The UserTransaction and TransactionManager interfaces look like, what's the difference?

two interfaces have similar interface methods,

   

Jun.30,2022

look at the comments

The UserTransaction interface defines the methods that allow an application to explicitly manage transaction boundaries.

The TransactionManager interface defines the methods that allow an application server to manage transaction boundaries.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1ea29a3-479c2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea29a3-479c2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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