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=a9daab4927e197b9417ea35f7eb518adf4f5bd6d
http://github.com/moodle/moodle/commit/a9daab4927e197b9417ea35f7eb518adf4f5bd6d
+ 3.0 en [mssqlrcsmodemissing,core_error]