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Build: NetBeans IDE 8.1 (Build 201510222201) VM: Java HotSpot(TM) Client VM, 23.7-b01, Java(TM) SE Runtime Environment, 1.7.0_17-b02 OS: Windows XP User Comments: GUEST: after waking up from hybernation CPU jumped to 90% GUEST: runaway cpu after sleep mode GUEST: running some queries GUEST: Open a connection to one database in the Services tab, and then a connection to another database in an "Execute command ..." page. Often leads to out of heap space errors. GUEST: cpu jumps while in sleep mode? GUEST: prosess leaks memory when in hybernate or sleep mode, I come back and CPU is at 90% or more lanietoc: It presents when netbeans stats up. GUEST: Tried to quit Netbeans and it crashed. GUEST: idle GUEST: application locked up after sitting in idle for a limited amount of time GUEST: all 4 cpu maxed GUEST: idle GUEST: I were working with SQL from an AS400 Data Base Stacktrace: java.lang.OutOfMemoryError: Java heap space at org.openide.util.lookup.LookupListenerList.add(LookupListenerList.java:64) at org.openide.util.lookup.ProxyLookup$R.addLookupListener(ProxyLookup.java:488) at org.netbeans.modules.db.explorer.node.NodeRegistry.init(NodeRegistry.java:122) at org.netbeans.modules.db.explorer.node.NodeRegistry.create(NodeRegistry.java:102) at org.netbeans.api.db.explorer.node.BaseNode.<init>(BaseNode.java:173) at org.netbeans.api.db.explorer.node.BaseNode.<init>(BaseNode.java:147)
Created attachment 162589 [details] stacktrace
This can't be tracked down, as not enought information is present. If user asks DB server to supply a few thousand rows, it needs a very good JDBC driver and an even better GC to handle this.
That is very interesting. My NetBeans IDE does max out of CPU and sometimes memory at least once daily. My daily tasks include waking the machine from sleep in the morning. Though I typically reboot once every 2-3 days anyway. My PC is a Lenovo Thinkpad running the Windows 7 Pro operating system (Version 6.1 Build 7601 Service Pack 1). I connect to multiple IBM iSeries (a lightweight AS400) every day over various VPN connections. As far as I know, JDBC should scale to return thousands of records. I am using the IBM implementation: "IBM Data Server Driver for JDBC and SQLJ V3.61" db2jcc.jar Thanks for your assistance. What other information would be helpful?