| Issue | Solution | |-------|----------| | jstack: command not found | JDK not installed or not in PATH | | Operation not permitted | Run with sudo or the same user as the Java process | | Unable to open socket file | Java process may be using a different JVM (e.g., IBM, GraalVM) | | PID not found | Process not running or you don't own it |
ls -la /usr/bin/jstack
# For JDK 11 sudo apt install openjdk-11-jdk
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| Issue | Solution | |-------|----------| | jstack: command not found | JDK not installed or not in PATH | | Operation not permitted | Run with sudo or the same user as the Java process | | Unable to open socket file | Java process may be using a different JVM (e.g., IBM, GraalVM) | | PID not found | Process not running or you don't own it |
ls -la /usr/bin/jstack
# For JDK 11 sudo apt install openjdk-11-jdk
