John Embretsen wrote:
ludoW23 wrote:
Hi,

I'm studying Apache Derby and I'd like to lock a table during a select for
example. Is it possible?

Yes, there is a LOCK TABLE statement you can use. Take a look at the manual "Derby Developer's Guide", specifically this page:

http://db.apache.org/derby/docs/dev/ref/rrefsqlj40506.html


Hi -
I want to add something to what John states because it has tripped me up in the past. The documentation for LOCK TABLE states:
"  The table lock lasts until the end of the current transaction.  "

This means it is important to set AUTOCOMMIT OFF so the lock is not released when the LOCK TABLE statement completes.

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