To change the default object privilege setting property of a user, basically it will revoke a list of default object privileges from a list of users or roles. These object privileges will not be granted to the specified user or role on the new objects whenever the owner creates them.
parseRevokeDefObjPrivCommand = OMBREVOKE DEFAULT ( OBJ_PRIV |
OBJECT_PRIVILEGE ) "objPrivNameList" FROM ( USER "userOrRoleNameList"
| ROLE "userOrRoleNameList" ) [ FOR USER "QUOTED_STRING" ]
objPrivNameList = "UNQUOTED_STRING" { "," "UNQUOTED_STRING" }
userOrRoleNameList = "QUOTED_STRING" { "," "QUOTED_STRING" }