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I have a script which is heavily doing select and insert nearly every seconds without fail and the total queries varies from a second to another. Below is the results of running the queries and finally is the error below Commands out of sync; you can't run this command now or sometimes it gives me connection lost.

Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.116','00:14:5E:95:B9:18','53',995,7)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.172','90:F6:52:20:15:E8','2049',5599,16)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.222','00:0C:29:EE:DE:BC','0',60,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.235','00:1E:90:3B:92:AA','17500',408,2)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.24','00:30:1E:F2:5F:B8','0',60,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.250','00:1E:68:5C:CF:93','32767',175,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.43','20:CF:30:5E:0B:41','137',359,3)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.52','00:1E:0B:85:B0:B1','22',10963,40)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.57','00:24:E8:79:BD:3B','5060',561,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.65','00:1A:64:21:D6:B4','0',60,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.160.9','00:09:0F:EF:DA:31','0',60,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.115','00:00:1C:DC:22:45','17500',408,2)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.137','D8:30:62:63:65:40','0',60,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.16','00:1E:90:3B:8F:6C','137',92,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.212','48:5D:60:00:DE:C0','137',359,3)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.233','00:25:64:CB:92:5C','17500',604,4)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.234','00:0C:29:34:8E:FF','137',92,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','10.207.161.3','00:D0:4C:D0:13:B8','32767',1524,19)

Time is 2012-07-16 23:51:46Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','169.254.122.188','00:19:21:3B:F4:17','32767',175,1)
Query 2 after executing INSERT INTO  export1 (iBTID ,timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES (NULL,'2012-07-16 23:51:45','203.91.121.76','00:60:E0:44:E4:B2','32767',1062,9)
Error in second query of insert Commands out of sync; you can't run this command now
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1 Answer 1

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If iBTID is an auto_increment column in the export1 table, you may want to change the INSERT INTO command to exclude that column as follows:

INSERT INTO export1 (timeStampID ,ipSource ,macSource,portSource,totalBits, packetCount) VALUES ('2012-07-16 23:51:45','10.207.160.116','00:14:5E:95:B9:18','53',995,7)

Every time you INSERT and hand mysqld a row where you set an auto_increment column to NULL, mysqld tries to reconcile the INSERT's Primary Key by finding the next auto_increment value and handling it internally. That's could be a little taxing on mysqld because handing a PRIMARY KEY (which is all defined as NOT NULL) a NULL value forces this reconciliation exercise. That is really unnatural in terms of ANSI SQL.

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  • ok will take your advice accordingly and perform the changes.
    – newbie14
    Commented Jul 17, 2012 at 1:29

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