Author: Eloy Lafuente (stronk7)
MDL-51245 mssql: Diagnose missing READ_COMMITTED_SNAPSHOT mode
Without it, transactions are executed in standard READ_COMMITED
mode, without snapshoting/row versioning, leading to update conflicts
under high concurrency.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0e5bcf0a0b1118ab208f026eed7478e96ae65e6a
http://github.com/moodle/moodle/commit/0e5bcf0a0b1118ab208f026eed7478e96ae65e6a
+ 2.8 en [mssqlrcsmodemissing,core_error]