set ISC_USER=owner&set ISC_PASSWORD=Парол
echo show grant;|isql -q xnet://security.db|findstr OWNER
Database: xnet://security.db, User: OWNER
GRANT CREATE DATABASE TO USER OWNER

for %A in (f*f d*f) do @echo %~nxA:&findstr -v ^^# %A|findstr -v ^^$&echo.
firebird.conf:
  BugcheckAbort = 1
  DatabaseAccess        = None
  FileSystemCacheThreshold 201K    # pages
  DefaultDbCachePages   =    5K    # pages
  TempCacheLimit        =    640M  # bytes
  LockMemSize           =     12M  # bytes
  LockHashSlots         =  30011   # slots
  MaxUnflushedWriteTime = -1
  MaxUnflushedWrites    = -1
  IpcName               = FB304_0
  RemoteBindAddress     = 127.0.0.1
  RemoteServicePort     = 13040
  WireCompression       = true
  WireCrypt             = Enabled
  AuthServer            = Srp
  UserManager           = Srp
  ServerMode            = Super

databases.conf
employee = $(dir_sampleDb)/employee.fdb
security.db = $(dir_secDb)/security3.fdb
{
  RemoteAccess = false
  DefaultDbCachePages = 500
}
.fdb = e:/db/30/.fdb
test = d:/db/30/test.fdb

echo create database 'localhost/13040:test';show database;|isql -q -z
ISQL Version: WI-V3.0.4.33054 Firebird 3.0
SQL> Server version:
WI-V3.0.4.33054 Firebird 3.0
WI-V3.0.4.33054 Firebird 3.0/tcp (basid)/P15:CZ
WI-V3.0.4.33054 Firebird 3.0/tcp (basid)/P15:CZ
Database: localhost/13040:test
        Owner: OWNER
PAGE_SIZE 8192
Number of DB pages allocated = 180
Number of DB pages used = 176
Number of DB pages free = 4
Sweep interval = 20000
Forced Writes are ON
Transaction - oldest = 1
Transaction - oldest active = 2
Transaction - oldest snapshot = 2
Transaction - Next = 5
ODS = 12.0
Database not encrypted
Default Character set: NONE