Joboss throws OutOfmemory Error
sir / madam,
I am using jdom parser for parsing my XML file .I can get correct results when the xml files are small.But when my xml file grows to larger in size it shows ' java.lang.OutOfMemoryError' .How can I solve this problem.If U have some sample code with no such error will be very helpfull for me.
My XML file contains 3laks lines
[email protected]
JINOY.P.L
You could try and increase the heap size of the VM running the code in question using the following java command line option, -Xmx
See the J2SE docs for more details.
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/java.html#options
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OutOfMemory error while executing sql query
Hello!
My program gets multiple datas from database in every ten minutes, and stores them in memory for hundreds of users, requesting datas via web-interface simoultaneously.
I dont have access to change database structures, write stored procedures, etc, just read from db.
There is a table in database with lot of million rows, and sometimes when I try to execute a SELECT on this table it takes minutes to get back the result.
To avoid waiting for database server for a long time, I set querytimeout to 30 seconds.
If the server throws back the execution with Query Timed out Exception, I want to 'forget' this data, and 0 value is acceptable because of fast run is more important. So I put the boolean broken variable to check if there is any problem with db server.
The size of the used memory is about 150Mb if things going well, but I set the max heap to 512 MB, just in case anything happens.
I'm logging all threads stacktrace, and free/used/allocated memory size in every 5 seconds.(threadwatching.log) 2.appendix
Sometimes, not in every case (I dont know what is this depends on), when I get the next phase of refreshing cached datas (you can see it below), the process reaches the fiorst checkpoint (signed in code below), starts to execute the sql query, and never reaches the second checkpoint , but used memory growing 50-60 Mb-os in every 5 seconds, as I can see in threadwatching.log until it reaches the max memory and throws OutOfMemory error: java heap space.
I'm using DbConnectionBroker for connection pooling, SQLCommandBean for handling Statements, PreparedStatements, etc, and jTDS jdbc connector.
SQLCommandBean closes statements, resultsets, so these objects doesnt stays open.
I cant figured out what causes the memory leak, if someone have an idea, please help me.
1. Part of the cached data refreshing (DataFactory.createPCVPPMforSiemens()):
PCVElement element = new PCVElement(m, ProcessControlView.PPM);
String s = DateTime.getDate(interval.getStartDate());
boolean broken=false;
int value = 0;
for (int j = 0; j < 48; j++) {
try {
if (!broken) {
d1 = DateTime.getDate(new Date(start + ((j + 1) * 600000)));
sqlBean = new SQLCommandBean();
conn = broker.getConnection();
sqlBean.setConnection(conn);
sqlBean.setQueryTimeOut(30);
System.out.println(DateTime.getDate(new Date())+" "+m.getName()+" "+j);// first checkpoint
value = SiemensWorks.getPCVPPM(sqlBean, statId, s, d1);
System.out.println(DateTime.getDate(new Date())+" "+m.getName()+" "+j);// second checkpoint
} else value=0;
} catch (Exception ex) {
System.out.println("ERROR: DataFactory.createPCVPPMforSiemens 1 :" + ex.getMessage());
ex.printStackTrace();
value = 0;
broken=true;
} finally {
try {
broker.freeConnection(conn);
} catch (Exception ex) {}
element.getAvgValues()[j] = value;
}2. SiemensWorks.getPCVPPM()
public static int getPCVPPM(SQLCommandBean sqlBean,int statID,String start,String end)
throws SQLException, UnsupportedTypeException, NoSuchColumnException {
sqlBean.setSqlValue(SiemensSQL.PCV_PPM);
Vector values=new Vector();
values.add(new StringValue(statID+""));
values.add(new StringValue(start));
values.add(new StringValue(end));
sqlBean.setValues(values);
Vector rows=sqlBean.executeQuery();
if (rows==null || rows.size()==0) return 0;
Row row=(Row)rows.firstElement();
try {
float ret=Float.parseFloat(row.getString(1));
if (ret<=0) ret=0;
return Math.round(ret);
} catch (Exception ex) {
return 0;
}3. Part of Threadwatching.log
2006-10-13 16:46:56 Name: SMT Refreshing Threads
2006-10-13 16:46:56 Thread count: 4
2006-10-13 16:46:56 Active count: 4
2006-10-13 16:46:56 Active group count: 0
2006-10-13 16:46:56 Daemon: false
2006-10-13 16:46:56 Priority: 5
2006-10-13 16:46:57 Free memory: 192,228,944 bytes
2006-10-13 16:46:57 Max memory: 332,988,416 bytes
2006-10-13 16:46:57 Memory in use: 140,759,472 bytes
2006-10-13 16:46:57 ---------------------------------
2006-10-13 16:46:57 0. Name: CachedLayerTimer
2006-10-13 16:46:57 0. Id: 19
2006-10-13 16:46:57 0. Priority: 5
2006-10-13 16:46:57 0. Parent: SMT Refreshing Threads
2006-10-13 16:46:57 0. State: RUNNABLE
2006-10-13 16:46:57 0. Alive: true
2006-10-13 16:46:57 java.io.FileOutputStream.close0(Native Method)
2006-10-13 16:46:57 java.io.FileOutputStream.close(Unknown Source)
2006-10-13 16:46:57 sun.nio.cs.StreamEncoder$CharsetSE.implClose(Unknown Source)
2006-10-13 16:46:57 sun.nio.cs.StreamEncoder.close(Unknown Source)
2006-10-13 16:46:57 java.io.OutputStreamWriter.close(Unknown Source)
2006-10-13 16:46:57 xcompany.smtmonitor.chart.ChartCreator.createChart(ChartCreator.java:663)
2006-10-13 16:46:57 xcompany.smtmonitor.chart.ChartCreator.create(ChartCreator.java:441)
2006-10-13 16:46:57 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:463)
2006-10-13 16:46:57 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:46:57 java.util.TimerThread.run(Unknown Source)
Software runs well until I get the DataFactory.createPCVPPMforSiemens function in my code ->
2006-10-13 16:47:01 Name: SMT Refreshing Threads
2006-10-13 16:47:01 Thread count: 4
2006-10-13 16:47:01 Active count: 4
2006-10-13 16:47:01 Active group count: 0
2006-10-13 16:47:01 Daemon: false
2006-10-13 16:47:01 Priority: 5
2006-10-13 16:47:02 Free memory: 189,253,304 bytes
2006-10-13 16:47:02 Max memory: 332,988,416 bytes
2006-10-13 16:47:02 Memory in use: 143,735,112 bytes
2006-10-13 16:47:02 ---------------------------------
2006-10-13 16:47:02 0. Name: CachedLayerTimer
2006-10-13 16:47:02 0. Id: 19
2006-10-13 16:47:02 0. Priority: 5
2006-10-13 16:47:02 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:02 0. State: RUNNABLE
2006-10-13 16:47:02 0. Alive: true
2006-10-13 16:47:02 java.util.LinkedList$ListItr.previous(Unknown Source)
2006-10-13 16:47:02 net.sourceforge.jtds.util.TimerThread.setTimer(TimerThread.java:174)
2006-10-13 16:47:02 net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3734)
2006-10-13 16:47:02 net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:997)
2006-10-13 16:47:02 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:320)
2006-10-13 16:47:02 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:667)
2006-10-13 16:47:02 xcompany.database.sql.SQLCommandBean.executeQuery(SQLCommandBean.java:91)
2006-10-13 16:47:02 xcompany.smtmonitor.data.SiemensWorks.getPCVPPM(SiemensWorks.java:409)
2006-10-13 16:47:02 xcompany.smtmonitor.data.DataFactory.createPCVPPMforSiemens(DataFactory.java:6103)
2006-10-13 16:47:02 xcompany.smtmonitor.data.DataFactory.refreshProcessControlView(DataFactory.java:5791)
2006-10-13 16:47:02 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:514)
2006-10-13 16:47:02 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:02 java.util.TimerThread.run(Unknown Source)
2006-10-13 16:47:06 Name: SMT Refreshing Threads
2006-10-13 16:47:06 Thread count: 4
2006-10-13 16:47:06 Active count: 4
2006-10-13 16:47:06 Active group count: 0
2006-10-13 16:47:06 Daemon: false
2006-10-13 16:47:06 Priority: 5
2006-10-13 16:47:08 Free memory: 127,428,192 bytes
2006-10-13 16:47:08 Max memory: 332,988,416 bytes
2006-10-13 16:47:08 Memory in use: 205,560,224 bytes
2006-10-13 16:47:08 ---------------------------------
2006-10-13 16:47:08 0. Name: CachedLayerTimer
2006-10-13 16:47:08 0. Id: 19
2006-10-13 16:47:08 0. Priority: 5
2006-10-13 16:47:08 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:08 0. State: RUNNABLE
2006-10-13 16:47:08 0. Alive: true
2006-10-13 16:47:08 java.util.LinkedList$ListItr.previous(Unknown Source)
2006-10-13 16:47:08 net.sourceforge.jtds.util.TimerThread.setTimer(TimerThread.java:174)
2006-10-13 16:47:08 net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3734)
2006-10-13 16:47:08 net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:997)
2006-10-13 16:47:08 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:320)
2006-10-13 16:47:08 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:667)
2006-10-13 16:47:08 xcompany.database.sql.SQLCommandBean.executeQuery(SQLCommandBean.java:91)
2006-10-13 16:47:08 xcompany.smtmonitor.data.SiemensWorks.getPCVPPM(SiemensWorks.java:409)
2006-10-13 16:47:08 xcompany.smtmonitor.data.DataFactory.createPCVPPMforSiemens(DataFactory.java:6103)
2006-10-13 16:47:08 xcompany.smtmonitor.data.DataFactory.refreshProcessControlView(DataFactory.java:5791)
2006-10-13 16:47:08 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:514)
2006-10-13 16:47:08 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:08 java.util.TimerThread.run(Unknown Source)
2006-10-13 16:47:12 Name: SMT Refreshing Threads
2006-10-13 16:47:12 Thread count: 4
2006-10-13 16:47:12 Active count: 4
2006-10-13 16:47:12 Active group count: 0
2006-10-13 16:47:12 Daemon: false
2006-10-13 16:47:12 Priority: 5
2006-10-13 16:47:15 Free memory: 66,760,208 bytes
2006-10-13 16:47:15 Max memory: 332,988,416 bytes
2006-10-13 16:47:15 Memory in use: 266,228,208 bytes
2006-10-13 16:47:15 ---------------------------------
2006-10-13 16:47:15 0. Name: CachedLayerTimer
2006-10-13 16:47:15 0. Id: 19
2006-10-13 16:47:15 0. Priority: 5
2006-10-13 16:47:15 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:15 0. State: RUNNABLE
2006-10-13 16:47:15 0. Alive: true
2006-10-13 16:47:15 java.util.LinkedList.addBefore(Unknown Source)
2006-10-13 16:47:15 java.util.LinkedList.access$300(Unknown Source)
2006-10-13 16:47:15 java.util.LinkedList$ListItr.add(Unknown Source)
2006-10-13 16:47:15 net.sourceforge.jtds.util.TimerThread.setTimer(TimerThread.java:175)
2006-10-13 16:47:15 net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3734)
2006-10-13 16:47:15 net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:997)
2006-10-13 16:47:15 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:320)
2006-10-13 16:47:15 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:667)
2006-10-13 16:47:15 xcompany.database.sql.SQLCommandBean.executeQuery(SQLCommandBean.java:91)
2006-10-13 16:47:15 xcompany.smtmonitor.data.SiemensWorks.getPCVPPM(SiemensWorks.java:409)
2006-10-13 16:47:15 xcompany.smtmonitor.data.DataFactory.createPCVPPMforSiemens(DataFactory.java:6103)
2006-10-13 16:47:15 xcompany.smtmonitor.data.DataFactory.refreshProcessControlView(DataFactory.java:5791)
2006-10-13 16:47:15 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:514)
2006-10-13 16:47:15 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:15 java.util.TimerThread.run(Unknown Source)
2006-10-13 16:47:17 Name: SMT Refreshing Threads
2006-10-13 16:47:17 Thread count: 4
2006-10-13 16:47:17 Active count: 4
2006-10-13 16:47:17 Active group count: 0
2006-10-13 16:47:17 Daemon: false
2006-10-13 16:47:17 Priority: 5
2006-10-13 16:47:20 Free memory: 23,232,496 bytes
2006-10-13 16:47:20 Max memory: 332,988,416 bytes
2006-10-13 16:47:20 Memory in use: 309,755,920 bytes
2006-10-13 16:47:20 ---------------------------------
2006-10-13 16:47:20 0. Name: CachedLayerTimer
2006-10-13 16:47:20 0. Id: 19
2006-10-13 16:47:20 0. Priority: 5
2006-10-13 16:47:20 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:20 0. State: RUNNABLE
2006-10-13 16:47:20 0. Alive: true
2006-10-13 16:47:20 net.sourceforge.jtds.util.TimerThread.setTimer(TimerThread.java:171)
2006-10-13 16:47:20 net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3734)
2006-10-13 16:47:20 net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:997)
2006-10-13 16:47:20 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:320)
2006-10-13 16:47:20 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:667)
2006-10-13 16:47:20 xcompany.database.sql.SQLCommandBean.executeQuery(SQLCommandBean.java:91)
2006-10-13 16:47:20 xcompany.smtmonitor.data.SiemensWorks.getPCVPPM(SiemensWorks.java:409)
2006-10-13 16:47:20 xcompany.smtmonitor.data.DataFactory.createPCVPPMforSiemens(DataFactory.java:6103)
2006-10-13 16:47:20 xcompany.smtmonitor.data.DataFactory.refreshProcessControlView(DataFactory.java:5791)
2006-10-13 16:47:20 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:514)
2006-10-13 16:47:20 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:20 java.util.TimerThread.run(Unknown Source)
2006-10-13 16:47:23 Name: SMT Refreshing Threads
2006-10-13 16:47:23 Thread count: 4
2006-10-13 16:47:23 Active count: 4
2006-10-13 16:47:23 Active group count: 0
2006-10-13 16:47:23 Daemon: false
2006-10-13 16:47:23 Priority: 5
2006-10-13 16:47:26 Free memory: 4,907,336 bytes
2006-10-13 16:47:26 Max memory: 332,988,416 bytes
2006-10-13 16:47:26 Memory in use: 328,083,768 bytes
2006-10-13 16:47:26 ---------------------------------
2006-10-13 16:47:26 0. Name: CachedLayerTimer
2006-10-13 16:47:26 0. Id: 19
2006-10-13 16:47:26 0. Priority: 5
2006-10-13 16:47:26 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:26 0. State: RUNNABLE
2006-10-13 16:47:26 0. Alive: true
2006-10-13 16:47:26 java.util.LinkedList.addBefore(Unknown Source)
2006-10-13 16:47:26 java.util.LinkedList.access$300(Unknown Source)
2006-10-13 16:47:26 java.util.LinkedList$ListItr.add(Unknown Source)
2006-10-13 16:47:26 net.sourceforge.jtds.util.TimerThread.setTimer(TimerThread.java:175)
2006-10-13 16:47:26 net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3734)
2006-10-13 16:47:26 net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:997)
2006-10-13 16:47:26 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:320)
2006-10-13 16:47:26 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:667)
2006-10-13 16:47:26 xcompany.database.sql.SQLCommandBean.executeQuery(SQLCommandBean.java:91)
2006-10-13 16:47:26 xcompany.smtmonitor.data.SiemensWorks.getPCVPPM(SiemensWorks.java:409)
2006-10-13 16:47:26 xcompany.smtmonitor.data.DataFactory.createPCVPPMforSiemens(DataFactory.java:6103)
2006-10-13 16:47:26 xcompany.smtmonitor.data.DataFactory.refreshProcessControlView(DataFactory.java:5791)
2006-10-13 16:47:26 xcompany.smtmonitor.CachedLayerRefreshenerTask.run(CachedLayerRefreshenerTask.java:514)
2006-10-13 16:47:26 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:26 java.util.TimerThread.run(Unknown Source)
2006-10-13 16:47:35 Name: SMT Refreshing Threads
2006-10-13 16:47:37 Thread count: 4
2006-10-13 16:47:38 Active count: 4
2006-10-13 16:47:38 Active group count: 0
2006-10-13 16:47:38 Daemon: false
2006-10-13 16:47:38 Priority: 5
2006-10-13 16:47:42 Free memory: 35,316,120 bytes
2006-10-13 16:47:42 Max memory: 332,988,416 bytes
2006-10-13 16:47:42 Memory in use: 297,672,296 bytes
2006-10-13 16:47:42 ---------------------------------
2006-10-13 16:47:42 0. Name: CachedLayerTimer
2006-10-13 16:47:42 0. Id: 19
2006-10-13 16:47:42 0. Priority: 5
2006-10-13 16:47:42 0. Parent: SMT Refreshing Threads
2006-10-13 16:47:42 0. State: TIMED_WAITING
2006-10-13 16:47:42 0. Alive: true
2006-10-13 16:47:42 java.lang.Object.wait(Native Method)
2006-10-13 16:47:42 java.util.TimerThread.mainLoop(Unknown Source)
2006-10-13 16:47:42 java.util.TimerThread.run(Unknown Source)
4. Tomcat default logging file:
2006-10-13 16:47:36 ERROR CachedLayerRefreshenerTask: external error: Java heap space
5. DbConnectionBroker (connection pooling) logging file:
Handing out connection 1 --> 10/13/2006 04:47:01 PM
Handing out connection 0 --> 10/13/2006 04:47:01 PM
Handing out connection 1 --> 10/13/2006 04:47:01 PM
Handing out connection 0 --> 10/13/2006 04:47:02 PM
Warning. Connection 0 in use for 3141 ms
Warning. Connection 0 in use for 24891 ms
----> Error: Could not free connection!!!
I would appreciate for any help.What does your query bring back from this table?This is the query:
SELECT case sum(c.picked) when 0 then 0 else
((sum(c.picked)-(sum(c.picked)-(sum(c.vacuum)+sum(c.id
ent))))*cast((1000000/cast(sum(c.picked) as float))
as bigint)) end as PPM
FROM sip_comp c
LEFT JOIN sip_pcb pc ON pc.id=c.pcbid
LEFT JOIN sip_period p on p.id=pc.periodid
WHERE p.stationid=? AND pc.time BETWEEN ? AND ?Has anybody who knows SQL tried EXPLAIN PLAN to optimize this table? You're joining on a table with a million rows and you're wondering why the performance is poor?
What is the index situation with these tables?
.> When I execute it from query manager, it takes from 1
to 60 secs depend on servers availability. So how will that be any different for JDBC and Java?
..> You're right. Thats why I am here.
What I mean by that is we can't read minds, either. You need to get some hard data to tell you where the bottleneck is. Asking at a forum won't help.
But tell me, if the java process enters to this query
execution, and doesnt quit until OOM thrown, how can
be the problem in caching?I was guessing about caching, because I didn't know what the query was.
You expect a lot.
.> No.
Then how do you ever expect to solve this?
I tried YourKit Profiler at home, where I'm
developing software, but this OOM never thrown here,
even if I have the same database size.Then you aren't replicating the problem. You have to run it on the system that has the problem if you're going to solve it.
YourKit isn't an industry leader. How well do you know how to use it?
It just happened at the company where the system
runs, and I cannot run this profiler there because
the PC where my tomcat runs dramatically slowed.You have to run something to figure out what the problem is. What about Log4J, some trace logging statements and a batch job to harvest the log?
Bottom line: you've got to be a scientist and get some real data. We can theorize all we want here, but that won't get you to a solution.
% -
"Throwing OutOfMemory: class allocation" error on Linux x86-64
Hi.
My system is:
4 Intel Xeon processors, 24GB RAM
OS: Fedora Core 8 2.6.23.1-42.fc8
JRockit: 4.0.1 Mission Control for 1.6.0
I try to run Apache Tomcat (via jsvc and using APR) using JRockit JVM and I get the following error: "Throwing OutOfMemory: class allocation, 766248 loaded, 768K footprint in check_alloc (classalloc.c:213) 268 bytes requested." (multiple times) and then JVM crashes.
I use following config options for JVM: -Xms3000m -Xmx4000m -Xns:800m -XXkeepAreaRatio:20 -XXgcThreads:4 -XXcompressedRefs:enable=false -XX:+UseStringCache -Xgc:gencon -Xverbose:gc -Xverbosetimestamp
I also tried to run it with different heap sizes (more than 4GB) and without -XXcompressedRefs option specified (in which case JRockit used compressed references supporting heap size up to 32GB) but nothing helps - there is the same error every time.
I suspect that it has something to do with heap size though because when I run it on different machine with only 2GB of RAM and heap size set accordingly then it runs ok. I also need it to have plenty of heap space available because it is under heavy load.
Do you have any idea what can cause such a behaviour? I'm sure that I'm not exhausting available native memory (there is 24GB on that machine and normally there is 9-12GB used by applications, mainly Oracle DB Server, and the rest is cached by OS). Also Tomcat runs ok on Sun's JVM (meaning there is no OutOfMemory errors but there are some other issues which I hoped to resolve partly by using JRockit).I also thought the syntax of -XXcompressedRefs is as you wrote but in the newest JRockit version it's -XXcompressedRefs:enable=false (I found out the hard way, having to spend some time on searching it :) ). The syntax -XXcompressedRefs:false doesn't work in this version. If you're wondering if it has desirable effect: it has. As a proof, here is a snippet from log file:
"[memory ][Thu Sep 23 12:51:16 2010][28083] Running with 64 bit heap and uncompressed references.
[memory ][Thu Sep 23 12:51:16 2010][28083] GC mode: Garbage collection optimized for short pausetimes, strategy: Generational Concurrent Mark & Sweep."
About the post I didn't read this one but few on the same topic telling the same thing.
I will try later running it with -Xverbose:class later (I can't do it right away as it is a production environment I have trouble with).
The curious thing though is that on the second machine it runs ok with smaller heap size (software is identical, loads the same number of classes). So I wonder what is the way to make it work with larger heap (because I'm sure it will need it) - all the posts about this say that I should decrease heap size. Also in Sun JVMs there is an option to set PermGen size. I realize that there is no such thing in JRockit but maybe there is some setting related to memory used for storing loaded classes?
Thanks for any suggestions.
Edited by: user1562668 on Sep 23, 2010 2:46 PM -
OutOfMemory error in java.awt.image.DataBufferInt. init
We have an applet application that performs Print Preview of the images in the canvas. The images are like a network of entities (it has pictures of the entities involve (let's say Person) and how it links to other entities). We are using IE to launch the applet.
We set min heap space to 128MB, JVM max heap space to 256MB, java plugin max heap space to 256MB using the Control Panel > Java.
When the canvas width is about 54860 and height is 1644 and perform Print Preview, it thows an OutOfMemoryError in java.awt.image.DataBufferInt.<int>, hence, the Print Preview page is not shown. The complete stack trace (and logs) is as follows:
Width: 54860 H: 1644
Max heap: 254 # using Runtime.getRuntime().maxMemory()
javaplugin.maxHeapSize: 256M # using System.getProperties("javaplugin.maxHeapSize")
n page x n page : 1x1
Exception in thread "AWT-EventQueue-2" java.lang.OutOfMemoryError: Java heap space
at java.awt.image.DataBufferInt.<init>(Unknown Source)
at java.awt.image.Raster.createPackedRaster(Unknown Source)
at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source)
at java.awt.image.BufferedImage.<init>(Unknown Source)
at com.azeus.gdi.chart.GDIChart.preparePreview(GDIChart.java:731)
at com.azeus.gdi.chart.GDIChart.getPreview(GDIChart.java:893)
at com.azeus.gdi.ui.GDIUserInterface.printPreviewOp(GDIUserInterface.java:1526)
at com.azeus.gdi.ui.GDIUserInterface$21.actionPerformed(GDIUserInterface.java:1438)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Drilling down the cause of the problem. The OutOfMemory occurred in the constructor of DataBufferInt when it tried to create an int array:
public DataBufferInt(int size) {
super(STABLE, TYPE_INT, size);
data = new int[size]; # this part produce out of memory error when size = width X height
bankdata = new int[1][];
bankdata[0] = data;
The OutOfMemory error occurred when size is width * height (54860 X 1644) which is 90,189,840 bytes (~86MB).
I can replicate the OutOfMemory error when initiating an int array using a test class when it uses the default max heap space but if I increase the heap space to 256MB, it cannot be replicated in the test class.
Using a smaller width and height with product not exceeding 64MB, the applet can perform Print Preview successfully.
Given this, I think the java applet is not using the value assigned in javaplugin.maxHeapSize to set the max heap space, hence, it still uses the default max heap size and throws OutOfMemory in int array when size exceeds the default max heap space which is 64MB.
For additional information, below is some of the java properties (when press S in java applet console):
browser = sun.plugin
browser.vendor = Sun Microsystems, Inc.
browser.version = 1.1
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.awt.printerjob = sun.awt.windows.WPrinterJob
java.class.path = C:\PROGRA~1\Java\jre6\classes
java.class.version = 50.0
java.class.version.applet = true
java.runtime.name = Java(TM) SE Runtime Environment
java.runtime.version = 1.6.0_17-b04
java.specification.version = 1.6
java.vendor.applet = true
java.version = 1.6.0_17
java.version.applet = true
javaplugin.maxHeapSpace = 256M
javaplugin.nodotversion = 160_17
javaplugin.version = 1.6.0_17
javaplugin.vm.options = -Xms128M -Djavaplugin.maxHeapSpace=256M -Xmx256m -Xms128M
javawebstart.version = javaws-1.6.0_17
Kindly advise if this is a bug in JRE or wrong setting. If wrong setting, please advise on the proper way to set the heap space to prevent OutOfMemory in initializing int array.
Thanks a lot.
Edited by: rei_xanther on Jun 28, 2010 12:01 AM
Edited by: rei_xanther on Jun 28, 2010 12:37 AMrei_xanther wrote:
..But the maximum value of the int data type is 2,147,483,647. That is the maximum positive integer value that can be stored in (the 4 bytes of) a signed int, but..
..The value that I passed in the int array size is only 90,189,840...its only connection with RAM is that each int requires 4 bytes of memory to hold it.
new int[size] -- size is 90,189,840Sure. So the number of bytes required to hold those 90,189,840 ints is 360,759,360.
I assumed that one element in the int array is 1 byte. ..Your assumption is wrong. How could it be possible to store 32 bits (4 bytes) in 8 bits (1 byte)? (a)
a) Short of some clever compression algorithm applied to the data. -
OutOfMemory Error when deploying application in WL10
I've got an application that I am able to deploy from the WL9 console without hickups. But when I try to deploy it through WL10 console, it hangs and eventualy throws an OutOfMemory error. I've tried doubling the memory I allocate to WL but this does nothing. I can manually edit the config.xml to deploy the application and it works but I am unable to expand or view it from the console without getting the same OutOfMemory error. Any ideas?
I ran a profiler on wl when getting the OutOfMemory error and the class weblogic.j2ee.descriptor.wl.WeblogicEjbJarBeanDConfig seems to be the culprit. Does WL10 load EJBs differently into memory than WL9?
Also, I added the -verbosegc option to my vm args and it looks like the eden space isnt getting released. Not sure what that is supposed to tell me...
1318.268: [Full GC {Heap before gc invocations=166:
def new generation total 56576K, used 56576K [0xccc00000, 0xd04e0000, 0xd04e0000)
eden space 54912K, 100% used [0xccc00000, 0xd01a0000, 0xd01a0000)
from space 1664K, 100% used [0xd01a0000, 0xd0340000, 0xd0340000)
to space 1664K, 0% used [0xd0340000, 0xd0340000, 0xd04e0000)
tenured generation total 466048K, used 466048K [0xd04e0000, 0xecc00000, 0xecc00000)
the space 466048K, 100% used [0xd04e0000, 0xecc00000, 0xecc00000, 0xecc00000)
compacting perm gen total 83456K, used 83263K [0xecc00000, 0xf1d80000, 0xf8c00000)
the space 83456K, 99% used [0xecc00000, 0xf1d4fdf0, 0xf1d4fe00, 0xf1d80000)
No shared spaces configured.
1318.268: [Tenured: 466048K->466048K(466048K), 6.4704001 secs] 522624K->513170K(522624K), [Perm : 83263K->83263K(83456K)]Heap after gc invocations=167:
def new generation total 56576K, used 47122K [0xccc00000, 0xd04e0000, 0xd04e0000)
eden space 54912K, 85% used [0xccc00000, 0xcfa04970, 0xd01a0000)
from space 1664K, 0% used [0xd01a0000, 0xd01a0000, 0xd0340000)
to space 1664K, 0% used [0xd0340000, 0xd0340000, 0xd04e0000)
tenured generation total 466048K, used 466048K [0xd04e0000, 0xecc00000, 0xecc00000)
the space 466048K, 100% used [0xd04e0000, 0xecc00000, 0xecc00000, 0xecc00000)
compacting perm gen total 83456K, used 83263K [0xecc00000, 0xf1d80000, 0xf8c00000)
the space 83456K, 99% used [0xecc00000, 0xf1d4fdf0, 0xf1d4fe00, 0xf1d80000)
No shared spaces configured.
Edited by kadire at 06/20/2008 7:41 AM -
Greetings (Kodo3.4.1, JDK1.4, Oracle9i, Weblogic8.1)
I have a case where an OutOfMemory Error occurs during
PersistenceManager.currentTransaction().commit(). The problem is that,
although commit() throws this Error, the database transaction appears to
have already been committed.
Do you have any advice regarding what I should do in this case? I am
thinking that if OutOfMemory error occurs during commit, then it's possible
that the Kodo caches may be out of sync with the database itself, therefore
I should exit the JVM. The state of the records in the database should be
ok. What do you reckon?
Unfortunately there is no stack trace available, probably due to the Java
shortcoming as detailed in
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4753347
Cheers and thanks
.droo.Thanks Henning - My thinking was that under most circumstances only the
thread which received the OOM Error would need to die, assuming threads do
not share any objects. This means that it would be ok to recover from an
OOM which happens anywhere, EXCEPT: inside commit() after database has been
updated but possibly while Kodo is updating it's internally shared objects -
I don't know for sure as I don't have the source code and I don't know what
it's doing when it dies. But... You may be right, even the threading
system itself or the container may have cactus shared objects after an OOM.
I will try to get hold of CR282897.
Also thanks Denis, I am concerned with shared DataCache/QueryCaches but also
was wanting to find out from Kodo what else I should be concerned about, as
I don't know what commit is trying to do when it dies.
In any case I have decided that if this OOM happens, I will disable the
current application. Anyone who calls a SessionBean will be to go away
because the server is experiencing difficulties, and it will try to notify
the administrators. Hopefully I don't need to kill the VM because other
applications may also be running in the same app server instance.
Cheers and thanks
.droo.
On 21/9/06 7:49 AM, in article [email protected], "Henning
Andersen" <Henning Andersen> wrote:
Drew,
Out Of Memory Errors normally cannot be recovered from. If the VM is near an
out of memory error situation, the exception can be thrown in any thread, not
just your kodo-comitting-thread. This exception can happen almost anywhere and
nobody codes to handle it properly (for instance, most of java.util does not
handle this properly, eg. TreeMap.put will leave treeset inconsistent if it
cannot allocate an Entry). This means that if an out of memory error occurs
you really should restart the vm.
Only solution is to ensure that you do not get out of memory errors.
I saw a similar problem (but not the same) on kodo 3.4.1, which had to do with
creating many new objects and doing flushes in between, which would cause an
internal list to grow in the DataCacheStoreManager. The fix for this is in
CR282897, which I would recommend trying to get a hold of through support.On 20/9/06 8:51 PM, in article [email protected], "Denis
Sukhoroslov" <[email protected]> wrote:
Drew,
if you concerned on cache sync with DB, you can easly clear it in case of
OOM error:
KodoPersistenceManager pm = ...// get PM
DataCache dCache =
pm.getConfiguration().getDataCacheManager().getDataCache();
if (dCache != null) {
dCache.clear();
Denis. -
Object serialization failure during OutOfMemory error (EOFException)
Hello all,
We are seeing a very strange situation when writing a serializable object to a flat file, specifically during an OutOfMemory condition. Our application saves the state of an object if an error occurs, and retries at a later point by reviving the object from its serialized form. We recently encountered a series of EOFExcetions when trying to reload the serialized object. Looking at the serialized data, we see that the file is indeed incomplete, and that it appears to be the serialized representation of the data contained within the object that is missing (the structure of the object appears to be stored in the serialized file, but not the runtime data).
The code that produces and consumes these serialized objects is used in a variety of locations, and even in the case where these EOF errors occurred usually works as expected. The difference appears to be that the error condition which lead to the object serialization was in-fact an OutOfMemory error. That is, we had an OOM error elsewhere in our application, which caused our objects to be serialized to disk. During this serialization process we end up with corrupt (incomplete) serialization data.
So.. the question is: Is it possible that the OutOfMemory situation causes the JVM to incorrectly serialize an object (without an error), and specifically to omit runtime data (variables) from the serialized form of the object?
Thanks/jasonpolites wrote:
So.. the question is: Is it possible that the OutOfMemory situation causes the JVM to incorrectly serialize an object (without an error), and specifically to omit runtime data (variables) from the serialized form of the object?you're sure that the serialization process completed without an error? how do you know the the OOME did not cause the serialization to fail (because the serialization process itself will require more memory, hence if it is happening while the system is near the memory peak, it is likely to fail as well)? generally, when a jvm starts throwing OOME's all bets are off. failures in random places can easily cause the whole internal state of a system to become invalid. -
How to throw Custom Error message in Portal
Hi Experts !
I am working on CRM 5.0 and using BADI CRM_ORDER_STATUS for LEAD transaction.
This BADI is checking the userid when user is trying to change the status of a lead. if userid is not correct than it is throwing an Error Message in GUI but this message is reflecting in Portal as an Exception but what I need here is a custom Message similar to GUI.
Pls suggest .
With Thanks & Regards
NavneetHi Experts !
I am working on CRM 5.0 and using BADI CRM_ORDER_STATUS for LEAD transaction.
This BADI is checking the userid when user is trying to change the status of a lead. if userid is not correct than it is throwing an Error Message in GUI but this message is reflecting in Portal as an Exception but what I need here is a custom Message similar to GUI.
Pls suggest .
With Thanks & Regards
Navneet -
My iMac (2011) has been persistently throwing this error message: "SafariDAVClient quit unexpectedly." This started when I moved up to Mavericks, from Lion. Nothing crashes, and all I have to do is click "ok" to get rid of the error window. Still, annoying, as this darn Error message pops up at least every 60 seconds Help?
Here is thev error data that shows up in my Console after it happens. Of course, it might as well be GREEK TO ME!:
Process: SafariDAVClient [5937]
Path: /System/Library/PrivateFrameworks/BookmarkDAV.framework/Versions/A/Helpers/Safa riDAVClient
Identifier: SafariDAVClient
Version: 106
Code Type: X86-64 (Native)
Parent Process: launchd [202]
Responsible: SafariDAVClient [5937]
User ID: 501
Date/Time: 2014-02-02 15:40:22.026 -0800
OS Version: Mac OS X 10.9.1 (13B42)
Report Version: 11
Anonymous UUID: 38C42EEE-0927-2A62-02AC-FE5E1CEBFA44
Sleep/Wake UUID: F4BAEB51-39DA-42AE-8105-AB27895B59BD
Crashed Thread: 0 Dispatch queue: com.apple.Safari.BookmarkFolder.childrenAccess
As well, my iCloud Pref Pane will not open!
What the HECK is goin' on?feckinHell wrote:
As well, my iCloud Pref Pane will not open!
That's related since the process is attempting to load your Safari bookmarks from iCloud, and is crashing for some reason.
Try this:
Select the entire line that follows (triple-click to select it), then control-click, and from the contextual menu that appears, select Services > Reveal in Finder:
~/Library/Caches/com.apple.iCloudHelper
Drag that entire folder to the Desktop.
Quit Safari.
Attempt to open iCloud Preferences again. If it opens de-select Safari.
Launch Safari again and determine if the problem is fixed. -
Query throws an error while drilldowning a particular column in production
Hello Gurus,
There is an issue in a query when I run it on portal and when I try to drill down one particular column, it throws an error. I am pasting the error message below for your reference. This query works fine when I run in Bex. It also works fine when I run it on Quality portal. It only throws an error when I run it on production portal. I have got the patches and PI checked with BASIS team, everything seems to be fine.
Please help me out with this issue.
Termination message sent
ABEND RSBOLAP (000): Program error in class SAPMSSY1 method : UNCAUGHT_EXCEPTION
MSGV1: SAPMSSY1
MSGV3: UNCAUGHT_EXCEPTION
com.sap.ip.bi.base.application.exceptions
ABEND: Program error in class SAPMSSY1 method : UNCAUGHT_EXCEPTION
ABEND: System error in program SAPLRRK0 and form LRECH_01-01- (see long text)
Regards,Hi,
There are a couple of threads on the same issue.
Refer to these, just might be handy.
Re: Uncaught_exception in Report Designer
Program error in class SAPMSSY1 method : UNCAUGHT_EXCEPTION in Report
Good Luck!
Sandeep Tudumu -
Editable ALV - how to throw an error message for a specific line & field
Hi all,
I've implemented an editable ALV and also the ON_DATA_CHECK event to check the values, entered in the ALV. So this works fine and I can check the values.
But now, I want to throw an error message corresponding to the field in the ALV, where the error occured.
How can I throw this error message corresponding to a specific line/field in the ALV?
I was using REPORT_ATTRIBUTE_ERROR_MESSAGE and REPORT_ELEMENT_ERROR_MESSAGE but without success.
I'm also using a loop over the "CHANGES" in the ALV and within this loop, I use
elem_alv = node_alv->get_element( index = <change>-element_index )
to get the element for the message.
CALL METHOD lo_message_manager->REPORT_ELEMENT_ERROR_MESSAGE
EXPORTING
MESSAGE_TEXT = 'my message'
ELEMENT = elem_alv
* ATTRIBUTES =
* PARAMS =
* MSG_USER_DATA =
* IS_PERMANENT = ABAP_FALSE
* SCOPE_PERMANENT_MSG = CO_MSG_SCOPE_CTXT_ELEMENT
* MSG_INDEX =
* CANCEL_NAVIGATION =
* IS_VALIDATION_INDEPENDENT = ABAP_FALSE.
2.) is it right, that for an editable ALV, I can't use the WDDOBEFOREACTION to do the checks?
If I try to use this, I can't get the values of my ALV table to check it.
Thanks,
AndreasHi Andreas,
I have tried to replicate your problem and I am getting the desired output. I have a row by name TEMP_NEW in my ALV and I want to throw an error message whenever the user enters a value of 4 for that particular field. Please find my coding as below. The important thing is where we perform the actual comparison between the r_value and 4. r_value is defined in SALV_WD_S_TABLE_MOD_CELL as reference to type DATA. So suppose the user enters a value of say 3 in the TEMP_NEW field of the ALV then r_value would contain 3 but if you observe its type in debugging mode it would be as TYPE REF TO I and not TYPE I. So you cannot directly say something like:
"if ls_modified_cells-r_value = 3" as this would lead to a syntax error. Define a field-symbol say <temp> and then use it to get the actual value into it by saying like:
ASSIGN ls_modified_cells-r_value->* TO <temp>.
Then you can use this <temp> for comparison in your IF statement like:
IF <temp> = 3.
Find the entire coding as below:
METHOD check_data.
DATA: lr_node TYPE REF TO if_wd_context_node,
lr_element TYPE REF TO if_wd_context_element,
ls_modified_cells TYPE salv_wd_s_table_mod_cell.
FIELD-SYMBOLS <temp> TYPE data.
" get message manager
DATA lo_api_controller TYPE REF TO if_wd_controller.
DATA lo_message_manager TYPE REF TO if_wd_message_manager.
lo_api_controller ?= wd_this->wd_get_api( ).
CALL METHOD lo_api_controller->get_message_manager
RECEIVING
message_manager = lo_message_manager.
lr_node = wd_context->get_child_node( name = 'NODE' ).
LOOP AT r_param->t_modified_cells INTO ls_modified_cells.
lr_element = lr_node->get_element( index = ls_modified_cells-index ).
IF ls_modified_cells-attribute = 'TEMP_NEW'.
" Get the value extracted into the field symbol from the reference variable
ASSIGN ls_modified_cells-r_value->* TO <temp>.
" Use the value present in this field-symbol for your comparison
IF <temp> = 4.
" report message
CALL METHOD lo_message_manager->report_attribute_error_message
EXPORTING
message_text = 'Sample message text'
element = lr_element
attribute_name = ls_modified_cells-attribute.
ENDIF.
ENDIF.
ENDLOOP.
ENDMETHOD.
Hope this helps resolve your problem.
Regards,
Uday -
Java.lang.OutOfMemory error while retrieving data from a large table
Hi,
i am trying to fetch data using "executeQuery()" into a ResultSet from the database. But since the data in that table is large. i am recieving "java.lang.OutOfMemory" Error. So, to resolve that, i have used "setMaxRows()" for my statement object. This resolved the error but i don't recieve the entire data. If i call "executeQuery()" again, i recieve the same data. I don't even know a filtering criterion where by i can filter the data for each "executeQuery()"..
How can i resolve this problem
Thanx in advance
--ChaitanyaEither use some criteria you develop related to one of the keys on the table or use some sort of record limiting method.
Note the method of limiting will vary related to the database you are using. You will have to look at the documentation.
For example I am told this will work in MySQL to get 200 records starting at record 100.
SELECT * FROM myTable ORDER BY whatever ASC LIMIT 100,200
Because you are running out of memroy I assume the table is large,
I am not sure what the impact of the above will have on performance because if in the above if the order by is not based on an index at the server level all the records will be selected and sorted before the records are limited.
I would make sure you have an appropriate index.
If you use the advanced search over the user forums using "resultset paging" and possibility the database you are using you should be able to get some ideas.
I hope this makes sense to you.
rykk -
Cffunction, onSessionEnd throwing an error, please help
Hello;
I am using an application.cfc file to run my web site. I
added an argument for onmissingtemplate and when I did that, it
made my onSessionEnd statement throw an error:
this is my statement:
<cffunction name="onSessionEnd" returnType="void">
<cfargument name="theSession" type="struct"
required="true">
<cfset var duration =
dateDiff("s",arguments.theSession.created,now())>
<cflog file="#THIS.name#" text="Session lasted for
#duration# seconds.">
</cffunction>
and this is the error:
Invalid CFML construct found on line 85 at column 1.
ColdFusion was looking at the following text:
<
The CFML compiler was processing:
< marks the beginning of a ColdFusion tag.Did you mean LT
or LTE?
The error occurred in C:\Websites\4npp8b\Application.cfc:
line 85
83 : </cfcomponent>
84 :
85 : <cffunction name="onSessionEnd" returnType="void">
86 : <cfargument name="theSession" type="struct"
required="true">
87 : <cfset var duration =
dateDiff("s",arguments.theSession.created,now())>
I don't know if this will make a difference, but here is my
onsessionstart function:
<cffunction name="onSessionStart" returntype="any"
output="true">
<cfset SESSION.created = now()>
</cffunction>
I can't figure out what I did wrong to make it throw that
error. Any ideas?
CFmongernever mind, I figured it out. sorry to bother.
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