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FOR UPDATE with IN clause causes LOCK WAIT TIMEOUT


FOR UPDATE with IN clause causes LOCK WAIT TIMEOUT

By : user2948787
Date : November 15 2020, 06:54 AM
With these it helps InnoDB row-level locks are index-locks in reality. A less documented feature* is: if the locking SELECT does not (or cannot) use a (user-defined) index, then only the default clustered index can be used, and the entire table becomes locked.
It is very likely that the optimizer decided that the index is not useful to check the "long" list of IN() parameters (probably because most of the table needs to be scanned). This whould lead to the unexpected side-effect you detected.
code :


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MySQL Error Code: 1205. Lock wait timeout during update with inner join

MySQL Error Code: 1205. Lock wait timeout during update with inner join


By : Kumar
Date : March 29 2020, 07:55 AM
will be helpful for those in need This error is entirely MySQL not doing as it should. The best solution is to get off of MySQL, but lacking that ability, this performance blog post has helped me get around this in the past.
MySQL has a lot of these little gotchas. It's like working in Access, half the time the program is going to do the wrong thing and not raise an error.
Cannot aquire lock exception: lock wait timeout exceeded spring sql

Cannot aquire lock exception: lock wait timeout exceeded spring sql


By : Davida Crozier
Date : March 29 2020, 07:55 AM
With these it helps It seems that I have either asked a obscure or difficult question or I have asked it in the wrong manner of place. At any rate after much hair pulling I found the answer to this question. My original code that actually attempts to CreateAMember here:
public void createAMember(int memberid, String name, String address1, String address2, String town, String contact_number, int bookallowance, double balance, boolean active) { String SQL = "insert into member (id,name,address1,address2,town,contact_number,book_allowance, balance, active) values (?,?,?,?,?,?,?, ?, ?)"; getJdbcTemplate().update(SQL, new Object[] { memberid,name,address1,address2,town,contact_number,bookallowance,balance,active}); System.out.println("Created Member Name = " + name + " memberid= " + memberid); //throw new libException();
ERROR 1205 (HY000): Lock wait timeout exceeded on update mysql

ERROR 1205 (HY000): Lock wait timeout exceeded on update mysql


By : wedok
Date : March 29 2020, 07:55 AM
may help you . I have solved the problem. I tried different values for innodb_lock_wait_timeout, also tried to change queries but got the same error. I did some research and asked my colleagues about hibernate.
They were doing numbers of transaction which include updating main table and committing in the end. So, I suggested them to use commit on each transaction. Finally I am not getting any lock wait time out errors.
Why am I getting a "Lock wait timeout exceeded" error while trying to update a MySQL entry?

Why am I getting a "Lock wait timeout exceeded" error while trying to update a MySQL entry?


By : thisdotjacob
Date : March 29 2020, 07:55 AM
around this issue I have a database that I am trying to update a row value in but I am getting a "lock wait timeout" error. This is what the table looks like: , First see the list of locked tables:
code :
show open tables where in_use>0;
show full processlist;
kill 141;
If a MySQL/InnoDB 'lock wait timeout' happens, is the lock given anyway when it's free?

If a MySQL/InnoDB 'lock wait timeout' happens, is the lock given anyway when it's free?


By : Silviu Chingaru
Date : March 29 2020, 07:55 AM
it should still fix some issue The lock requested by the statement that timed out will never be acquired:
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