Ivan Přenosil wrote 21.11.2021 14:22:
or could it be changed to read-only in FB4?
It is meaningless. Read-write transaction has no differences from read-only until it perform an actual write.
And no, it cannot be "read-only read committed" for the consistency sake. -- WBR, SD. Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel