java - 找不到 jmap 命令

Question

我试图在我的 CentOS 服务器上使用 jmap 命令，但它一直告诉我找不到该命令，即使我已经安装了 JDK。

这是命令 java -version 的输出:

java version "1.7.0_25"
OpenJDK Runtime Environment (rhel-2.3.10.4.el6_4-x86_64)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

我该如何解决这个问题？

Answer 1

您应该能够在 java-1.8.0-openjdk-devel-debug 或 java-1.7.0-openjdk- 中找到 jmap Redhat/Centos 上的 devel-debug 或 java-1.6.0-openjdk-devel-debug 包。要安装它，请以 root 身份运行以下命令:

yum install java-1.8.0-openjdk-devel-debug

为了完整起见，下面是检查哪些包包含 jmap 的命令:

yum whatprovides '*/jmap'

这是一个示例输出:

1:java-1.6.0-openjdk-devel-1.6.0.37-1.13.9.4.el7_1.x86_64 : OpenJDK Development Environment
Repo        : updates
Matched from:
Filename    : /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.37.x86_64/bin/jmap



1:java-1.7.0-openjdk-devel-1.7.0.91-2.6.2.3.el7.x86_64 : OpenJDK Development Environment
Repo        : base
Matched from:
Filename    : /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91-2.6.2.3.el7.x86_64/bin/jmap



1:java-1.8.0-openjdk-devel-1.8.0.65-3.b17.el7.x86_64 : OpenJDK Development Environment
Repo        : base
Matched from:
Filename    : /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64/bin/jmap



1:java-1.8.0-openjdk-devel-debug-1.8.0.65-3.b17.el7.x86_64 : OpenJDK Development Environment with full debug on
Repo        : base
Matched from:
Filename    : /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64-debug/bin/jmap



1:java-1.8.0-openjdk-devel-debug-1.8.0.65-3.b17.el7.x86_64 : OpenJDK Development Environment with full debug on
Repo        : @base
Matched from:
Filename    : /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64-debug/bin/jmap