blocks|key|716446|text|产生OutOfMemoryError:+PermGen+space的原因是它没有足够的permanent+generation+space+:)如果您使用的是Oracle+JVM，则需要在sbt脚本中添加-XX:MaxPermSize=256M+(或其他一些空间量)参数。对于其他JVM，请查看其文档。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|716447|entityMap|0|LINK|mutability|MUTABLE|url|http://mark.koli.ch/2009/01/understanding-javas-perm-gen-maxpermsize-heap-space-etc.html^0|2|V|2M|3|2U|K|17|Q|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

The cause for <code>OutOfMemoryError: PermGen space</code> is that it doesn't have enough <a href="http://mark.koli.ch/2009/01/understanding-javas-perm-gen-maxpermsize-heap-space-etc.html" rel="noreferrer">permanent generation space</a> :) If you are using Oracle JVM, you need to add the <code>-XX:MaxPermSize=256M</code> (or some other amount of space) argument to your <code>sbt</code> script. For other JVMs, look at their documentation.

blocks|key|500998|text|我使用HomeBrew在OS上安装sbt。它支持一个SBT_OPTS参数，这个参数可以用export+SBT_OPTS=-XX:MaxPermSize=256M放在~/.sbtconfig文件中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|500999|entityMap^0|Q|8|18|10|2A|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

I use HomeBrew to install sbt on OS X. It supports a <code>SBT_OPTS</code> argument which can be put in <code>~/.sbtconfig</code> file with <code>export SBT_OPTS=-XX:MaxPermSize=256M</code>.

blocks|key|716601|text|我遇到了这个问题，花了10分钟查看试图改变内存大小的站点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716602|结果我解决了这个问题，|716603|user-profile$+sbt|code-block|syntax|javascript|716604|然后,|716605|sbt-project-name+0.1>+clean|716606|这对我来说很清楚。|716607|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I had this issue, played around with it for 10 minutes looking at sites trying to change the memory size.

Turns out i resolved it by,

<pre><code>user-profile$ sbt
</code></pre>

Then,

<pre><code>sbt-project-name 0.1&gt; clean
</code></pre>

This cleared it up for me.

blocks|key|501068|text|对我来说，这看起来像是SBT中的内存泄漏，因为在我的例子中，程序在遇到异常之前成功编译和运行了大约3-5次，这是由SBT重新启动修复的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|501069|正如Alexey+Romanov建议的那样，最合适的解决方案似乎是SBT参数，或者如果有帮助，定期重新启动-XX:MaxPermSize=。|offset|length|style|CODE|501070|但还有另一种有趣的方法:尝试切换到Java+8。AFAIK它不再使用PermGen，并且可能对这种异常免疫。|501071|我仍然希望SBT的作者能在未来的版本中解决这个问题。|501072|entityMap|0|LINK|mutability|MUTABLE|url|http://jdk8.java.net/download.html^0|0|1H|G|0|H|6|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@$D|V|E|W|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

It looks like a memory leak in SBT for me as in my case the program compiles and runs successfully for about 3-5 times before hitting the exception which is fixed by SBT restart.

The most adequate solution indeed seems to be <code>-XX:MaxPermSize=</code> JVM parameter as Alexey Romanov suggests or to restart SBT periodically if it helps.

But there is another interesting way: try switching to <a href="http://jdk8.java.net/download.html" rel="noreferrer">Java 8</a>. AFAIK it doesn't use PermGen any more and is probably immune to this exception this way.

I still hope SBT authors will address this issue in future versions.

blocks|key|716674|text|我正在用Jenkins+sbt插件构建，也遇到了同样的问题。在将SBT_OPTS从sbt文件复制到Jenkins+job+config的JVM标志之后，这些问题就被解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716675|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I am building with the Jenkins sbt plugin and had the same problems. They were resolved after copying the SBT_OPTS from the sbt file to the Jenkins job config's JVM flags.

blocks|key|501244|text|您还可以在项目的根文件夹中添加.jvmopts文件，并在该文件中写入以下内容：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|501245|-Xms1g
-Xmx4g|code-block|syntax|javascript|501246|entityMap^0|F|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can also add a <code>.jvmopts</code> file in the root folder of your project, and write inside the file the following:
<pre><code>-Xms1g
-Xmx4g
</code></pre>

I have noticed a strange behavior of my scala compiler. It occasionally throws an OutOfMemoryError when compiling a class. Here's the error message:

<pre><code>[info] Compiling 1 Scala source to /Users/gruetter/Workspaces/scala/helloscala/target/scala-2.9.0/test-classes...
java.lang.OutOfMemoryError: PermGen space
Error during sbt execution: java.lang.OutOfMemoryError: PermGen space
</code></pre>

It only happens once in a while and the error is usually not thrown on the subsequent compile run. I use Scala 2.9.0 and compile via SBT.

Does anybody have a clue as to what might be the cause for this error? Thanks in advance for your insights.

How to prevent java.lang.OutOfMemoryError: PermGen space at Scala compilation?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我注意到我的scala编译器有一个奇怪的行为。它偶尔会在编译类时抛出OutOfMemoryError。以下是错误消息：[info] Compiling 1 Scala source to /Users/gruetter/Workspaces/scala/helloscala/target/scala-2.9.0/test-classes...java.lang.OutOfMemoryError: 

问如何在Scala编译时防止java.lang.OutOfMemoryError: PermGen空间？
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