krislioe's articles:

Items(77) /8 Next >> Last >|

Signed Applet vs Editing Java Policy file 3 297 (5/14/2010 9:59:26 AM) comp.lang.java.programmer Hi All, We are using Applet in our jsf/jsp application to do just ONE thing : print into local printer. To avoid the user confirmation dialog , two possible approach are : - signed the applet - add 'perm... Krist

Applet to run on Win 98, Win ME, Win XP, Win Vista & Win 7 ?? 6 147 (5/4/2010 3:54:23 AM) comp.lang.java.programmer Hi gurus, In our JSF/JSP application we use applet to do client side printing. The chalenge is that the application must run on various windows version, i.e : Win 98, Win ME, Win XP, Win Vista & Win 7. ... Krist

Creating Heap dump , jmap or any other way ? 1 60 (2/26/2010 2:04:24 AM) comp.lang.java.programmer Hi gurus, I want to do heap dump analysis to find out what comsume our 3GB heap. We areusing Linux and SUn JVM 1.5.0_15 64 bit I try to use jmap, but it gave me this error : Error attaching to process sun.... Krist

JVM doing many Full GC and Unloading class sun.reflect.GeneratedMethodAccessor 1 28 (2/22/2010 11:11:15 PM) comp.lang.java.programmer Dear all, I capture at a time (once in 4 day ) that the JVM doing many GCs but not many memory is freed. at the same time in the JVM log there are many : [Unloading class sun.reflect.GeneratedSerializationCons... Krist

Am I short of memory for the JVMs ? 4 28 (2/18/2010 7:59:38 AM) comp.lang.java.programmer Hi all, In our apps server, we are running 4 JVMs with the following settings : JVM_1 : -ms3072M -mx3072M -XX:MaxPermSize=1024M JVM_2 : -ms3072M -mx3072M -XX:MaxPermSize=1024M JVM_3 : -ms1024M -mx1536M -XX... Krist

Is this GC.log summary indicating memory leak ? 18 28 (2/18/2010 7:38:01 AM) comp.lang.java.programmer Hi All, I am trying to find out whether our app is experiencing memory leak by doing verbose gc on 4 days , here is the summary : (the detail is too long too attached) I use 2 JVMs with thi setting : -ms3072... Krist

Preventing Memory Leak when using HashMap 9 25 (2/11/2010 8:32:12 AM) comp.lang.java.programmer Hi all, Two classes below pass HashMap to each other, I want to avoid the memory leak, other than using HashMap.remove(key), how to avoid memory leak in my code below ? FormInv class get return value from a l... Krist

dbms_session.set_context from JDBC fails mysteriously, how can I trap it ? 2 300 (2/10/2010 11:54:09 AM) comp.databases.oracle.server Hi gurus, Our ADF application connect via JDBC to Oracle DB and using VPD . This is done by executing dbms_session.set_context('vpd_new','loc_code', pLocCode) at the beginning of the session. Mysteriou... Krist

What is the difference between Memory Usage and Heap Usage in my JVM Metrics ? 8 22 (2/8/2010 11:08:41 PM) comp.lang.java.programmer Hi all, In my Apps Server console (OC4J) JVM Metrics, there are two columns about memory : Memory Usage (MB) -> Shows the amount of physical memory used by the JVM. Heap Usage (MB) -> Shows the amoun... Krist

Could this unclosed() byteArrayInputStream cause high Heap usage ? 6 231 (2/5/2010 11:21:04 AM) comp.lang.java.programmer Hi all, As part of our reporting integrated with our JSF/JSP application, the report is converted to PDF then sent to browser for user to display. mean while during peak load our Heap usage could reach 3.5... Krist

krislioe's replies:

Items(30) /3 Next >> Last >|

basic GC question related with String objects 14 17 (1/17/2009 2:05:34 AM) comp.lang.java.programmer Hi All, As we know, dynamic String assigment will cause ineffecient resources usage, eg : String sample1 =3D new String(=93Builder.com=94); sample1 +=3D =93 is =93; sample1 +=3D =93the place =93; sample1 +=3D... krislioe (119)

Where can I download SUN jdk-1_5_0_14 ? 4 42 (1/19/2009 3:50:34 PM) comp.lang.java.programmer Hi All, Where can I download SUN jdk-1_5_0_14 ?, on the website I only found jdk-1_5_0_17, while our software requires jdk-1_5_0_14. Thank you very much, xtanto ... krislioe (119)

Low cardinality,high concurrent in OLTP, how to improve query performance? 11 31 (1/31/2009 10:54:15 PM) comp.databases.oracle.server Hi sql gurus, In our racle DB 10g application we have a table that is INSERTED highly concurrently in OLTP application (but are NEVER UPDATED, Insert Only). There is a column : IS_PROCESSED VARCHAR2(1) , value... krislioe (119)

How to create pl/sql that run efficiently in background ? 12 35 (2/3/2009 3:03:14 AM) comp.databases.oracle.server Hi sql gurus, We have application on Oracle 10g where 150+users (from multiple branch) concurrently input transaction. The transaction number is centralized, means all user use same transaction number counter.... krislioe (119)

What index do I need for this query ? 11 30 (3/24/2009 11:04:46 PM) comp.databases.oracle.server Hi gurus, I have the query like below : SELECT INVH.REGS_CODE, INVH.CUST_CODE, INVH.TAXDATE, INVH.TAXNO, INVH.INV_ID, INVH.INV_NO, INVH.INV_DATE, INVH.LOC_CODE, INVH.LOCGRP_CODE, NVL(INVH.DISCBM_RP,0) ... krislioe (119)

Could this unclosed() byteArrayInputStream cause high Heap usage ? 6 231 (2/5/2010 11:21:04 AM) comp.lang.java.programmer Hi all, As part of our reporting integrated with our JSF/JSP application, the report is converted to PDF then sent to browser for user to display. mean while during peak load our Heap usage could reach 3.5... krislioe (119)

What is the difference between Memory Usage and Heap Usage in my JVM Metrics ? 8 22 (2/8/2010 11:08:41 PM) comp.lang.java.programmer Hi all, In my Apps Server console (OC4J) JVM Metrics, there are two columns about memory : Memory Usage (MB) -> Shows the amount of physical memory used by the JVM. Heap Usage (MB) -> Shows the amoun... krislioe (119)

Preventing Memory Leak when using HashMap 9 25 (2/11/2010 8:32:12 AM) comp.lang.java.programmer Hi all, Two classes below pass HashMap to each other, I want to avoid the memory leak, other than using HashMap.remove(key), how to avoid memory leak in my code below ? FormInv class get return value from a l... krislioe (119)

Is this GC.log summary indicating memory leak ? 18 28 (2/18/2010 7:38:01 AM) comp.lang.java.programmer Hi All, I am trying to find out whether our app is experiencing memory leak by doing verbose gc on 4 days , here is the summary : (the detail is too long too attached) I use 2 JVMs with thi setting : -ms3072... krislioe (119)

Am I short of memory for the JVMs ? 4 28 (2/18/2010 7:59:38 AM) comp.lang.java.programmer Hi all, In our apps server, we are running 4 JVMs with the following settings : JVM_1 : -ms3072M -mx3072M -XX:MaxPermSize=1024M JVM_2 : -ms3072M -mx3072M -XX:MaxPermSize=1024M JVM_3 : -ms1024M -mx1536M -XX... krislioe (119)