mingbo's tech tips

My users decided to move from CVS to SVN, and they want to use centralized LDAP server for user authentication, I need to setup a test server for prove of concept test. I found one no longer used server, and installed SVN packages as well as mod_dav_svn. The Apache HTTP server is already there. After I configured Apache HTTP follow the document at http://svnbook.red-bean.com/nightly/en/svn.serverconfig.httpd.html#svn.serverconfig.httpd.prereqs , I tried to use subversion client to connect to it but failed. I checked http server log and found the request was sent to the wrong place: # more error_log ...... [Wed May xx 16:07:36 2012] [error] [client 192.168.128.10] File does not exist: /var/www/html/repos [Wed May xx 16:07:36 2012] [error] [client 192.168.128.10] File does not exist: /var/www/html/favicon.ico [Wed May xx 16:07:49 2012] [error] [client 192.168.128.10] File does not exist: /var/www/html/repos [Wed May xx 16:07:49 2012] [error] [client 192.168.128.10] File d...

gimp 2.8 is out, I downloaded Windows version and installed. But when I try to run it, below error pops-up (the procedure entry point gzdirect could not be located in the dynamic link library zlib1.dll):   if I click on OK, the program can continue, but I want to fix it since I don’t want to miss anything, so I fired up Process explore and when the error pops-up, I located the zlib1.dll using Process Explorer’s DDL view   Here’s the output double click on zlib1.dll, and got below info   I did a file search under GIMP’s directory, there are 2 of them (one for 64-bit and one for 32-bit), and the version is different with the one in Windows directory:   seems the dll file within system directory was loaded instead of the one come with Gimp. I located the plugin’s directory by double click on the name (script-fu.exe) in Process Explorer And then copied zlib1.dll from GIMP’s bin directory (in my case, its C:\Program Files\GIMP 2\bin ) into the plug-ins di...

Symptom: When trying to do “edit table” or “query data” (as below) in pl/sql developer or try to run any SQL statement, the program will hang. Although schema browse works and connection to database server can be made withouth issue. Trouble shooting: I updated Oracle client to 11.2.0.3, upgrade pl/sql developer to the lasted version 9.0.6, no help.  I fired up TCPView (from www.sysinternals.com ) and found there were 2 connections to server: While on server side, we only got one: I did a few more test, and turned out, sometimes, the first connection you made to the database may disappear on server side, when that happens, plsqldeveloper will hang.   So I traced server side Oracle process using “strace” as below (the number after –p is process ID as in above picture 32641/oracle….) strace –p 32641 and in the trace file, I got: write(20, "\2\274\0\0\6\0\0\0\0\0ssed\25\1\0\1\7 EHCC Query H"..., 700) = -1 ECONNRESET (Connection reset by pee...