java.lang.OutOfMemoryError: Java heap space in Forge 1.12.2

[iamdjgames]

Help me please!! When I try to start the forge (forge1.12.2-14.23.5.2775) it gives this error:

 

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 11/21/18 4:14 PM
Description: Initializing game

java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:3332)
    at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
    at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
    at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569)
    at java.lang.StringBuffer.append(StringBuffer.java:369)
    at java.io.BufferedReader.readLine(BufferedReader.java:370)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1294)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1248)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1229)
    at net.minecraft.client.settings.GameSettings.func_74300_a(GameSettings.java:737)
    at net.minecraft.client.settings.GameSettings.<init>(GameSettings.java:187)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:443)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
    at java.util.Arrays.copyOf(Arrays.java:3332)
    at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
    at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
    at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569)
    at java.lang.StringBuffer.append(StringBuffer.java:369)
    at java.io.BufferedReader.readLine(BufferedReader.java:370)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1294)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1248)
    at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1229)
    at net.minecraft.client.settings.GameSettings.func_74300_a(GameSettings.java:737)
    at net.minecraft.client.settings.GameSettings.<init>(GameSettings.java:187)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:443)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 7 (amd64) version 6.1
    Java Version: 1.8.0_25, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 294676520 bytes (281 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
    JVM Flags: 6 total; -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: 
    Loaded coremods (and transformers): 
    Launched Version: 1.12.2-forge1.12.2-14.23.5.2775
    LWJGL: 2.9.4
    OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    GL Caps: 
    Using VBOs: ~~ERROR~~ NullPointerException: null
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: ~~ERROR~~ NullPointerException: null
    Current Language: ~~ERROR~~ NullPointerException: null
    Profiler Position: N/A (disabled)
    CPU: <unknown>

[Frontear]

-Xmx512M

 

That right there is your issue. Here, you are only giving Java 512MB of RAM. At least 1GB is recommended.

[Cadiboo]

5 hours ago, Frontear said:

At least 1GB is recommended.

For vanilla. 2g+ is recommended for modded

[iamdjgames]

17 hours ago, diesieben07 said:

Your game ran out of memory because you only gave it 499MB. Give it more.

I do not understand these subjects very well, and I'm Brazilian. Can you help me with how to add more memory?

[iamdjgames]

16 hours ago, Frontear said:

-Xmx512M

 

That right there is your issue. Here, you are only giving Java 512MB of RAM. At least 1GB is recommended.

How I can give to Java more RAM?

[Cadiboo]

In your launcher under launch options. Google it to find instructions in Portuguese

[iamdjgames]

3 minutes ago, Cadiboo said:

In your launcher under launch options. Google it to find instructions in Portuguese

Thanks, man, I'll try.

[iamdjgames]

2 hours ago, Cadiboo said:

In your launcher under launch options. Google it to find instructions in Portuguese

Now I find another problem:

Error occurred during initialization of VM
Could not reserve enough space for object heap

[Frontear]

Define a -Xmx as well, which limits the heap size. I'd give it -Xmx2G which gives 2GB Ram

[iamdjgames]

16 minutes ago, Frontear said:

Define a -Xmx as well, which limits the heap size. I'd give it -Xmx2G which gives 2GB Ram

Thanks, I'll try

[iamdjgames]

48 minutes ago, Frontear said:

Define a -Xmx as well, which limits the heap size. I'd give it -Xmx2G which gives 2GB Ram

OMGGGGG, IT'S WORKING!