Cris's questions

I am using Weblogic 10.3.4 + Oracle DB both on Solaris machines (VM)

Unfortunately last week our app hosted on Weblogic became very very slow not being able to serve new users coming (everything lasted for 1h).

In order to find out the cause is we asked reports from the OS level , DB level.

The reports shown:

• a very intesive CPU usage that hour. (clearly was a peak from number of users using the system)
• Connection Pool reached the top limit on Weblogic (200 connections !)
• AWR stats from Db shown a degradation in response times.

NOW who was first the chicken or the egg ?

A very slow DB can cause WEBlogic to be slow and to reach the max numeber of connections from pool.

However if the CPU is very used , it might be that the threads holding the DB connections to be so busy that they do not return the connection to the pool (because the processor is busy)==> a new client comes a new connection is assgined and so on ...so the connection pool might be exhausted as well in this way ...?

Regards

Cris

"The version of Apache 2.0 that ships with some operating systems, including some versions of Solaris and Linux, is compiled with the following flags: -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 "

How can i detect this ? Is there a way to query Solaris that installed apache is compiled in that way or not ?

Thanks

I have a link to an http page that has a structure like this:

Parent Directory -
[DIR] _OLD/ 01-Feb-2012 06:05 -
[DIR] _Jan/ 01-Feb-2012 06:05 -
[DIR] _Dec/ 01-Jan-2012 06:05 -
...... [DIR] _Apr/ 01-May-2011 06:05 -
[DIR] _Mar/ 01-Apr-2011 06:05 -
[DIR] _Feb/ 01-Mar-2011 06:05 -
[DIR] WEB-INF/ 21-Aug-2009 13:44 -
[ ] nohup_XXX_XXX21.out 14-Feb-2012 09:05 1.6M
[ ] XXX_XXX21.log 14-Feb-2012 09:04 64K
[ ] XXX_XXX21_access.log 14-Feb-2012 08:31 8.0K
[ ] XXX_XXX21_access.log00013 14-Feb-2012 00:01 585K

I would like to downlload only the files present in the root directory...the xxxx files.

I have a solution using

curl -U Mozilla http://yourpage.com/bla.html > page
grep -o http://[^[:space:]]*.*log* page > links
wget -i link

but i wonder is not possible to do that only using wget ?

I installed Postgres on Ubuntu.

Via pgAdmin i can connect Postgres with a user i created BUT when i try other application that use the same user name and password I get : Ident authentication failed for user.

Why via pgAdmin i can connect and via a python client i get the above error message ?

Thanks!

Just upgraded Ubuntu to latest version but now I have two instance of Postgres.

8.4 and 9.1

The problem is that I do not know on what port the second one is running ?

How can I detect on what port is running....

IF i run cristi@cristi-hp:/usr/share/postgresql-common$ sudo -u postgres psql psql (8.4.8) Type "help" for help.

how can I use psql for 9.1 ?

both appear to run: cristi@cristi-hp:/usr/share/postgresql-common$ sudo /etc/init.d/postgresql start [sudo] password for cristi: * Starting PostgreSQL 8.4 database server [ OK ] * Starting PostgreSQL 9.1 database server

Thanks...

I used useradd to create a user called oracle

After that I used su oracle i get in terminal just a $

Do you know why the terminal is not something like oracle@laptophp:~$ and is just a $ ?

I am totally new to scripting in linux...so i want to port some simple window bat files to ubuntu.

First file is easy

  setenv.bat
    set ANT_HOME=c:\ant\apache-ant-1.7.1
    set JAVA_HOME=c:\java

in linux i did this and it seems ok

  setenv.sh
      #!/bin/bash
    JAVA_HOME=/usr/lib/jvm/java-6-sun-1.6.0.24/
    ANT_HOME=/usr/share/ant
    echo $JAVA_HOME
    echo $ANT_HOME

but now i want to port this bat file: startserver.bat

call ../config/setenv

call %ANT_HOME%/bin/ant -f ../config/common.xml start_db
call %ANT_HOME%/bin/ant -f ../config/common.xml start_server


pause

but i have no clue how can i do this in linux call ../config/setenv

thank you for any help , direction given.

Ubuntu 11.04
open terminal
JAVA_HOME=/usr/lib/jvm/java-6-sun-1.6.0.24/
export JAVA_HOME
echo $JAVA_HOME 
==>/usr/lib/jvm/java-6-sun-1.6.0.24/

i close the terminal 
open another terminal
echo $JAVA_HOME 
==>

Any idea why JAVA_HOME was not saved ?

Just installed mysql on latest Ubuntu and i want to access /var/lib/mysql directory It seems there are permissions set for this user :mysql - MySQL Server but i do not have the password for it. What can I do to access that directory ?