Using OLED and TFT display on Arduino Mega

Other Hardware Displays
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Hey guys,
at this moment I try to use a 2.8 Tft Lcd display and also a OLED Display on just one Arduino Mega, but I've the problem, that the tft is working, but the oled just prints the adafruit logo and then turns black.

So thats the sourcecode I tried to use and I know it's simple yet.

#include <Adafruit_GFX.h>
#include <Adafruit_TFTLCD.h>
#include <TouchScreen.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 4 //I tried to set a higher pin as reset, but it didn't work
Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2


#define LOGO16_GLCD_HEIGHT 16 
#define LOGO16_GLCD_WIDTH  16 

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0

#define LCD_RESET A4

#define TS_MINX 121
#define TS_MINY 106
#define TS_MAXX 951
#define TS_MAXY 915

#define YP A2
#define XM A3
#define YM 8
#define XP 9

#define  BLACK   0x0000
#define BLUE    0x001F
#define RED     0xF800
#define GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF

Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);

int i = 1;

void setup() {
  Serial.begin(9600);
  Serial.println(F("TFT LCD test"));

#ifdef USE_ADAFRUIT_SHIELD_PINOUT
  Serial.println(F("Using Adafruit 2.4" TFT Arduino Shield Pinout"));
#else
  Serial.println(F("Using Adafruit 2.4" TFT Breakout Board Pinout"));
#endif

  Serial.print("TFT size is "); Serial.print(tft.width()); Serial.print("x"); Serial.println(tft.height());

  tft.reset();

  uint16_t identifier = tft.readID();
  if (identifier == 0x9325) {
    Serial.println(F("Found ILI9325 LCD driver"));
  } else if (identifier == 0x9328) {
    Serial.println(F("Found ILI9328 LCD driver"));
  } else if (identifier == 0x4535) {
    Serial.println(F("Found LGDP4535 LCD driver"));
  } else if (identifier == 0x7575) {
    Serial.println(F("Found HX8347G LCD driver"));
  } else if (identifier == 0x9341) {
    Serial.println(F("Found ILI9341 LCD driver"));
  } else if (identifier == 0x8357) {
    Serial.println(F("Found HX8357D LCD driver"));
  } else if (identifier == 0x0101)
  {
    identifier = 0x9341;
    Serial.println(F("Found 0x9341 LCD driver"));
  }
  else if (identifier == 0x1111)
  {
    identifier = 0x9328;
    Serial.println(F("Found 0x9328 LCD driver"));
  }
  else {
    Serial.print(F("Unknown LCD driver chip: "));
    Serial.println(identifier, HEX);
    Serial.println(F("If using the Adafruit 2.8" TFT Arduino shield, the line:"));
    Serial.println(F("  #define USE_ADAFRUIT_SHIELD_PINOUT"));
    Serial.println(F("should appear in the library header (Adafruit_TFT.h)."));
    Serial.println(F("If using the breakout board, it should NOT be #defined!"));
    Serial.println(F("Also if using the breakout, double-check that all wiring"));
    Serial.println(F("matches the tutorial."));
    identifier = 0x9328;
  }
  tft.begin(identifier);
  // put your setup code here, to run once:
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
}

void loop() {
  // put your main code here, to run repeatedly:
  tft.fillScreen(BLACK);
  tft.setCursor(1, 1);
  tft.setTextSize(1);
  tft.setTextColor(WHITE);
  tft.print(i);
  display.fillScreen(BLACK);
  display.setCursor(1, 1);
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.print(i);
  i++;
  delay(1000);
}

So here's my question: Is it possible to use both of them together or is it impossible and if it is possible, where my mistake.
Hope you can help me fast