本文介绍了 Oracle 中 errorstack 的用途及其如何帮助诊断性能问题。errorstack 能捕获进程状态转储和上下文区域，有助于深入理解高 CPU 使用率等性能瓶颈的原因。
有关errorstack
Errorstack is an internal event and should only be set on the advice of Oracle Support.
oradebug dump errorstack 3
Dumps the process stack and process state for the current process.
Errorstack captures process state dumps and context areas (level 3)
Errorstack is an internal event and should only be set on the advice of Oracle Support.
oradebug dump errorstack 3
Dumps the process stack and process state for the current process.
Errorstack captures process state dumps and context areas (level 3)
参考自：
How to Collect Errorstacks for use in Diagnosing Performance Issues. (文档 ID 1364257.1)
How to Diagnose High CPU Usage Problems to the Module Level (文档 ID 352648.1)
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