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• Python: inserting double or single quotes around a string

  - by Jessy

  Im using python to access a MySQL database and im getting a unknown column in field due to quotes not being around the variable. code below: cur = x.cnx.cursor() cur.execute('insert into tempPDBcode (PDBcode) values (%s);' % (s)) rows = cur.fetchall() How do i manually insert double or single quotes around the value of s? I've trying using str() and manually concatenating quotes around s but it still doesn't work. The sql statement works fine iv double and triple check my sql query.

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• Encrypt file using M2Crypto

  - by Bear

  It is known that I can read the whole file content in memory and encrypt it using the following code. contents = fin.read() cipher = M2Crypto.EVP.Cipher(alg="aes_128_cbc", key = aes_key, iv = aes_iv, op = 1) encryptedContents = cipher.update(contents) encryptedContents += cipher.final() But what if the file size is large, is there a way for me to pass the input stream to M2Crypto instead of reading the whole file first?

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• Drawing connected lines with OpenGL

  - by user146780

  I'm drawing convex polygons with OpenGL. I then do the same thing but use GL_LINE_LOOP. The problem I have is the lines are not always connected. How could I ensure that the lines are always connected? In the photo below, Iv highlighted in green, the corners that are connected and in red, those that are not. I would like for them to be all like the green ones. http://img249.imageshack.us/i/notconnected.png/ Thanks

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• codeIgnitor helper file problem wont see anchor function

  - by user369616

  Hi everyone im new to a PHP framework codeIgniter, I am going over the user guide iv ran in to a problem, I am on the part where you load helper file but for some reason my code just isnt working I keep getting this error: Fatal error: Call to undefined function anchor() in /home/fresherd/public_html/CI/system/application/views/blogview.php on line 17 now im not 100% sure that it is loading the helper file this could be causing the but I am not sure how to detect the file has been loaded any advice will help many thanks, Alan

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• What is the best nuclear missile crypto system?

  - by The Rook

  You are on a submarine and there is an encrypted message that you want to read. Two people must use their keys at the same time in order to obtain the plain text. What is best cryptographic primitive to use? Are the following two implementations suitable? plain_text=decrypt(Key1 XOR key2,ciper_text,IV) plain_text=decrypt(Key1,rc4_encrypt(key2,ciper_text,IV2),IV1)

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• Assigning a home DNS to be secondary only?

  - by Sanarothe

  Hi. I have a small domain lab set up at home, including DNS/DHCP on the Win2008 server. I'd like to be able to refer to my domain clients by name, but I find that I get a slowdown when using an internal DNS. Win DNS refers to my ISP's upstream dns (I also tried Google's DNS servers for a little while) but it feels like there's an extra couple seconds for each request when I'm using anything except the DNS servers fetched via DHCP from my ISP. I tried adding my local DNS to my router's DHCP (Need to use router to fetch DHCP info from ISP, even though none of it ever changes, since I'm behind NAT) So, my question is: Is there any way to set my internal DNS server to be secondary to a dynamically retrieved upstream DNS? I want the internal server to be queried only if the ISP dns fails, or to be queried only for a certain TLD (.iv right now. I guess for best practices I should change it to .internal)

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• Ubuntu 11.10, using wget/curl fails with ssl

  - by Greg Spiers

  Note: See edit 3 for solution On a completely new install of Ubuntu I'm getting the following errors when using wget: wget https://test.sagepay.com --2012-03-27 12:55:12-- https://test.sagepay.com/ Resolving test.sagepay.com... 195.170.169.8 Connecting to test.sagepay.com|195.170.169.8|:443... connected. ERROR: cannot verify test.sagepay.com's certificate, issued by `/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL SGC CA': Unable to locally verify the issuer's authority. To connect to test.sagepay.com insecurely, use `--no-check-certificate'. I've tried installing ca-certificates and configuring the ca-certs and they appear to all be setup in /etc/ssl/certs. The same issue exists for cURL: curl https://test.sagepay.com curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed Which leads me to believe it's something wrong with openssl server wide. wget and curl both work correctly locally on OSX and I have confirmed with a few people that it's working on their servers so I suspect it's nothing to do with the server I'm attempting to connect to. Any ideas or suggestions on things to try to narrow it down? Thank you Edit As requested verbose output from curl curl -Iv https://test.sagepay.com * About to connect() to test.sagepay.com port 443 (#0) * Trying 195.170.169.8... connected * Connected to test.sagepay.com (195.170.169.8) port 443 (#0) * successfully set certificate verify locations: * CAfile: none CApath: /etc/ssl/certs * SSLv3, TLS handshake, Client hello (1): * SSLv3, TLS handshake, Server hello (2): * SSLv3, TLS handshake, CERT (11): * SSLv3, TLS alert, Server hello (2): * SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed * Closing connection #0 curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed More details here: http://curl.haxx.se/docs/sslcerts.html Edit 2 Using the hash from your comment I see this: ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al 7651b327.0 lrwxrwxrwx 1 root root 59 2012-03-27 12:48 7651b327.0 -> Verisign_Class_3_Public_Primary_Certification_Authority.pem ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al Verisign_Class_3_Public_Primary_Certification_Authority.pem lrwxrwxrwx 1 root root 94 2012-01-18 07:21 Verisign_Class_3_Public_Primary_Certification_Authority.pem -> /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -rw-r--r-- 1 root root 834 2011-09-28 14:53 /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt ubuntu@srv-tf6sq:/etc/ssl/certs$ more /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -----BEGIN CERTIFICATE----- MIICPDCCAaUCEDyRMcsf9tAbDpq40ES/Er4wDQYJKoZIhvcNAQEFBQAwXzELMAkG A1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFz cyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2 MDEyOTAwMDAwMFoXDTI4MDgwMjIzNTk1OVowXzELMAkGA1UEBhMCVVMxFzAVBgNV BAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmlt YXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhE BarsAx94f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/is I19wKTakyYbnsZogy1Olhec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0G CSqGSIb3DQEBBQUAA4GBABByUqkFFBkyCEHwxWsKzH4PIRnN5GfcX6kb5sroc50i 2JhucwNhkcV8sEVAbkSdjbCxlnRhLQ2pRdKkkirWmnWXbj9T/UWZYB2oK0z5XqcJ 2HUw19JlYD1n1khVdWk/kfVIC0dpImmClr7JyDiGSnoscxlIaU5rfGW/D/xwzoiQ -----END CERTIFICATE----- But doing the steps myself I end up with a different hash: strace -o /tmp/foo.out curl -Iv https://test.sagepay.com and grep ssl /tmp/foo.out open("/lib/x86_64-linux-gnu/libssl.so.1.0.0", O_RDONLY) = 3 stat("/etc/ssl/certs/415660c1.0", {st_mode=S_IFREG|0644, st_size=834, ...}) = 0 open("/etc/ssl/certs/415660c1.0", O_RDONLY) = 4 stat("/etc/ssl/certs/415660c1.1", 0x7fff7dab07b0) = -1 ENOENT (No such file or directory) readlink -f /etc/ssl/certs/415660c1.0 /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt more /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -----BEGIN CERTIFICATE----- MIICPDCCAaUCEDyRMcsf9tAbDpq40ES/Er4wDQYJKoZIhvcNAQEFBQAwXzELMAkG A1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFz cyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2 MDEyOTAwMDAwMFoXDTI4MDgwMjIzNTk1OVowXzELMAkGA1UEBhMCVVMxFzAVBgNV BAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmlt YXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhE BarsAx94f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/is I19wKTakyYbnsZogy1Olhec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0G CSqGSIb3DQEBBQUAA4GBABByUqkFFBkyCEHwxWsKzH4PIRnN5GfcX6kb5sroc50i 2JhucwNhkcV8sEVAbkSdjbCxlnRhLQ2pRdKkkirWmnWXbj9T/UWZYB2oK0z5XqcJ 2HUw19JlYD1n1khVdWk/kfVIC0dpImmClr7JyDiGSnoscxlIaU5rfGW/D/xwzoiQ -----END CERTIFICATE----- Any other ideas? Thank you for the help so far :) Edit 3 So it turns out that installing the ca-certificates package didn't install the one that I needed. I found this post about certificates being presented out of order. This seems to be the case with my request to sagepay. The solution ended up being to install another CA certificate from Verisign. I'm not sure why this fixes the issue with it being out of order but it does, but I suspect the out of order issue really isn't a problem at all and it was infact because I was missing a certificate all along. The additional certificate is available in that post but I didn't want to blindly trust it. I've looked at the list of CA certificates from cURL's site and it is listed there so I do trust it. The certificate: Verisign Class 3 Public Primary Certification Authority ======================================================= -----BEGIN CERTIFICATE----- MIICPDCCAaUCEHC65B0Q2Sk0tjjKewPMur8wDQYJKoZIhvcNAQECBQAwXzELMAkGA1UEBhMCVVMx FzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmltYXJ5 IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2MDEyOTAwMDAwMFoXDTI4MDgwMTIzNTk1OVow XzELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAz IFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUA A4GNADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhEBarsAx94 f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/isI19wKTakyYbnsZogy1Ol hec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0GCSqGSIb3DQEBAgUAA4GBALtMEivPLCYA TxQT3ab7/AoRhIzzKBxnki98tsX63/Dolbwdj2wsqFHMc9ikwFPwTtYmwHYBV4GSXiHx0bH/59Ah WM1pF+NEHJwZRDmJXNycAA9WjQKZ7aKQRUzkuxCkPfAyAw7xzvjoyVGM5mKf5p/AfbdynMk2Omuf Tqj/ZA1k -----END CERTIFICATE----- I put this in a file in: /usr/share/ca-certificates/curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt I then modified the /etc/ca-certificates.conf and added the following line at the end: curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt After that I ran the command: sudo update-ca-certificates Looking into the /etc/ssl/certs directory I see it correctly linked: ls -al | grep cURL lrwxrwxrwx 1 root root 69 2012-03-27 16:03 415660c1.0 -> Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem lrwxrwxrwx 1 root root 69 2012-03-27 16:03 7651b327.0 -> Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem lrwxrwxrwx 1 root root 101 2012-03-27 16:03 Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem -> /usr/share/ca-certificates/curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt And everything works! curl -I https://test.sagepay.com HTTP/1.1 200 OK...

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• sudo displays typed password in bash script

  - by Andy

  Hullo, I have a bash script that uses sudo a few times. There's a couple of strange points about it though. It asks me for my password a few seconds after I've already entered it for a previous command. The second time I enter my password, it's echoed to the display. Here's the relevant bits of the script. sudo service apache2 stop drush sql-dump --root="$SITE_DIR" --structure-tables-key=svn --ordered-dump | grep -iv 'dump completed on' | sudo tee "$DB_DIR/${SITE_NAME}.sql" > /dev/null sudo svn diff "$DB_DIR" | less sudo svn commit -m "$MESSAGE" "$DB_DIR" sudo service apache2 start The first password is to stop apache, and it works as expected. As mentioned, the sudo tee doesn't 'remember' that I have elevated privileges, asks for the password again, and echoes it to the screen. Given that tee is all about echoing to screen, I've played around a little with simple scripts which have | sudo tee, and they all work as expected. Ideas?! TIA Andy

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• Scanned JPEGs are large and slow to load - can they be optimized losslessly?

  - by Alistair Knock

  I have hundreds of JPEG photographs which were scanned about 5 years ago from negative using a Konica Minolta DiMAGE Scan Dual IV. The dimensions are ~4500x3000, and the filesize is around 12Mb, compared to shots from a DSLR with dimensions of 3000x2300 and filesize of 2-4Mb (actually, these are the output from a RAW convertor). The filesize is obviously quite a big difference, but the issue that's bothering me is that the (perceived) loading time is at least 10 times slower. Is this size/speed discrepancy likely to be because the scanner software saved the JPEGs inefficiently / using an old compression format, or is it simply that the scanned negatives contain much more "detail" (in the form of grain/noise) than the digital images? If the former, is there a way to losslessly optimize them? I've tried re-exporting the scanned files to full size JPEG from my RAW software but the filesize is pretty much the same. Both files will have been saved at 100 quality.

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• Is it safe to buy a replacement laptop battery that has slightly different voltage than the original?

  - by Hugoagogo

  I'm looking for a new battery for my Acer Aspire 4741g laptop. I am trying to get a higher capacity battery. Many sites (like this one and this one) list batteries that are interchangeable with the battery that came with the laptop (AS10D41). These batteries have higher capacity, but also marginally lower voltage (11.1V vs. 11.8V). Is this a problem? Does it mean that the battery is actually incompatible? The replacement battery I am looking at is AS10G3E, and is listed in many places as being compatible with the AS10D41, but nobody makes any mention of the differing voltages. I am trying to find out what kind of problems a lower voltage battery can cause. I know P=IV; with reduced voltage, will the machine draw more current, possibly damaging components? I'm just speculating, but I'm worried about the chance that using a battery at a lower voltage will damage my laptop.

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• Calculating RAM Performance? Example: DDR3-2133 CL9-11-10-28 1.65V vs DDR3-1600 CL10-10-10-30 1.5V

  - by user1131467

  How do you calculate the relative performance of PC RAM? For example, what is the relative performance of the following: G.Skill Ripjaws Z 8 x 4GB Kit, DDR3-2133, [email protected] G.Skill Ripjaws Z 4 x 8GB Kit, DDR3-1600, [email protected] If it's relevant, when they are used in a top of the line ASUS Rampage IV Extreme motherboard and Intel i7 3960X? By performance, I mean relative: read latency write latency read bandwidth write bandwidth Please include working. (I mean how did you arrive at the figures based on timing and DDR3-speed)

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• Notebook with NVIDIA Optimus not switching video card in games

  - by user140739

  I have a Samsung RC720 notebook with Intel Integrated Graphics and NVIDIA GeForce GT 520M. As you can see it has two video adapters and Optimus is supposed to switch between them. But when I choose dedicated GPU in NVIDIA Control Panel and try to run, for example, GTA IV, it uses integrated graphics and I get very poor performance. I have already installed last NVIDIA and notebook drivers, chose high-performance in NVIDIA Control Panel, tried to execute with "Run with graphics processor..." context option and so on. Thanks for help.

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• Manage Dell workstations with OpenManage Essentials (OME)

  - by Jonathan Rioux

  How can I manage Dell workstations with OpenManage Essentials ? First, is it possible? Because iv read that only Dell servers can be managed with OME. I would like to inventory each Dell workstations I have in my environment, and be able to see their service tag with warranty expiration, etc. Or which product must I use to do this? There are so much Dell management products like OMCI, OMCC, ITA, etc!! I am so lost with all these products.

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• Apache log lines contain "..."

  - by mtah

  We have a custom log line format for Apache logs which are analyzed. CustomLog "|/usr/sbin/rotatelogs -l /mnt/var/log/apache2/access-%Y%m%d%H%M%S.log 900" "%a %{%s}t \"%r\"" However, some log lines are mysteriously shortened with "..." for some reason, but how can this be? The shortest length line discovered where this occurs is 317 chars while the longest line is way over 2000 chars. "GET /exposure?sg=&ap=0x0&fv=WIN%2010,0,22,87&si=IH95VDUAVLJ0&pt=Lage%20hjemmelaget%20sengegavl%20-%20Forum%20-%20Diskusjon.no&iv=0&sd=1024x600&ct=680&tz=-120&eu=http%3A//www.diskusjon.no/index.php%3Fshowtopic%3D1011139&l...AS3&an=NO%20-%20180x500%20Pretail%20CPC&wd=1024x483&rf=http%3A//www.google.no/search%3Fhl%3Dno%26source%3Dhp%26q%3Dsengegavl+lage%26meta%3D%26aq%3D2%26aqi%3Dg10%26aql%3D%26oq%3Dsengega%26gs_rfai%3D&ui=3INYF5QAZL10&ws=0x417&ad=180x500&sa= HTTP/1.1"

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• How to decrypt an encrypted Apple iTunes iPhone backup?

  - by afit

  I've been asked by a number of unfortunate iPhone users to help them restore data from their iTunes backups. This is easy when they are unencrypted, but not when they are encrypted, whether or not the password is known. As such, I'm trying to figure out the encryption scheme used on mddata and mdinfo files when encrypted. I have no problems reading these files otherwise, and have built some robust C# libraries for doing so. (If you're able to help, I don't care which language you use. It's the principle I'm after here!) The Apple "iPhone OS Enterprise Deployment Guide" states that "Device backups can be stored in encrypted format by selecting the Encrypt iPhone Backup option in the device summary pane of iTunes. Files are encrypted using AES128 with a 256-bit key. The key is stored securely in the iPhone keychain." That's a pretty good clue, and there's some good info here on Stackoverflow on iPhone AES/Rijndael interoperability suggesting a keysize of 128 and CBC mode may be used. Aside from any other obfuscation, a key and initialisation vector (IV)/salt are required. One might assume that the key is a manipulation of the "backup password" that users are prompted to enter by iTunes and passed to "AppleMobileBackup.exe", padded in a fashion dictated by CBC. However, given the reference to the iPhone keychain, I wonder whether the "backup password" might not be used as a password on an X509 certificate or symmetric private key, and that the certificate or private key itself might be used as the key. (AES and the iTunes encrypt/decrypt process is symmetric.) The IV is another matter, and it could be a few things. Perhaps it's one of the keys hard-coded into iTunes, or into the devices themselves. Although Apple's comment above suggests the key is present on the device's keychain, I think this isn't that important. One can restore an encrypted backup to a different device, which suggests all information relevant to the decryption is present in the backup and iTunes configuration, and that anything solely on the device is irrelevant and replacable in this context. So where might be the key be? I've listed paths below from a Windows machine but it's much of a muchness whichever OS we use. The "\appdata\Roaming\Apple Computer\iTunes\itunesprefs.xml" contains a PList with a "Keychain" dict entry in it. The "\programdata\apple\Lockdown\09037027da8f4bdefdea97d706703ca034c88bab.plist" contains a PList with "DeviceCertificate", "HostCertificate", and "RootCertificate", all of which appear to be valid X509 certs. The same file also appears to contain asymmetric keys "RootPrivateKey" and "HostPrivateKey" (my reading suggests these might be PKCS #7-enveloped). Also, within each backup there are "AuthSignature" and "AuthData" values in the Manifest.plist file, although these appear to be rotated as each file gets incrementally backed up, suggested they're not that useful as a key, unless something really quite involved is being done. There's a lot of misleading stuff out there suggesting getting data from encrypted backups is easy. It's not, and to my knowledge it hasn't been done. Bypassing or disabling the backup encryption is another matter entirely, and is not what I'm looking to do. This isn't about hacking apart the iPhone or anything like that. All I'm after here is a means to extract data (photos, contacts, etc.) from encrypted iTunes backups as I can unencrypted ones. I've tried all sorts of permutations with the information I've put down above but got nowhere. I'd appreciate any thoughts or techniques I might have missed.

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• Oracle Enterprise Manager 12c Configuration Best Practices (Part 3 of 3)

  - by Bethany Lapaglia

  <span id="XinhaEditingPostion"></span>&amp;lt;span id=&amp;quot;XinhaEditingPostion&amp;quot;&amp;gt;&amp;lt;/span&amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;span id=&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;XinhaEditingPostion&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;/span&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt; This is part 3 of a three-part blog series that summarizes the most commonly implemented configuration changes to improve performance and operation of a large Enterprise Manager 12c environment. A “large” environment is categorized by the number of agents, targets and users. See the Oracle Enterprise Manager Cloud Control Advanced Installation and Configuration Guide chapter on Sizing for more details on sizing your environment properly. Part 1 of this series covered recommended configuration changes for the OMS and Repository Part 2 covered recommended changes for the Weblogic server Part 3 covers general configuration recommendations and a few known issues The entire series can be found in the My Oracle Support note titled Oracle Enterprise Manager 12c Configuration Best Practices [1553342.1]. Configuration Recommendations Configure E-Mail Notifications for EM related Alerts In some environments, the notifications for events for different target types may be sent to different support teams (i.e. notifications on host targets may be sent to a platform support team). However, the EM application administrators should be well informed of any alerts or problems seen on the EM infrastructure components. Recommendation: Create a new Incident rule for monitoring all EM components and setup the notifications to be sent to the EM administrator(s). The notification methods available can create or update an incident, send an email or forward to an event connector. To setup the incident rule set follow the steps below. Note that each individual rule in the rule set can have different actions configured. 1.  To create an incident rule for monitoring the EM components, click on Setup / Incidents / Incident Rules. On the All Enterprise Rules page, click on the out-of-box rule called “Incident management Ruleset for all targets” and then click on the Actions drop down list and select “Create Like Rule Set…” 2. For the rule set name, enter a name such as MTM Ruleset. Under the Targets tab, select “All targets of types” and select “OMS and Repository” from the drop down list. This target type contains all of the key EM components (OMS servers, repository, domains, etc.) 3. Click on the Rules tab. To edit a rule, click on the rule name and click on Edit as seen below 4. Modify the following rules: a. Incident creation Rule for metric alerts i. Leave the Type set as is but change the Severity to add Warning by clicking on the drop down list and selecting “Warning”. Click Next. ii.  Add or modify the actions as required (i.e. add email notifications). Click Continue and then click Next. iii. Leave the Name and description the same and click Next. iv. Click Continue on the Review page. b. Incident creation Rule for target unreachable. i.   Leave the Type set as is but change the Target type to add OMS and Repository by clicking on the drop down list selecting “OMS and Repository”. Click Next. ii.  Add or modify the actions as required (i.e. add email notifications) Click Continue and then click Next. iii. Leave the Name and description the same and click Next. iv. Click Continue on the Review page. 5.  Modify the actions for any other rule as required and be sure to click the “Save” push button to save the rule set or all changes will be lost. Configure Out-of-Band Notifications for EM Agent Out-of-Band notifications act as a backup when there’s a complete EM outage or a repository database issue. This is configured on the agent of the OMS server and can be used to send emails or execute another script that would create a trouble ticket. It will send notifications about the following issues: • Repository Database down • All OMS are down • Repository side collection job that is broken or has an invalid schedule • Notification job that is broken or has an invalid schedule Recommendation: To setup Out-of-Band Notifications, refer to the MOS note “How To Setup Out Of Bound Email Notification In 12c” (Doc ID 1472854.1) Modify the Performance Test for the EM Console Service The EM Console Service has an out-of-box defined performance test that will be run to determine the status of this service. The test issues a request via an HTTP method to a specific URL. By default, the HTTP method used for this test is a GET but for performance reasons, should be changed to HEAD. The URL used for this request is set to point to a specific OMS server by default. If a multi-OMS system has been implemented and the OMS servers are behind a load balancer, then the URL in this section must be modified to point to the load balancer name instead of a specific server name. If this is not done and a portion of the infrastructure is down then the EM Console Service will show down as this test will fail. Recommendation: Modify the HTTP Method for the EM Console Service test and the URL if required following the detailed steps below. 1.  To create an incident rule for monitoring the EM components, click on Targets / Services. From the list of services, click on the EM Console Service. 2. On the EM Console Service page, click on the Test Performance tab. 3.  At the bottom of the page, click on the Web Transaction test called EM Console Service Test 4.  Click on the Service Tests and Beacons breadcrumb near the top of the page. 5.  Under the Service Tests section, make sure the EM Console Service Test is selected and click on the Edit push button. 6.  Under the Transaction section, make sure the Access Logout page transaction is selected and click on the Edit push button 7) Under the Request section, change the HTTP Method from the default of GET to the recommended value of HEAD. The URL in this section must be modified to point to the load balancer name instead of a specific server name if multi-OMSes have been implemented. Check for Known Issues Job Purge Repository Job is Shown as Down This issue is caused after upgrading EM from 12c to 12cR2. On the Repository page under Setup ? Manage Cloud Control ? Repository, the job called “Job Purge” is shown as down and the Next Scheduled Run is blank. Also, repvfy reports that this is a missing DBMS_SCHEDULER job. Recommendation: In EM 12cR2, the apply_purge_policies have been moved from the MGMT_JOB_ENGINE package to the EM_JOB_PURGE package. To remove this error, execute the commands below: $ repvfy verify core -test 2 -fix To confirm that the issue resolved, execute $ repvfy verify core -test 2 It can also be verified by refreshing the Job Service page in EM and check the status of the job, it should now be Up. Configure the Listener Targets in EM with the Listener Password (where required) EM will report this error every time it is encountered in the listener log file. In a RAC environment, typically the grid home and rdbms homes are owned by different OS users. The listener always runs from the grid home. Only the listener process owner can query or change the listener properties. The listener uses a password to allow other OS users (ex. the agent user) to query the listener process for parameters. EM has a default listener target metric that will query these properties. If the agent is not permitted to do this, the TNS incident (TNS-1190) will be logged in the listener’s log file. This means that the listener targets in EM also need to have this password set. Not doing so will cause many TNS incidents (TNS-1190). Below is a sample of this error from the listener log file: Recommendation: Set a listener password and include it in the configuration of the listener targets in EM For steps on setting the listener passwords, see MOS notes: 260986.1 , 427422.1

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• C#, AES encryption check!

  - by Data-Base

  I have this code for AES encryption, can some one verify that this code is good and not wrong? it works fine, but I'm more concern about the implementation of the algorithm // Plaintext value to be encrypted. //Passphrase from which a pseudo-random password will be derived. //The derived password will be used to generate the encryption key. //Password can be any string. In this example we assume that this passphrase is an ASCII string. //Salt value used along with passphrase to generate password. //Salt can be any string. In this example we assume that salt is an ASCII string. //HashAlgorithm used to generate password. Allowed values are: "MD5" and "SHA1". //SHA1 hashes are a bit slower, but more secure than MD5 hashes. //PasswordIterations used to generate password. One or two iterations should be enough. //InitialVector (or IV). This value is required to encrypt the first block of plaintext data. //For RijndaelManaged class IV must be exactly 16 ASCII characters long. //KeySize. Allowed values are: 128, 192, and 256. //Longer keys are more secure than shorter keys. //Encrypted value formatted as a base64-encoded string. public static string Encrypt(string PlainText, string Password, string Salt, string HashAlgorithm, int PasswordIterations, string InitialVector, int KeySize) { byte[] InitialVectorBytes = Encoding.ASCII.GetBytes(InitialVector); byte[] SaltValueBytes = Encoding.ASCII.GetBytes(Salt); byte[] PlainTextBytes = Encoding.UTF8.GetBytes(PlainText); PasswordDeriveBytes DerivedPassword = new PasswordDeriveBytes(Password, SaltValueBytes, HashAlgorithm, PasswordIterations); byte[] KeyBytes = DerivedPassword.GetBytes(KeySize / 8); RijndaelManaged SymmetricKey = new RijndaelManaged(); SymmetricKey.Mode = CipherMode.CBC; ICryptoTransform Encryptor = SymmetricKey.CreateEncryptor(KeyBytes, InitialVectorBytes); MemoryStream MemStream = new MemoryStream(); CryptoStream CryptoStream = new CryptoStream(MemStream, Encryptor, CryptoStreamMode.Write); CryptoStream.Write(PlainTextBytes, 0, PlainTextBytes.Length); CryptoStream.FlushFinalBlock(); byte[] CipherTextBytes = MemStream.ToArray(); MemStream.Close(); CryptoStream.Close(); return Convert.ToBase64String(CipherTextBytes); } public static string Decrypt(string CipherText, string Password, string Salt, string HashAlgorithm, int PasswordIterations, string InitialVector, int KeySize) { byte[] InitialVectorBytes = Encoding.ASCII.GetBytes(InitialVector); byte[] SaltValueBytes = Encoding.ASCII.GetBytes(Salt); byte[] CipherTextBytes = Convert.FromBase64String(CipherText); PasswordDeriveBytes DerivedPassword = new PasswordDeriveBytes(Password, SaltValueBytes, HashAlgorithm, PasswordIterations); byte[] KeyBytes = DerivedPassword.GetBytes(KeySize / 8); RijndaelManaged SymmetricKey = new RijndaelManaged(); SymmetricKey.Mode = CipherMode.CBC; ICryptoTransform Decryptor = SymmetricKey.CreateDecryptor(KeyBytes, InitialVectorBytes); MemoryStream MemStream = new MemoryStream(CipherTextBytes); CryptoStream cryptoStream = new CryptoStream(MemStream, Decryptor, CryptoStreamMode.Read); byte[] PlainTextBytes = new byte[CipherTextBytes.Length]; int ByteCount = cryptoStream.Read(PlainTextBytes, 0, PlainTextBytes.Length); MemStream.Close(); cryptoStream.Close(); return Encoding.UTF8.GetString(PlainTextBytes, 0, ByteCount); } Thank you

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• links for 2010-12-17

  - by Bob Rhubart

  Overview of Oracle Enterprise Manager Management Packs How does Oracle Enterprise Manager Grid Control do so much across so many different systems? Porus Homi Havewala has the answers.  (tags: oracle otn grid soa entarch) How to overcome cloud computing hurdles - Computerworld What does it take to go from 'we should move to the cloud' to a successful cloud computing strategy? This excerpt from Silver Clouds, Dark Linings offers advice on crossing cloud chasms and developing a successful roadmap. (tags: ping.fm) Security in OBIEE 11g, Part 2 Guest blogger Pravin Janardanam continues the discussion about OBIEE 11g Authorization and other Security aspects. (tags: oracle otn security businessintelligence obiee) Oracle Fusion Middleware Security: A Quick Note about Oracle Access Manager 11g and WebLogic "OAM 11g integrates with WebLogic using the very same components used to integrate OAM 10.1.4.3. Under most circumstances, that means using the OAM Identity Asserter...which asserts the OAM_REMOTE_USER header as the user principal in the JAAS subject." - Brian Eidelman (tags: WebLogic oracle) Comparison Between Cluster Multicast Messaging and Unicast Messaging Mode Weblogic wonders!!! "When servers are in a cluster, these member servers communicate with each other by sending heartbeats and indicating that they are alive. For this communication between the servers, either unicast or multicast messaging is used." -- Divya Duryea (tags: weblogic oracle) Ron Batra: Cloud Computing Series: IV: Database.com, ExaData on Demand and connecting the dots Oracle ACE Direct Ron Batra offers his assessment of recent rumblings in the Cloud. (tags: oracle otn oracleace cloud database)

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• Boot failure randomly. Can someone help?

  - by desgua

  I often get stuck at the boot on battery. I can suspend and hibernate without any trouble (even on battery). If I plug the energy cable everything goes right most of the time (edited June 13). Adding "acpi=off" doesn't solve the issue. Disabling power save from LAN at BIOS doesn't solve this too. Memory test seems to be ok: I can even compile a kernel without a problem: Has someone a tip for this? (I have the same questions marks in my mind as the image shows if not more :-/ ) obs.: this is an upgraded installation from Natty alpha. edited I (May 22): I've installed a brand new final 11.04 and got the bug again. edited II (June 13): I thought it was solved but it is not. After spending eight days off, the same problem happened even with the power cable connected. I had to reboot about 6 times until success. edited III (June 14): I can boot (even with battery) if I disconnect the cable and take off the battery for a few seconds. This lead me to conclude that maybe something is kept into memory of some hardware. Maybe or maybe not related but I also have touchpad issues (jumps) with this machine. edited IV (June 25): I opened gconf-editor and went to apps gnome-power-manager and disabled everything possibly related to suspend or hibernate. No help. Also I grabbed a Fedora live usb pendrive and got the same problem: So I think it is a hardware problem related issue.

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• Create device receive SMS parse to text ( SMS Gateway )

  - by Chris Okyen

  I want to use a server as a device to run a script to parse a SMS text in the following way. I. The person types in a specific and special cell phone number (Similar to Facebook’s 32556 number used to post on your wall) II. The user types a text message. III. The user sends the text message. IV. The message is sent to some kind of Device (the server) or SMS Gateway and receives it. V. The thing described above that the message is sent to then parse the test message. I understand that these three question will mix Programming and Server Stuff and could reside here or at DBA.SE How would I make such a cell phone number (described in step I) that would be sent to the Device? How do I create the device that then would receive it? Finally, how do I Parse the text message? I don't want to pay for cloud space, server scripting stuff or server space; I want to just use a free webserver to do this totally free - meaning I will have to do more on my own... My question can be seen in more depth in this visual flowchart

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• Effect of using dedicated NVidia card instead of Intel HD4000

  - by Sman789

  Short version: Can someone please advise me of the effect of adding a dedicated NVIDIA GeForce GT 630M card to an Ubuntu laptop in terms of power consumption and performance gains/losses when doing general productivity tasks and booting up. Also, how good are the closed source, open source, and Bumblebee drivers for these newer cards compared to support for the Intel HD4000? Long version/Background, if any info here is helpful: I'm thinking of ordering a laptop from PC Specialist (a UK company who actually sell machines without Windows pre-installed) with the following specifications: Genesis IV: 15.6" AUO Matte 95% Gamut LED Widescreen (1920x1080) Intel® Core™i5 Dual Core Mobile Processor i5-3210M (2.50GHz) 3MB 4GB SAMSUNG 1600MHz SODIMM DDR3 MEMORY (1 x 4GB) 120GB INTEL® 520 SERIES SSD, SATA 6 Gb/s (upto 550MB/sR | 520MB/sW) Intel 2 Channel High Definition Audio + MIC/Headphone Jack GIGABIT LAN & WIRELESS INTEL® N135 802.11N (150Mbps) + BLUETOOTH Now, as I want this laptop mainly for work and not for games, I would be more than content with the HD4000 integrated chip which comes with the processor. However, for compatibility reasons, I am not able to get the specs I want unless I choose a NVIDIA GeForce GT 630M 1GB graphics card, which I don't have a great deal of use for. I'm willing to buy it, however, as it's still cheaper than any other laptop with the specs I want. However, I know that Linux power management isn't fantastic with open-source graphics drivers, and I don't much about Bumblebee. Basically, whilst I'm happy to 'tolerate' the card being there, I don't want to experience any negative effects on the rest of my system (battery, performance etc) and if there are likely to be any, I might reconsider my purchase. So if anyone can advise me on the effects, I would be very grateful, since I doubt I can just turn the card off. Thankyou for any assistance :)

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• Application shows low memory warning and crashes while loading images?

  - by Bhoomi

  I am using following code for loading images from server using following code.When i scroll UITableView application crashes. AsynchrohousImageView class .m file - (void)dealloc { [connection cancel]; //in case the URL is still downloading [connection release]; [data release]; [_imageView release]; [_activityIndicator release]; [super dealloc]; } - (void)loadImageFromURL:(NSURL*)url defaultImageName:(NSString *)defaultImageName showDefaultImage:(BOOL)defaultImageIsShown showActivityIndicator:(BOOL)activityIndicatorIsShown activityIndicatorRect:(CGRect)activityIndicatorRect activityIndicatorStyle:(UIActivityIndicatorViewStyle)activityIndicatorStyle { if (connection!=nil) { [connection release]; } if (data!=nil) { [data release]; } if ([[self subviews] count]>0) { [[[self subviews] objectAtIndex:0] removeFromSuperview]; // } if (defaultImageIsShown) { self.imageView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:defaultImageName]] autorelease]; } else { self.imageView = [[[UIImageView alloc] init] autorelease]; } [self addSubview:_imageView]; _imageView.frame = self.bounds; [_imageView setNeedsLayout]; [self setNeedsLayout]; if (activityIndicatorIsShown) { self.activityIndicator = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:activityIndicatorStyle] autorelease]; [self addSubview:_activityIndicator]; _activityIndicator.frame = activityIndicatorRect; _activityIndicator.center = CGPointMake(_imageView.frame.size.width/2, _imageView.frame.size.height/2); [_activityIndicator setHidesWhenStopped:YES]; [_activityIndicator startAnimating]; } NSURLRequest* request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; } - (void)connection:(NSURLConnection *)theConnection didReceiveData:(NSData *)incrementalData { if (data==nil) { data = [[NSMutableData alloc] initWithCapacity:2048]; } [data appendData:incrementalData]; } - (void)connectionDidFinishLoading:(NSURLConnection*)theConnection { [connection release]; connection=nil; _imageView.image = [UIImage imageWithData:data]; if (_activityIndicator) { [_activityIndicator stopAnimating]; } [data release]; data=nil; } - (UIImage*) image { UIImageView* iv = [[self subviews] objectAtIndex:0]; return [iv image]; } In ViewController Class Which loads image - (UITableViewCell *)tableView:(UITableView *)tV cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *reuseIdentifier =@"CellIdentifier"; ListCell *cell = (ListCell *)[tableView dequeueReusableCellWithIdentifier:reuseIdentifier]; if (cell==nil) { cell = [[ListCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier]; NSMutableDictionary *dicResult = [arrResults objectAtIndex:indexPath.row]; NSURL *url=[NSURL URLWithString:[dicResult objectForKey:@"Image"]]; AsynchronousImageView *asyncImageView = [[AsynchronousImageView alloc] initWithFrame:CGRectMake(5, 10,80,80)]; [asyncImageView loadImageFromURL:url defaultImageName:@"DefaultImage.png" showDefaultImage:NO showActivityIndicator:YES activityIndicatorRect:CGRectMake(5, 10,30,30) activityIndicatorStyle:UIActivityIndicatorViewStyleGray]; // load our image with URL asynchronously [cell.contentView addSubview:asyncImageView]; // cell.imgLocationView.image = [UIImage imageNamed:[dicResult valueForKey:@"Image"]]; [asyncImageView release]; } if([arrResults count]==1) { UITableViewCell *cell1=[tableView dequeueReusableCellWithIdentifier:reuseIdentifier]; if(cell1==nil) cell1=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier] autorelease]; NSMutableDictionary *dicResult = [arrResults objectAtIndex:0]; cell1.textLabel.text=[dicResult valueForKey:@"NoResults"]; return cell1; } else { NSMutableDictionary *dicResult = [arrResults objectAtIndex:indexPath.row]; NSString *title = [NSString stringWithFormat:@"%@ Bedrooms-%@", [dicResult valueForKey:KEY_NUMBER_OF_BEDROOMS],[dicResult valueForKey:KEY_PROPERTY_TYPE]]; NSString *strAddress = [dicResult valueForKey:KEY_DISPLAY_NAME]; NSString *address = [strAddress stringByReplacingOccurrencesOfString:@", " withString:@"\n"]; NSString *price = [dicResult valueForKey:KEY_PRICE]; NSString *distance = [dicResult valueForKey:KEY_DISTANCE]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.lblTitle.text = title; cell.lblAddress.text = address; if ([price length]>0) { cell.lblPrice.text = [NSString stringWithFormat:@"£%@",price]; }else{ cell.lblPrice.text = @""; } if ([distance length]>0) { cell.lblmiles.text = [NSString stringWithFormat:@"%.2f miles",[distance floatValue]]; }else{ cell.lblmiles.text = @""; } } return cell; } How can i resolve this? I have attached heapshot analysis screen shot of it.Here non Object consumes so much of memory what is that?

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• Web host recommendation [closed]

  - by birdus

  Possible Duplicate: How to find web hosting that meets my requirements? I'm researching a web host for a client and am looking for any recommendations of hosts you may have used and been happy with. Here are the requirements I've been given: The hosting service needs to either provide or allow us to add the following functionality: i. ASP/ASP.Net ii. video streaming iii. audio streaming iv. reporting v. RSS feeds vi. site search vii. forums viii. podcasts ix. Flash x. CMS: looking at using Percussion Software xi. PII registration xii. tie into SF.com (Sales Force) They also want to have a pre-prod server available so they can test the website before going public with it. This may just be a matter of paying extra for another site/server. Thanks for the help.

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• Creating deterministic key pairs in javascript for use in encrypting/decrypting/signing messages

  - by SlickTheNick

  So I have been searching everywhere and havn't been able to find anything with the sufficient information I need.. so Im a bit stumped on this one at the moment What I am trying to do is create a public/private key pair (like PGP) upon a users account creation, based on their passphrase and a random seed. The public key would be saved on the server, and ideally the private key would never be seen by the server whatsoever. The user could then sign in, and send a message to another user. Before the message is sent, the senders key pair would be re-generated on the fly based on their credentials (and maybe a password prompt) and used to encrypt the message. The receiver would then use their own re-generated private key to decrypt said message. The server itself should never see any plaintext passwords, private keys or readable messages. Bit unsure how on how I could go about implementing this. Iv been looking into PGP, specifically openPGP.js. The main trouble I am having is being able to regenerate the key-pair based off a specific seed. PGP seems to have a random output even if the inputs are the same. Storing the private key in a cookie or in HTML5 storage or something also isnt really an option, too unreliable. Can anyone point me in the right direction?

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• XML Outputting - PHP vs JS vs Anything Else?

  - by itsphil

  Hi everyone, I am working on developing a Travel website which uses XML API's to get the data. However i am relatively new to XML and outputting it. I have been experimenting with using PHP to output a test XML file, but currently the furthest iv got is to only output a few records. As it the questions states i need to know which technology will be best for this project. Below iv included some points to take into consideration. The website is going to be a large sized, heavy traffic site (expedia/lastminute size) My skillset is PHP (intermediate/high skilled) & Javascript (intermediate/high skilled) Below is an example of the XML that the API is outputting: <?xml version="1.0"?> <response method="###" success="Y"> <errors> </errors> <request> <auth password="test" username="test" /> <method action="###" sitename="###" /> </request> <results> <line id="6" logourl="###" name="Line 1" smalllogourl="###"> <ships> <ship id="16" name="Ship 1" /> <ship id="453" name="Ship 2" /> <ship id="468" name="Ship 3" /> <ship id="356" name="Ship 4" /> </ships> </line> <line id="63" logourl="###" name="Line 2" smalllogourl="###"> <ships> <ship id="492" name="Ship 1" /> <ship id="454" name="Ship 2" /> <ship id="455" name="Ship 3" /> <ship id="421" name="Ship 4" /> <ship id="401" name="Ship 5" /> <ship id="404" name="Ship 6" /> <ship id="405" name="Ship 7" /> <ship id="406" name="Ship 8" /> <ship id="407" name="Ship 9" /> <ship id="408" name="Ship 10" /> </ships> </line> <line id="41" logourl="###"> <ships> <ship id="229" name="Ship 1" /> <ship id="230" name="Ship 2" /> <ship id="231" name="Ship 3" /> <ship id="445" name="Ship 4" /> <ship id="570" name="Ship 5" /> <ship id="571" name="Ship 6" /> </ships> </line> </results> </response> If possible when suggesting which technlogy is best for this project, if you could provide some getting started guides or any information would be very much appreciated. Thank you for taking the time to read this.

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