"MySQL 自动终止其中一个事务并回滚" : 在日志里能看到 Deadlock found when trying to get lock;
怎么说呢,try restarting transaction.
User Pain Point:
"I can’t reproduce deadlock in dev but it happens in prod." → use `SHOW ENGINE INNODB STATUS` and log analysis.
4. 手动干预技巧
`SHOW PROCESSLIST`:定位阻塞进程。话说回来,
SELECT * FROM information_schema.PROCESSLIST WHERE COMMAND='Query' AND STATE='Waiting for table metadata lock';
If you identify a rogue process:
sql
KILL pid;不过,
You can also use `KILL QUERY pid` to stop only query part.
Use `SET innodb_lock_wait_timeout=10` temporarily to force quick rollback.
If locks are held by long‑running replication threads。consider pausing replication temporarily.
\t
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\t
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\t
\t
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But due to formatting errors from original snippet we will provide a clean version:
sql
KILL QUERY pid;-- kill just running query
KILL pid;按理说,-- kill both query and connection if needed
Caution:- Avoid killing critical system processes;always confirm process ID first.
e) 临时降低隔离级别
sql
SET SESSION transaction_isolation='READ COMMITTED';
"MySQL 自动终止其中一个事务并回滚" : 在日志里能看到 Deadlock found when trying to get lock;
怎么说呢,try restarting transaction.
User Pain Point:
"I can’t reproduce deadlock in dev but it happens in prod." → use `SHOW ENGINE INNODB STATUS` and log analysis.
4. 手动干预技巧
`SHOW PROCESSLIST`:定位阻塞进程。话说回来,
SELECT * FROM information_schema.PROCESSLIST WHERE COMMAND='Query' AND STATE='Waiting for table metadata lock';
If you identify a rogue process:
sql
KILL pid;不过,
You can also use `KILL QUERY pid` to stop only query part.
Use `SET innodb_lock_wait_timeout=10` temporarily to force quick rollback.
If locks are held by long‑running replication threads。consider pausing replication temporarily.
\t
\t
\t
\t
\t
\t
\t
\t
\t
\t
\t
\t
But due to formatting errors from original snippet we will provide a clean version:
sql
KILL QUERY pid;-- kill just running query
KILL pid;按理说,-- kill both query and connection if needed
Caution:- Avoid killing critical system processes;always confirm process ID first.
e) 临时降低隔离级别
sql
SET SESSION transaction_isolation='READ COMMITTED';