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Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[ Variables | Buffer Pool | InnoDB Status ]
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2025-11-10 21:50:53 0x74 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 56 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 231450 srv_active, 0 srv_shutdown, 6408491 srv_idle
srv_master_thread log flush and writes: 6639941
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 10844430
OS WAIT ARRAY INFO: signal count 8935695
RW-shared spins 10921500, rounds 274648660, OS waits 7425222
RW-excl spins 5737137, rounds 9122450, OS waits 102404
RW-sx spins 22897, rounds 199888, OS waits 3613
Spin rounds per wait: 25.15 RW-shared, 1.59 RW-excl, 8.73 RW-sx
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LATEST FOREIGN KEY ERROR
------------------------
2025-09-23 04:44:42 0x3934 Transaction:
TRANSACTION 31617220, ACTIVE 0 sec inserting
mysql tables in use 1, locked 1
3 lock struct(s), heap size 1128, 1 row lock(s), undo log entries 1
MySQL thread id 397852, OS thread handle 14644, query id 12512247 CLOUD-PJCQRPUIU 45.58.43.18 freeluma Update
INSERT INTO ticket_messages
(ticket_id, direction, message_type, author_name, author_email, body_text, body_html, created_at)
VALUES
('8504', 'inbound', 'email', '', 'nanageorg@aol.com', 'Good morning.. \nOn August 26 Ireceived an incorrect order and was told a replacement would be sent. I have not received the replacement. Enclosed is another picture of the wrong item sent.\nThank you\nGeorgene Strop\nSent from my iPhone', '<html><head><meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\"></head><body dir=\"auto\"><div dir=\"ltr
Foreign key constraint fails for table `customersupport`.`ticket_messages`:
,
CONSTRAINT `ticket_messages_ibfk_1` FOREIGN KEY (`ticket_id`) REFERENCES `tickets` (`id`) ON DELETE CASCADE in parent table, in index idx_tm_ticket tuple:
DATA TUPLE: 3 fields;
0: len 8; hex 0000000000002138; asc !8;;
1: len 4; hex 68d2882a; asc h *;;
2: len 8; hex 0000000000009de9; asc ;;
But in parent table `customersupport`.`tickets`, in index PRIMARY,
the closest match we can find is record:
PHYSICAL RECORD: n_fields 23; compact format; info bits 0
0: len 8; hex 00000000000024ca; asc $ ;;
1: len 6; hex 000000000000; asc ;;
2: len 7; hex 80000000000000; asc ;;
3: len 8; hex 0000000000000002; asc ;;
4: len 30; hex 7777772e656c6567616e74657465726e6974792e636f6d2053454f205072; asc www.eleganteternity.com SEO Pr; (total 48 bytes);
5: len 0; hex ; asc ;;
6: len 17; hex 696e666f406f637461626c697a2e6e6574; asc info@octabliz.net;;
7: SQL NULL;
8: len 1; hex 03; asc ;;
9: len 1; hex 02; asc ;;
10: SQL NULL;
11: SQL NULL;
12: SQL NULL;
13: SQL NULL;
14: SQL NULL;
15: SQL NULL;
16: len 1; hex 01; asc ;;
17: SQL NULL;
18: len 4; hex 68ad8ccd; asc h ;;
19: len 4; hex 68ada017; asc h ;;
20: SQL NULL;
21: len 15; hex 47656e6572616c20496e7175697279; asc General Inquiry;;
22: len 30; hex 43555252454e54205449434b455420e280942041206d61726b6574696e67; asc CURRENT TICKET A marketing; (total 272 bytes);
------------
TRANSACTIONS
------------
Trx id counter 32027992
Purge done for trx's n:o < 32027992 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283676628517008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283676628521176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
847305516 OS file reads, 4981527 OS file writes, 2549560 OS fsyncs
11894.91 reads/s, 16384 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 390, seg size 392, 21085 merges
merged operations:
insert 59673, delete mark 457917, delete 14708
discarded operations:
insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.09 hash searches/s, 0.05 non-hash searches/s
---
LOG
---
Log sequence number 4657801254
Log flushed up to 4657801254
Pages flushed up to 4657801254
Last checkpoint at 4657801245
0 pending log flushes, 0 pending chkp writes
1550107 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 440704
Buffer pool size 1003
Free buffers 0
Database pages 995
Old database pages 386
Modified db pages 0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 189985273, not young 7082255456
0.00 youngs/s, 110530.20 non-youngs/s
Pages read 847305356, created 43236, written 3062495
11894.91 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 892 / 1000, young-making rate 0 / 1000 not 999 / 1000
Pages read ahead 11342.23/s, evicted without access 481.44/s, Random read ahead 0.00/s
LRU len: 995, unzip_LRU len: 0
I/O sum[46050]:cur[325], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=15956, Main thread ID=15356, state: sleeping
Number of rows inserted 273433, updated 262551, deleted 202038, read 106419767285
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 788305.83 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 509659
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
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