How to escape a "!" present in connection string ?

[mreis1]

./soci_firebird_test "service=localhost:DB_ALIAS user=SYSDBA password=masterkey!2"
will output bash: !2: event not found because my password has a exclamation mark.

How is it suppose to escape it?
Tried wrapping the value in quotes but had no luck.
./soci_firebird_test "service=localhost:DB_ALIAS user=SYSDBA password=\"masterkey!2\""

Any suggestions?
Thank you

[zann1x]

! is part of bash's history expansion. Enclosing the whole connection string in single quotes instead of double quotes or turning off history expansion in your shell should fix the problem.

[vadz]

This is a shell question, not a SOCI question, but the answer is to use single quotes around the connection string.