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I have several transactions that seem have stalled. Looking at the innodb status log, I found several messages similar to the following:

---TRANSACTION 69DBBB, ACTIVE 947 sec starting index read, thread declared inside InnoDB 373 mysql tables in use 4, locked 0 MySQL thread id 820, OS thread handle 0x7ef64c454700, query id 625198....

Trx read view will not see trx with id >= 69DBBC, sees < 6699C2

I need help understanding exactly what it means.

Thanks

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The output is truncated when there are many running transactions. The size depends on your version. See "Standard InnoDB Monitor output is limited..." for your version on https://dev.mysql.com/doc/refman/5.5/en/innodb-monitors.html

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