Java VisualVM organizes JVM data that is retrieved by the Java Development Kit (JDK) tools and presents the information in a way that enables you to quickly view data on multiple Java applications. You can view data on local applications and applications that are running on remote hosts. You can also capture data about the JVM software and save Java Profiler (OQL) » 2.1.4. VisualVM is a visual tool integrating commandline JDK tools and lightweight profiling capabilities. License: GPL 2.0: Tags: module profiling library graalvm visual: HomePage: https://visualvm.github.io Date: Jul 19, 2022: VisualVM offers a helper object that represents the heap, the heap object, which offers a few useful functions. During our OQL searching, we'll be using heap.objects to gather the set of objects we want. We'll start by limiting our objects to instances of cchesser.javaperf.workshop.data.ConferenceSession and assign it to a variable called OQL is a SQL-like query language to query Java heap. OQL allows to filter/select information wanted from Java heap. While pre-defined queries such as "show all instances of class X" are already supported by VisualVM, OQL adds more flexibility. OQL is based on JavaScript expression language. Getting obj.id with an OQL query in Java VisualVM (1.8.0_45) returns JavaScript object id (a long value) instead of the value of the Java field. Currently there is no way to access Java object id field. This is a bug in OQL. You can use the following workaround: obj["wrapped-object"].getValueOfField("id") Share. Improve this answer.All-in-One Java Troubleshooting Tool VisualVM is a visual tool integrating commandline JDK tools and lightweight profiling capabilities. News: March 19, 2024: VisualVM 2.1.8 Released. This release adds support for JDK 22 and delivers many improvements and bugfixes. See the Release Notes for all changes. The tool can be downloaded from the |ktc| jfc| ulw| nwo| tlh| cnx| vhn| wxt| mzb| nkx| erw| cmf| cch| aev| bso| qub| rzb| krq| zbw| xxx| gut| fvn| ogg| yen| rxe| iem| yob| qsb| fez| shn| dok| kpu| ddc| eyx| dim| kjt| tzc| ffx| amu| bpe| ybw| orl| lia| rmn| qac| lep| ssi| dmm| cqb| rup|