How berkeley db performance with appache tomcat

can any one tell me how berkeley db performs with appach tomcat jjava application server.
i m presised in finding the speed (accessing)

Hi,
Many of the folks that typically respond to these questions do not have direct experience with tomcat and Berkeley DB. It would be great if folks from the user community would chime in here and share their experiences and performance.
We do know that some/many folks use Berkeley DB with Tomcat so hopefully folks will respond.
Regards,
Ron

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Why would you have to scope so many variables in the session? Exactly how much information do you actually need to maintain throughout an entire user visit? You may want to review your scope for variables. I have discovered that for the most part, I only need to keep most data for the life of the page that uses it.

How to define perform with table statement in ECC6.0

Hi all,
I am working on ECC6.0 version. I m using a perform to populate an internal table like this:-
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                            USING gs_matnr.
& its forms is defined as: -
FORM treat_one_item TABLES   li_zmpsdtl STRUCTURE zmpsdtl
                     USING    gs_matnr TYPE matnr.
doing some action..............
endform.
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You have to use a global structure instead of a ddic structure after the STRUCTURE statement:
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FORM treat_one_item TABLES li_zmpsdtl STRUCTURE <b>gs_zmpsdt</b>
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...[/code]

Performance with Referenced Master on Time Capsule vs. Attached Hard Drive

My managed master library on my MBP is getting too big and I am running out of hard drive space. I am considering going to a "hybrid" situation, where all projects that have already been edited and stored in folders can be relocated to referenced.
Considering my options, I am wondering how Aperture will perform with referenced masters stored on the networked Time Capsule drive, as opposed to having to plug in a USB3 or Thunderbolt hard drive every time I want to re-edit those old photos (which is not very often).
I came across this article, which says to use a locally mounted drive:
http://support.apple.com/kb/TS3252
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It can be done, but you are "saving" the cost of an inexpensive external drive by accepting the cost of a convoluted administrative set-up. IME, for one person or any organization small enough to _not_ have a dedicated IT person/staff, that is a false economy. Typically, one of the admin tasks won't get done or won't get done right (you might need more space for back-ups on your Time Capsule, or you might forget exactly how you set up the TC drive to hold your Originals and put off moving more to it).
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My 2¢.
--Kirby.

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I am wondering how the performance of Appache web server + Tomcat => Java enabled web server is ?
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--Tim

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hI,
How we use Perform statement with offset, like
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Automatic length declaration in PERFORM statement
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DATA:
lv_offset        TYPE syoffi,
lv_length        TYPE flength,
lv_field          TYPE string.
lv_field = 'This is my value: hello world'.
lv_length = 5.
lv_offset = 18.
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                                                        lv_offset.
*&      Form READ_SEGRELEASE
*       text
*      -->P_LV_FIELD text
*      -->P_LV_LENGTH text
*      -->P_LV_OFFSET text
FORM read_segrelease USING    p_lv_field         TYPE string
                                                     p_lv_length      TYPE flength
                                                     p_lv_offset      TYPE syoffi.
DATA:
lv_result    TYPE string.
lv_result = p_lv_field+p_lv_offset(p_lv_length).
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How to deploy jfxpanel with applet to Tomcat.....

I want to deploy jfxpanel with in a panel in applet. But a message appear that jfxpanel class not found. when i include the jar file jfxrt.jar, tomcat isn't loaded this file. After that i use the environment varibale and set the class path in javafx runtime lib. but still unable the same exception appeared. I want your help to solve this issue..

Thank you igor. Your reply resolve most of the issues.. of my application. when i installed javafx runtime alone . the application link http://javafx.com/about-javafx/ that you have given me works fine but it changes the jre or something else... that my own developed application not able to make connection with the tomcat server. when i reinstalled jdk6u29 my application works fine and the link above is not working.
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java.lang.RuntimeException: java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel
     at java.lang.Class.getDeclaredConstructors0(Native Method)
     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
     at java.awt.EventQueue.access$000(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.security.AccessControlContext$1.doIntersectionPrivilege(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)
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Gnome-shell with nouveau - how is the performance

I have an old 8400GS and find gnome-shell's performance under nouveau pretty bad. Is it my card or the driver? If you have a more powerful card, how is the performance? I'm no gamer but is there a more powerful (none fan cooled) nvidia card that's better?

Looks okay.... guess my 8400GS is just underpowered for this driver. I ordered the 450 GTS so we'll see
$ grep flip /var/log/Xorg.0.log
[ 23641.419] (==) NOUVEAU(0): Page flipping enabled
$ grep drm /var/log/Xorg.0.log
[ 23641.418] drmOpenDevice: node name is /dev/dri/card0
[ 23641.418] drmOpenDevice: open result is 7, (OK)
[ 23641.418] drmOpenByBusid: Searching for BusID pci:0000:01:00.0
[ 23641.418] drmOpenDevice: node name is /dev/dri/card0
[ 23641.418] drmOpenDevice: open result is 7, (OK)
[ 23641.419] drmOpenByBusid: drmOpenMinor returns 7
[ 23641.419] drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0
[ 23641.419] (II) [drm] nouveau interface version: 0.0.16
[ 23641.419] drmOpenDevice: node name is /dev/dri/card0
[ 23641.419] drmOpenDevice: open result is 8, (OK)
[ 23641.419] drmOpenDevice: node name is /dev/dri/card0
[ 23641.419] drmOpenDevice: open result is 8, (OK)
[ 23641.419] drmOpenByBusid: Searching for BusID pci:0000:01:00.0
[ 23641.419] drmOpenDevice: node name is /dev/dri/card0
[ 23641.419] drmOpenDevice: open result is 8, (OK)
[ 23641.419] drmOpenByBusid: drmOpenMinor returns 8
[ 23641.419] drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0
[ 23641.419] (II) [drm] DRM interface version 1.4
[ 23641.419] (II) [drm] DRM open master succeeded.
$ dmesg | grep drm
[ 0.651085] [drm] Initialized drm 1.1.0 20060810
[ 0.661177] [drm] nouveau 0000:01:00.0: Detected an NV50 generation card (0x298200a2)
[ 0.664916] [drm] nouveau 0000:01:00.0: Attempting to load BIOS image from PRAMIN
[ 0.710278] [drm] nouveau 0000:01:00.0: ... appears to be valid
[ 0.710280] [drm] nouveau 0000:01:00.0: BIT BIOS found
[ 0.710281] [drm] nouveau 0000:01:00.0: Bios version 62.98.47.00
[ 0.710283] [drm] nouveau 0000:01:00.0: TMDS table version 2.0
[ 0.710284] [drm] nouveau 0000:01:00.0: Found Display Configuration Block version 4.0
[ 0.710286] [drm] nouveau 0000:01:00.0: Raw DCB entry 0: 02000300 00000028
[ 0.710287] [drm] nouveau 0000:01:00.0: Raw DCB entry 1: 01000302 00020030
[ 0.710289] [drm] nouveau 0000:01:00.0: Raw DCB entry 2: 04011310 00000028
[ 0.710290] [drm] nouveau 0000:01:00.0: Raw DCB entry 3: 010223f1 00c0c080
[ 0.710292] [drm] nouveau 0000:01:00.0: DCB connector table: VHER 0x40 5 16 4
[ 0.710294] [drm] nouveau 0000:01:00.0: 0: 0x00001030: type 0x30 idx 0 tag 0x07
[ 0.710296] [drm] nouveau 0000:01:00.0: 1: 0x00000200: type 0x00 idx 1 tag 0xff
[ 0.710297] [drm] nouveau 0000:01:00.0: 2: 0x00000110: type 0x10 idx 2 tag 0xff
[ 0.710299] [drm] nouveau 0000:01:00.0: 3: 0x00000111: type 0x11 idx 3 tag 0xff
[ 0.710300] [drm] nouveau 0000:01:00.0: 4: 0x00000113: type 0x13 idx 4 tag 0xff
[ 0.710303] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 0 at offset 0xD710
[ 0.735573] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 1 at offset 0xDAB5
[ 0.741906] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 2 at offset 0xE364
[ 0.741911] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 3 at offset 0xE456
[ 0.742976] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 4 at offset 0xE655
[ 0.742977] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table at offset 0xE6BA
[ 0.762981] [drm] nouveau 0000:01:00.0: 0xE6BA: Condition still not met after 20ms, skipping following opcodes
[ 0.762989] [drm] nouveau 0000:01:00.0: timingset 255 does not exist
[ 1.160045] [drm] nouveau 0000:01:00.0: 1 available performance level(s)
[ 1.160047] [drm] nouveau 0000:01:00.0: 3: memory 400MHz core 567MHz shader 1400MHz fanspeed 100%
[ 1.160055] [drm] nouveau 0000:01:00.0: Register 0x00004030 not found in PLL limits table
[ 1.160090] [drm] nouveau 0000:01:00.0: c: memory 399MHz core 566MHz shader 1400MHz
[ 1.160209] [drm] nouveau 0000:01:00.0: Detected 512MiB VRAM
[ 1.161277] [drm] nouveau 0000:01:00.0: 512 MiB GART (aperture)
[ 1.173455] [drm] nouveau 0000:01:00.0: DCB encoder 1 unknown
[ 1.173457] [drm] nouveau 0000:01:00.0: TV-1 has no encoders, removing
[ 1.174154] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 1.174155] [drm] No driver support for vblank timestamp query.
[ 1.428713] [drm] nouveau 0000:01:00.0: allocated 1920x1080 fb: 0x40000000, bo ffff880221feec00
[ 1.483825] drm: registered panic notifier
[ 1.483828] [drm] Initialized nouveau 0.0.16 20090420 for 0000:01:00.0 on minor 0

How can I perform this kind of range join query using DPL?

How can I perform this kind of range join query using DPL?
SELECT * from t where 1<=t.a<=2 and 3<=t.b<=5
In this pdf : http://www.oracle.com/technology/products/berkeley-db/pdf/performing%20queries%20in%20oracle%20berkeley%20db%20java%20edition.pdf,
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I'm sorry, I think I've misled you. I suggested that you perform two queries and then take the intersection of the results. You could do this, but the solution to your query is much simpler. I'll correct my previous message.
Your query is very simple to implement. You should perform the first part of query to get a cursor on the index for 'a' for the "1<=t.a<=2" part. Then simply iterate over that cursor, and process the entities where the "3<=t.b<=5" expression is true. You don't need a second index (on 'b') or another cursor.
This is called "filtering" because you're iterating through entities that you obtain from one index, and selecting some entities for processing and discarding others. The white paper you mentioned has an example of filtering in combination with the use of an index.
An alternative is to reverse the procedure above: use the index for 'b' to get a cursor for the "3<=t.b<=5" part of the query, then iterate and filter the results based on the "1<=t.a<=2" expression.
If you're concerned about efficiency, you can choose the index (i.e., choose which of these two alternatives to implement) based on which part of the query you believe will return the smallest number of results. The less entities read, the faster the query.
Contrary to what I said earlier, taking the intersection of two queries that are ANDed doesn't make sense -- filtering is the better solution. However, taking the union of two queries does make sense, when the queries are ORed. Sorry for the confusion.
--mark

How berkeley db performance with appache tomcat

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