OCILogon

function OCILogon(

  envhp: POCIEnv;

  errhp: POCIError;

  var svchp: POCISvcCtx;

  username: Poratext;

  uname_len: ub4;

  password: Poratext;

  passwd_len: ub4;

  dbname: Poratext;

  dbname_len: ub4

):sword;