
        Log flushed up to   3905249778085
        Last checkpoint at  3905052469518
        0 pending log writes, 0 pending chkp writes
        4306448 log i/o's done, 17.45 log i/o's/second
        ----------------------
        BUFFER POOL AND MEMORY
        ----------------------
        Total memory allocated 56125915136; in additional pool allocated 0
        Dictionary memory allocated 1810268
        Buffer pool size   3350400
        Free buffers       3578
        Database pages     3180587
        Old database pages 1174063
        Modified db pages  232551
        Pending reads 0
        Pending writes: LRU 0, flush list 23, single page 0
        Pages made young 1393521, not young 0
        9.15 youngs/s, 0.00 non-youngs/s
        Pages read 3882679, created 79303, written 43799864
        6.95 reads/s, 0.15 creates/s, 517.30 writes/s
        Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
        Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
        LRU len: 3180587, unzip_LRU len: 0
        I/O sum[26224]:cur[128], unzip sum[0]:cur[0]
        --------------
        ROW OPERATIONS
        --------------
        0 queries inside InnoDB, 0 queries in queue
        10 read views open inside InnoDB
        Main thread process no. 24674, id 1218373952, state: sleeping
        Number of rows inserted 1153277, updated 68599757, deleted 1, read 58688766311
        5.69 inserts/s, 576.39 updates/s, 0.00 deletes/s, 692223.92 reads/s
        ----------------------------
        END OF INNODB MONITOR OUTPUT
        ============================
4

2 回答 2

2

你有

UPDATE smsLog 
SET abillpush='2013-05-15 16:15:42' 
WHERE uid='ran123321' AND sms='2';

如果这影响多于一行，则 mysql 可能使用表锁定进行更新。在这种情况下，您可以尝试首先选择要更新的行：

SELECT aUnique 
FROM smsLog 
WHERE uid='ran123321' AND sms='2' 
ORDER BY aUnique;

然后取有序的结果集并按此顺序更新

UPDATE smsLog 
  SET abillpush='2013-05-15 16:15:42' 
WHERE aUnique IN (the list);

当然，您可以将后者组合成一个语句。

UPDATE smsLog 
  SET abillpush='2013-05-15 16:15:42' 
WHERE aUnique IN (
   SELECT aUnique 
   FROM smsLog 
   WHERE uid='ran123321' AND sms='2' ORDER BY aUnique);

以您的代码示例为例，您将获得：

String updatequery = "UPDATE smsLog "+ 
      "SET abillpush=? "+
      "WHERE aUnique IN ("+
      "SELECT aUnique " +
      "FROM smsLog " +
      "WHERE uid=? AND sms=? ORDER BY aUnique)";

这只是一个想法，未经测试。尽管如此，它应该可以工作。

于 2013-05-15T16:38:26.143 回答
1

如果没有看到所有正在运行的查询，很难确切地知道发生了什么，但从错误中我可以看到您的查询首先获得了一个写锁，然后它需要一个也需要间隙锁定的写锁。我自己也遇到过这个问题，但从来没有得到一个很好的答案，为什么要按此顺序进行锁定，但这似乎与不使用整个主键的更新有关。

FOR UPDATE但是，通常可以在使用语句更新之前获得此锁。在你的情况下，它会是

SELECT 1 FROM smsLog WHERE uid='ran212345' AND sms='2' FOR UPDATE

试一试，希望最好的:)

于 2013-05-15T20:31:58.777 回答