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  • JumpStart your implementation with Oracle User Productivity Kit pre-built content!

    Project teams are faced with tight deadlines for enterprise application implementations or upgrades. Learn how organizations can reduce their time to deployment by using pre-built content for Oracle User Productivity Kit. When organizations use this content for baseline system transaction flows early in a project, they can then simply modify and update the content as the application evolves to create user acceptance test scripts, transaction recordings, job aids, classroom training, online training, and support materials post-go-live. The value of pre-built content dramatically reduces time to deployment and overall implementation costs.

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  • What methods of requirements elicitation are suitable when I do not have direct access to the user base?

    - by metadice
    I am working on an application to create invoices. There are some features that are required based on the type of the application and are common to all invoice applications. However, we still need to determine what unique needs the user base might have. We do not have direct access to the users to obtain requirements or user stories. What techniques are most suitable for eliciting high-quality requirements from users when direct or frequent access is not possible?

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  • The server principal '<domain>\User' already exists. But it doesn’t

    - by simonsabin
    Interesting little situation occurred today, the person I was working with was trying to add a login to a server and was getting the following error. “The server principal '<domain>\User' already exists” They were using a command like this and couldn’t figure out why they were getting the error above because when they looked at the logins setup on the system the login definitely didn’t exist. CREATE LOGIN [<domain>\<user>] FROM WINDOWS WITH DEFAULT_DATABASE = [master] The...(read more)

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  • saslauthd + PostFix producing password verification and authentication errors

    - by Aram Papazian
    So I'm trying to setup PostFix while using SASL (Cyrus variety preferred, I was using dovecot earlier but I'm switching from dovecot to courier so I want to use cyrus instead of dovecot) but I seem to be having issues. Here are the errors I'm receiving: ==> mail.log <== Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: SASL authentication failure: Password verification failed Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: ipname[xx.xx.xx.xx]: SASL PLAIN authentication failed: authentication failure ==> mail.info <== Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: SASL authentication failure: Password verification failed Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: ipname[xx.xx.xx.xx]: SASL PLAIN authentication failed: authentication failure ==> mail.warn <== Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: SASL authentication failure: Password verification failed Aug 10 05:11:49 crazyinsanoman postfix/smtpd[779]: warning: ipname[xx.xx.xx.xx]: SASL PLAIN authentication failed: authentication failure I tried $testsaslauthd -u xxxx -p xxxx 0: OK "Success." So I know that the password/user I'm using is correct. I'm thinking that most likely I have a setting wrong somewhere, but can't seem to find where. Here is my files. Here is my main.cf for postfix: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. myorigin = /etc/mailname # This is already done in /etc/mailname #myhostname = crazyinsanoman.xxxxx.com smtpd_banner = $myhostname ESMTP $mail_name #biff = no # appending .domain is the MUA's job. #append_dot_mydomain = no readme_directory = /usr/share/doc/postfix # TLS parameters smtpd_tls_cert_file = /etc/postfix/smtpd.cert smtpd_tls_key_file = /etc/postfix/smtpd.key smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # Relay smtp through another server or leave blank to do it yourself #relayhost = smtp.yourisp.com # Network details; Accept connections from anywhere, and only trust this machine mynetworks = 127.0.0.0/8 inet_interfaces = all #mynetworks_style = host #As we will be using virtual domains, these need to be empty local_recipient_maps = mydestination = # how long if undelivered before sending "delayed mail" warning update to sender delay_warning_time = 4h # will it be a permanent error or temporary unknown_local_recipient_reject_code = 450 # how long to keep message on queue before return as failed. # some have 3 days, I have 16 days as I am backup server for some people # whom go on holiday with their server switched off. maximal_queue_lifetime = 7d # max and min time in seconds between retries if connection failed minimal_backoff_time = 1000s maximal_backoff_time = 8000s # how long to wait when servers connect before receiving rest of data smtp_helo_timeout = 60s # how many address can be used in one message. # effective stopper to mass spammers, accidental copy in whole address list # but may restrict intentional mail shots. smtpd_recipient_limit = 16 # how many error before back off. smtpd_soft_error_limit = 3 # how many max errors before blocking it. smtpd_hard_error_limit = 12 # Requirements for the HELO statement smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit # Requirements for the sender details smtpd_sender_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit # Requirements for the connecting server smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org # Requirement for the recipient address smtpd_recipient_restrictions = reject_unauth_pipelining, permit_mynetworks, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, permit smtpd_data_restrictions = reject_unauth_pipelining # require proper helo at connections smtpd_helo_required = yes # waste spammers time before rejecting them smtpd_delay_reject = yes disable_vrfy_command = yes # not sure of the difference of the next two # but they are needed for local aliasing alias_maps = hash:/etc/postfix/aliases alias_database = hash:/etc/postfix/aliases # this specifies where the virtual mailbox folders will be located virtual_mailbox_base = /var/spool/mail/vmail # this is for the mailbox location for each user virtual_mailbox_maps = mysql:/etc/postfix/mysql_mailbox.cf # and this is for aliases virtual_alias_maps = mysql:/etc/postfix/mysql_alias.cf # and this is for domain lookups virtual_mailbox_domains = mysql:/etc/postfix/mysql_domains.cf # this is how to connect to the domains (all virtual, but the option is there) # not used yet # transport_maps = mysql:/etc/postfix/mysql_transport.cf # Setup the uid/gid of the owner of the mail files - static:5000 allows virtual ones virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 inet_protocols=all # Cyrus SASL Support smtpd_sasl_path = smtpd smtpd_sasl_local_domain = xxxxx.com ####################### ## OLD CONFIGURATION ## ####################### #myorigin = /etc/mailname #mydestination = crazyinsanoman.xxxxx.com, localhost, localhost.localdomain #mailbox_size_limit = 0 #recipient_delimiter = + #html_directory = /usr/share/doc/postfix/html message_size_limit = 30720000 #virtual_alias_domains = ##virtual_alias_maps = hash:/etc/postfix/virtual #virtual_mailbox_base = /home/vmail ##luser_relay = webmaster #smtpd_sasl_type = dovecot #smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes #smtpd_sasl_authenticated_header = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination #virtual_create_maildirsize = yes #virtual_maildir_extended = yes #proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps #virtual_transport = dovecot #dovecot_destination_recipient_limit = 1 Here is my master.cf: # # Postfix master process configuration file. For details on the format # of the file, see the master(5) manual page (command: "man 5 master"). # # Do not forget to execute "postfix reload" after editing this file. # # ========================================================================== # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # ========================================================================== smtp inet n - - - - smtpd submission inet n - - - - smtpd -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #smtps inet n - - - - smtpd # -o smtpd_tls_wrappermode=yes # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #628 inet n - - - - qmqpd pickup fifo n - - 60 1 pickup cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - - 300 1 oqmgr tlsmgr unix - - - 1000? 1 tlsmgr rewrite unix - - - - - trivial-rewrite bounce unix - - - - 0 bounce defer unix - - - - 0 bounce trace unix - - - - 0 bounce verify unix - - - - 1 verify flush unix n - - 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - - - - smtp # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - - - - smtp -o smtp_fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - - - - showq error unix - - - - - error retry unix - - - - - error discard unix - - - - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - - - - lmtp anvil unix - - - - 1 anvil scache unix - - - - 1 scache # # ==================================================================== # Interfaces to non-Postfix software. Be sure to examine the manual # pages of the non-Postfix software to find out what options it wants. # # Many of the following services use the Postfix pipe(8) delivery # agent. See the pipe(8) man page for information about ${recipient} # and other message envelope options. # ==================================================================== # # maildrop. See the Postfix MAILDROP_README file for details. # Also specify in main.cf: maildrop_destination_recipient_limit=1 # maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient} # # ==================================================================== # # Recent Cyrus versions can use the existing "lmtp" master.cf entry. # # Specify in cyrus.conf: # lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4 # # Specify in main.cf one or more of the following: # mailbox_transport = lmtp:inet:localhost # virtual_transport = lmtp:inet:localhost # # ==================================================================== # # Cyrus 2.1.5 (Amos Gouaux) # Also specify in main.cf: cyrus_destination_recipient_limit=1 # cyrus unix - n n - - pipe user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user} # # ==================================================================== # Old example of delivery via Cyrus. # #old-cyrus unix - n n - - pipe # flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user} # # ==================================================================== # # See the Postfix UUCP_README file for configuration details. # uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) # # Other external delivery methods. # ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) bsmtp unix - n n - - pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient scalemail-backend unix - n n - 2 pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension} mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user} #dovecot unix - n n - - pipe # flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -d ${recipient} Here is what I'm using for /etc/postfix/sasl/smtpd.conf log_level: 7 pwcheck_method: saslauthd pwcheck_method: auxprop mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5 allow_plaintext: true auxprop_plugin: mysql sql_hostnames: 127.0.0.1 sql_user: xxxxx sql_passwd: xxxxx sql_database: maildb sql_select: select crypt from users where id = '%u' As you can see I'm trying to use mysql as my authentication method. The password in 'users' is set through the 'ENCRYPT()' function. I also followed the methods found in http://www.jimmy.co.at/weblog/?p=52 in order to redo /var/spool/postfix/var/run/saslauthd as that seems to be a lot of people's problems, but that didn't help at all. Also, here is my /etc/default/saslauthd START=yes DESC="SASL Authentication Daemon" NAME="saslauthd" # Which authentication mechanisms should saslauthd use? (default: pam) # # Available options in this Debian package: # getpwent -- use the getpwent() library function # kerberos5 -- use Kerberos 5 # pam -- use PAM # rimap -- use a remote IMAP server # shadow -- use the local shadow password file # sasldb -- use the local sasldb database file # ldap -- use LDAP (configuration is in /etc/saslauthd.conf) # # Only one option may be used at a time. See the saslauthd man page # for more information. # # Example: MECHANISMS="pam" MECHANISMS="pam" MECH_OPTIONS="" THREADS=5 OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r" I had heard that potentially changing MECHANISM to MECHANISMS="mysql" but obviously that didn't help as is shown by the options listed above and also by trying it out anyway in case the documentation was outdated. So, I'm now at a loss... I have no idea where to go from here or what steps I need to do to get this working =/ Anyone have any ideas? EDIT: Here is the error that is coming from auth.log ... I don't know if this will help at all, but here you go: Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql auxprop plugin using mysql engine Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: begin transaction Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin create statement from userPassword user xxxxxx.com Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin doing query select crypt from users where id = '[email protected]'; Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin create statement from cmusaslsecretPLAIN user xxxxxx.com Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin doing query select crypt from users where id = '[email protected]'; Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: commit transaction Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1' Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: begin transaction Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin create statement from userPassword user xxxxxx.com Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin doing query select crypt from users where id = '[email protected]'; Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin create statement from cmusaslsecretPLAIN user xxxxxx.com Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin doing query select crypt from users where id = '[email protected]'; Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: commit transaction Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin Parse the username [email protected] Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin try and connect to a host Aug 11 17:19:56 crazyinsanoman postfix/smtpd[9503]: sql plugin trying to open db 'maildb' on host '127.0.0.1'

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  • Hundreds of unknown entries in Linux logwatch

    - by Saif Bechan
    I have a dedicated server which runs centos. Today i got an email from loginwatch on my server with hundreds of lines of 'errors'. I don't really know what they are becasue i am fairly new at this. The lines are in a few sections, I will display the first 10 of all of them, i hope someone can help me fix these problems. --------------------- Named Begin ------------------------ **Unmatched Entries** client 216.146.46.136 notify question section contains no SOA: 8 Time(s) client 92.114.98.10 query (cache) 'adobe.com/A/IN' denied: 4 Time(s) network unreachable resolving '11.254.75.75.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:13c7:7002:3000::11#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:13::c7d4:35#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:2e::1#53: 2 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::193#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::3#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:660:3006:1::1:1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:6b0:7::2#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:1:0:4777::140#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:2001:a:4608::59#53: 1 Time(s) network unreachable resolving '146.250.19.67.in-addr.arpa/PTR/IN': 2001:5a0:10::2#53: 1 Time(s) network unreachable resolving '149.207.106.87.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '178.62.24.195.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) this goes on for hundreds of lines with all different domain names. --------------------- pam_unix Begin ------------------------ Failed logins from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 111 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 113 times 121.14.145.32: 136 times 190.152.69.5: 248 times 209.160.72.15: 572 times 210.26.48.35: 2 times 212.235.111.224 (DSL212-235-111-224.bb.netvision.net.il): 140 times 218.206.25.29: 140 times Illegal users from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 2665 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 2539 times 121.14.145.32: 116 times 190.152.69.5: 34 times 209.160.72.15: 324 times 218.206.25.29: 8051 times proftpd: Unknown Entries: session opened for user cent_ftp by (uid=0): 15 Time(s) session closed for user cent_ftp: 14 Time(s) sshd: Authentication Failures: unknown (218.206.25.29): 8051 Time(s) unknown (78-86-126-211.zone2.bethere.co.uk): 2665 Time(s) unknown (93.97.176.136): 2539 Time(s) root (209.160.72.15): 558 Time(s) unknown (209.160.72.15): 324 Time(s) root (190.152.69.5): 246 Time(s) unknown (121.14.145.32): 116 Time(s) root (121.14.145.32): 106 Time(s) root (dsl212-235-111-224.bb.netvision.net.il): 70 Time(s) root (93.97.176.136): 44 Time(s) root (78-86-126-211.zone2.bethere.co.uk): 37 Time(s) unknown (190.152.69.5): 34 Time(s) mysql (121.14.145.32): 30 Time(s) nobody (218.206.25.29): 26 Time(s) mail (218.206.25.29): 24 Time(s) news (218.206.25.29): 24 Time(s) root (218.206.25.29): 24 Time(s) --------------------- SSHD Begin ------------------------ **Unmatched Entries** pam_succeed_if(sshd:auth): error retrieving information about user tavi : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pam : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user konchog : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user stavrum : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user rachel : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user affiliates : 24 time(s) pam_succeed_if(sshd:auth): error retrieving information about user nen : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cobra : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pass : 7 time(s) pam_succeed_if(sshd:auth): error retrieving information about user hacer : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user chung : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user zainee : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user radu : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user alka : 4 time(s) pam_succeed_if(sshd:auth): error retrieving information about user albert : 5 time(s) pam_succeed_if(sshd:auth): error retrieving information about user turcia : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cordell : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user silver : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user dragon : 3 time(s) If someone wants to see the whole log i can upload it somewhere. Am i being hacked, what is this all?? I hope someone can help me, this does not look good at all.

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  • Is there a way to add AD LDS users to an AD Domain Group or allow them domain security rights?

    - by Tom
    I have a web application in which our outside customers need access to run transactions (stored procs on Sql Server) on our domain. We have looked into LDS to keep these users separate from our domain. The problem we are having is allowing the LDS users the AD security rights to access these stored procs. For administration purposes we would like to use an AD group for each transaction (stored proc) which has access to execute. Is there a way to add LDS users to this AD group or allow them the security rights to do this? We have setup LDS and can authenicate an AD user thru to runs these transactions. LDS is running on Server 08 R2. AD is also Server 08 R2. Thanks.

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  • western digital caviar black. EXT4-fs error [migrated]

    - by azat
    Recently I update my HDD on desktop machine, and bought WD Caviar Black. But after I format & copy information to it (using dd), and fix partitions size: I have next errors in kern.log: Aug 27 16:04:35 home-spb kernel: [148265.326264] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 9054, 32254 clusters in bitmap, 32258 in gd Aug 27 16:07:11 home-spb kernel: [148421.493483] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 9045, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:17 home-spb kernel: [148546.481693] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 10299, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:17 home-spb kernel: [148546.487147] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.258711] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4345, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.277591] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.278202] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4344, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.284760] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.291983] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 9051, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.297495] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.297916] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 9050, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.297940] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.303213] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4425, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.312127] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.312487] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4424, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.317858] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.322231] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4336, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.326250] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.326599] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 4335, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.332397] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.341957] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 5764, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.350709] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:42 home-spb kernel: [148572.351127] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 5763, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:42 home-spb kernel: [148572.355916] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:43 home-spb kernel: [148572.401055] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 10063, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:43 home-spb kernel: [148572.404357] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:43 home-spb kernel: [148572.414699] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 10073, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:43 home-spb kernel: [148572.420411] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. Aug 27 16:09:43 home-spb kernel: [148572.493933] EXT4-fs error (device sdc2): ext4_mb_generate_buddy:739: group 9059, 32254 clusters in bitmap, 32258 in gd Aug 27 16:09:43 home-spb kernel: [148572.493956] JBD2: Spotted dirty metadata buffer (dev = sdc2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. One time, machine rebooted (not manually), when I turn it on, it runs fsck on /dev/sdc2 and fix some errors and some files are missing on /dev/sdc2 I'v check /dev/sdc2 for badblocks, it doesn't have it ( using e2fsck -c /dev/sdc2 ) Here is the output of fsck http://pastebin.com/D5LmLVBY What else I can do to understand what's wrong here? BTW for /dev/sdc1 no message like that, in kern.log Linux version: 3.3.0 Distributive: Debian wheezy

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  • Plesk file permissions - Apache/PHP conflicting with user accounts.

    - by hfidgen
    Hiya, I'm building a Drupal site which performs various automatic disk operations using the apache user (id=40). The problem is that the site was set up on a subdomain belonging to user ID 10001 (ie my main FTP account) so the filesystem belongs to that user ID. So I keep getting errors like this: warning: move_uploaded_file() [function.move-uploaded-file]: SAFE MODE Restriction in effect. The script whose uid is 10001 is not allowed to access /var/www/vhosts/domain.com/httpdocs/sites/default/files/images/user owned by uid 48 in /var/www/vhosts/domain.com/httpdocs/includes/file.inc on line 579. I've tried changing the apache group in httpd.conf to apache:psacln, psacln being the default group for all web users but that's not helped. The situation now is: ..../files/images/ = 777 and chown = ftplogin:psacln ..../files/images/user = 775 and chown = apache:psacln ..../files/tmp = 777 and chown = ftplogin:psacln So apparently uid 40 and 10001 both have permissions to write to any of the 3 directories involved, but still can't. Am i missing something here? Can anyone help? Thanks!

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  • How Can I Restrict VSFTPD to a Particular Local Group?

    - by Aaron Copley
    I'd like to control VSFTPD access by adding users to a group such that only members of the defined group can access the FTP services. I am thinking I can do this by modifying /etc/pam.d/vsftpd, but am not sure how to get started. Or is this only for virtual users in VSFTPD? I am aware of user_list and this does not seem to support groups. This doesn't provide the function I am looking for which is described above. If I am mistaken though this would be great. Thanks, Aaron

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  • Reuse remote ssh connections and reduce command/session logging verbosity?

    - by ewwhite
    I have a number of systems that rely on application-level mirroring to a secondary server. The secondary server pulls data by means of a series of remote SSH commands executed on the primary. The application is a bit of a black box, and I may not be able to make modifications to the scripts that are used. My issue is that the logging in /var/log/secure is absolutely flooded with requests from the service user, admin. These commands occur many times per second and have a corresponding impact on logs. They rely on passphrase-less key exchange. The OS involved is EL5 and EL6. Example below. Is there any way to reduce the amount of logging from these actions. (By user? By source?) Is there a cleaner way for the developers to perform these ssh executions without spawning so many sessions? Seems inefficient. Can I reuse the existing connections? Example log output: Jul 24 19:08:54 Cantaloupe sshd[46367]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:54 Cantaloupe sshd[46446]: Accepted publickey for admin from 172.30.27.32 port 33526 ssh2 Jul 24 19:08:54 Cantaloupe sshd[46446]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:54 Cantaloupe sshd[46446]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:54 Cantaloupe sshd[46475]: Accepted publickey for admin from 172.30.27.32 port 33527 ssh2 Jul 24 19:08:54 Cantaloupe sshd[46475]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:54 Cantaloupe sshd[46475]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:54 Cantaloupe sshd[46504]: Accepted publickey for admin from 172.30.27.32 port 33528 ssh2 Jul 24 19:08:54 Cantaloupe sshd[46504]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:54 Cantaloupe sshd[46504]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:54 Cantaloupe sshd[46583]: Accepted publickey for admin from 172.30.27.32 port 33529 ssh2 Jul 24 19:08:54 Cantaloupe sshd[46583]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:54 Cantaloupe sshd[46583]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:54 Cantaloupe sshd[46612]: Accepted publickey for admin from 172.30.27.32 port 33530 ssh2 Jul 24 19:08:54 Cantaloupe sshd[46612]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:54 Cantaloupe sshd[46612]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:55 Cantaloupe sshd[46641]: Accepted publickey for admin from 172.30.27.32 port 33531 ssh2 Jul 24 19:08:55 Cantaloupe sshd[46641]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:55 Cantaloupe sshd[46641]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:55 Cantaloupe sshd[46720]: Accepted publickey for admin from 172.30.27.32 port 33532 ssh2 Jul 24 19:08:55 Cantaloupe sshd[46720]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:55 Cantaloupe sshd[46720]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:55 Cantaloupe sshd[46749]: Accepted publickey for admin from 172.30.27.32 port 33533 ssh2 Jul 24 19:08:55 Cantaloupe sshd[46749]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:55 Cantaloupe sshd[46749]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:55 Cantaloupe sshd[46778]: Accepted publickey for admin from 172.30.27.32 port 33534 ssh2 Jul 24 19:08:55 Cantaloupe sshd[46778]: pam_unix(sshd:session): session opened for user admin by (uid=0) Jul 24 19:08:55 Cantaloupe sshd[46778]: pam_unix(sshd:session): session closed for user admin Jul 24 19:08:55 Cantaloupe sshd[46857]: Accepted publickey for admin from 172.30.27.32 port 33535 ssh2

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  • Apply Local Policy to Terminal Server (Windows Server 2008 R2 Standard - Workgroup )

    - by Param
    I have created 5 local user in Window server 2008 R2 std in workgroup. This server is also Terminal Server. Is it possible to apply local user Policy (gpedit.msc ) per user wise? I want to accomplish the following task 1) Restrict some control panel item as per user 2) Software Restriction as per user 3) Hide Administrative tools in control panel and start menu, only to user which has user rights 4) User must not be able to see other user data Thanks & Regards, Param

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  • bash/sed/awk/etc remove every other newline

    - by carillonator
    a bash commands outputs this: Runtime Name: vmhba2:C0:T3:L14 Group State: active Runtime Name: vmhba3:C0:T0:L14 Group State: active unoptimized Runtime Name: vmhba2:C0:T1:L14 Group State: active unoptimized Runtime Name: vmhba3:C0:T3:L14 Group State: active Runtime Name: vmhba2:C0:T2:L14 Group State: active I'd like to pipe it to something to make it look like this: Runtime Name: vmhba2:C0:T1:L14 Group State: active Runtime Name: vmhba3:C0:T3:L14 Group State: active unoptimized Runtime Name: vmhba2:C0:T2:L14 Group State: active [...] i.e. remove every other newline I tried ... |tr "\nGroup" " " but it removed all newlines and ate up some other letters as well. thanks

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  • How do I use long names to refer to Group Managed Service Accounts (gMSA)?

    - by Jason Stangroome
    Commonly domain user accounts are used as service accounts. With domain user accounts, the username can easily be as long as 64 characters as long as the User Principal Name (UPN) is used to refer to the account, eg [email protected]. If you still use the legacy pre-Windows 2000 names (SAM) you have to truncate it to ~20 characters, eg mydomain\truncname. When using the New-ADServiceAccount PowerShell cmdlet to create a new Group Managed Service Account (gMSA) and a name longer than 15 characters is specified, an error is returned. To specify a longer name, the SAM name must be specified separately, eg: New-ADServiceAccount -Name longname -SamAccountName truncname ... To configure a service to run as the new gMSA, I can use the legacy username format mydomain\truncname$ but using usernames with a maximum of 15 characters in 2013 is a smell. How do I refer to a gMSA using the UPN-style format instead? I tried the longname$@domainfqdn approach but that didn't work. It also seems that the gMSA object in AD doesn't have a userPrincipalName attribute value specified.

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  • Looking for a tagging media library application for Windows

    - by E3 Group
    I'm looking for a program that can: 1) index specific folders and capture video, music and picture files. 2) allow me to assign tags or categories to these files 3) allow me to search by tags or filenames I have a large collection of movies, music, etc that I want to categorise and tag with multiple tags. Haven't yet been able to find any applications that will do this for me.

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  • How do I launch a process as a specific user at startup on OS X?

    - by Scott Bonds
    I would like to run a script as a particular user on startup (not on login). I thought a launchd LaunchDaemon would do it, but 'man launchd' says: "If you wish your service to run as a certain user, in that user's environment, making it a launchd agent is the ONLY supported means of accomplishing this on Mac OS X. In other words, it is not sufficient to perform a setuid(2) to become a user in the truest sense on Mac OS X." They aren't kidding--when I try to run my script as a LaunchDaemon it doesn't work. In particular I'm trying to automate some keychain operations using the 'security' command, and it won't let me change the default keychain when I run the script through LaunchDaemon, though the script works fine when run using sudo from a shell. A LaunchAgent won't work, because the goal is for the proces to run without a user logging in and LaunchAgents only run when someone logs in. I looked at cron and the @reboot directive and that looks promising, but I read that cron is deprecated on OSX.

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  • AWS autoscaling. Launch Config/Auto Scaling Group and VPC instance with two ifaces

    - by icalvete
    I want create an Launch Config/Auto Scaling Group to build instances inside an VPC with two subnets ("frontend" and "backend") I need that this instances have two ifaces. One in "frontend" subnet and one in "backend" subnet. I can't see how do that. It's no posible from AWS console and neither with aws cli. http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-launch-configuration.html http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-auto-scaling-group.html Launch Config don't say nothing about this. http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/create-lc-with-instanceID.html Ideas? Thanks!!!

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  • where are user name and pasword saved in windows native vpn connection?

    - by Tîrêj
    I am using time freeze program but I can not save my free vpn user name and pasword. Since user name and pasword changed daily I have to unfreeze change pasword then freeze again. In the time freeze there is option to excusing file and folder. if I find the location of vpn setting that save the user name and pasword, I will have ability to use without unfreezing and re freezing. There is a location with path %userprofile%\AppData\Roaming\Microsoft\Network\Connections\Pbk\ that contain vpn configurations except user name and password. I need the location that store user name and password.

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  • Mac OS X multi-user thin client server (terminal server)?

    - by username
    Is there any solution out there to turn a Mac into a true multi-user thin client server? I'd like to set up a few cheap PCs with access to a couple accounts using something like VNC, but it isn't economical to buy a new server for each user or a new license for virtualized OS X Server for each user. I'm fully aware that OS X Server lets you set up users with "network home folders," and I know there's also VNC built into Mac OS X. Neither of these fit the bill (the former requires a thick client, and the latter is single-user only) UPDATE: yay, Lion! http://www.9to5mac.com/54102/10-7-lion-allows-multi-user-remote-computing

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  • Hello Operator, My Switch Is Bored

    - by Paul White
    This is a post for T-SQL Tuesday #43 hosted by my good friend Rob Farley. The topic this month is Plan Operators. I haven’t taken part in T-SQL Tuesday before, but I do like to write about execution plans, so this seemed like a good time to start. This post is in two parts. The first part is primarily an excuse to use a pretty bad play on words in the title of this blog post (if you’re too young to know what a telephone operator or a switchboard is, I hate you). The second part of the post looks at an invisible query plan operator (so to speak). 1. My Switch Is Bored Allow me to present the rare and interesting execution plan operator, Switch: Books Online has this to say about Switch: Following that description, I had a go at producing a Fast Forward Cursor plan that used the TOP operator, but had no luck. That may be due to my lack of skill with cursors, I’m not too sure. The only application of Switch in SQL Server 2012 that I am familiar with requires a local partitioned view: CREATE TABLE dbo.T1 (c1 int NOT NULL CHECK (c1 BETWEEN 00 AND 24)); CREATE TABLE dbo.T2 (c1 int NOT NULL CHECK (c1 BETWEEN 25 AND 49)); CREATE TABLE dbo.T3 (c1 int NOT NULL CHECK (c1 BETWEEN 50 AND 74)); CREATE TABLE dbo.T4 (c1 int NOT NULL CHECK (c1 BETWEEN 75 AND 99)); GO CREATE VIEW V1 AS SELECT c1 FROM dbo.T1 UNION ALL SELECT c1 FROM dbo.T2 UNION ALL SELECT c1 FROM dbo.T3 UNION ALL SELECT c1 FROM dbo.T4; Not only that, but it needs an updatable local partitioned view. We’ll need some primary keys to meet that requirement: ALTER TABLE dbo.T1 ADD CONSTRAINT PK_T1 PRIMARY KEY (c1);   ALTER TABLE dbo.T2 ADD CONSTRAINT PK_T2 PRIMARY KEY (c1);   ALTER TABLE dbo.T3 ADD CONSTRAINT PK_T3 PRIMARY KEY (c1);   ALTER TABLE dbo.T4 ADD CONSTRAINT PK_T4 PRIMARY KEY (c1); We also need an INSERT statement that references the view. Even more specifically, to see a Switch operator, we need to perform a single-row insert (multi-row inserts use a different plan shape): INSERT dbo.V1 (c1) VALUES (1); And now…the execution plan: The Constant Scan manufactures a single row with no columns. The Compute Scalar works out which partition of the view the new value should go in. The Assert checks that the computed partition number is not null (if it is, an error is returned). The Nested Loops Join executes exactly once, with the partition id as an outer reference (correlated parameter). The Switch operator checks the value of the parameter and executes the corresponding input only. If the partition id is 0, the uppermost Clustered Index Insert is executed, adding a row to table T1. If the partition id is 1, the next lower Clustered Index Insert is executed, adding a row to table T2…and so on. In case you were wondering, here’s a query and execution plan for a multi-row insert to the view: INSERT dbo.V1 (c1) VALUES (1), (2); Yuck! An Eager Table Spool and four Filters! I prefer the Switch plan. My guess is that almost all the old strategies that used a Switch operator have been replaced over time, using things like a regular Concatenation Union All combined with Start-Up Filters on its inputs. Other new (relative to the Switch operator) features like table partitioning have specific execution plan support that doesn’t need the Switch operator either. This feels like a bit of a shame, but perhaps it is just nostalgia on my part, it’s hard to know. Please do let me know if you encounter a query that can still use the Switch operator in 2012 – it must be very bored if this is the only possible modern usage! 2. Invisible Plan Operators The second part of this post uses an example based on a question Dave Ballantyne asked using the SQL Sentry Plan Explorer plan upload facility. If you haven’t tried that yet, make sure you’re on the latest version of the (free) Plan Explorer software, and then click the Post to SQLPerformance.com button. That will create a site question with the query plan attached (which can be anonymized if the plan contains sensitive information). Aaron Bertrand and I keep a close eye on questions there, so if you have ever wanted to ask a query plan question of either of us, that’s a good way to do it. The problem The issue I want to talk about revolves around a query issued against a calendar table. The script below creates a simplified version and adds 100 years of per-day information to it: USE tempdb; GO CREATE TABLE dbo.Calendar ( dt date NOT NULL, isWeekday bit NOT NULL, theYear smallint NOT NULL,   CONSTRAINT PK__dbo_Calendar_dt PRIMARY KEY CLUSTERED (dt) ); GO -- Monday is the first day of the week for me SET DATEFIRST 1;   -- Add 100 years of data INSERT dbo.Calendar WITH (TABLOCKX) (dt, isWeekday, theYear) SELECT CA.dt, isWeekday = CASE WHEN DATEPART(WEEKDAY, CA.dt) IN (6, 7) THEN 0 ELSE 1 END, theYear = YEAR(CA.dt) FROM Sandpit.dbo.Numbers AS N CROSS APPLY ( VALUES (DATEADD(DAY, N.n - 1, CONVERT(date, '01 Jan 2000', 113))) ) AS CA (dt) WHERE N.n BETWEEN 1 AND 36525; The following query counts the number of weekend days in 2013: SELECT Days = COUNT_BIG(*) FROM dbo.Calendar AS C WHERE theYear = 2013 AND isWeekday = 0; It returns the correct result (104) using the following execution plan: The query optimizer has managed to estimate the number of rows returned from the table exactly, based purely on the default statistics created separately on the two columns referenced in the query’s WHERE clause. (Well, almost exactly, the unrounded estimate is 104.289 rows.) There is already an invisible operator in this query plan – a Filter operator used to apply the WHERE clause predicates. We can see it by re-running the query with the enormously useful (but undocumented) trace flag 9130 enabled: Now we can see the full picture. The whole table is scanned, returning all 36,525 rows, before the Filter narrows that down to just the 104 we want. Without the trace flag, the Filter is incorporated in the Clustered Index Scan as a residual predicate. It is a little bit more efficient than using a separate operator, but residual predicates are still something you will want to avoid where possible. The estimates are still spot on though: Anyway, looking to improve the performance of this query, Dave added the following filtered index to the Calendar table: CREATE NONCLUSTERED INDEX Weekends ON dbo.Calendar(theYear) WHERE isWeekday = 0; The original query now produces a much more efficient plan: Unfortunately, the estimated number of rows produced by the seek is now wrong (365 instead of 104): What’s going on? The estimate was spot on before we added the index! Explanation You might want to grab a coffee for this bit. Using another trace flag or two (8606 and 8612) we can see that the cardinality estimates were exactly right initially: The highlighted information shows the initial cardinality estimates for the base table (36,525 rows), the result of applying the two relational selects in our WHERE clause (104 rows), and after performing the COUNT_BIG(*) group by aggregate (1 row). All of these are correct, but that was before cost-based optimization got involved :) Cost-based optimization When cost-based optimization starts up, the logical tree above is copied into a structure (the ‘memo’) that has one group per logical operation (roughly speaking). The logical read of the base table (LogOp_Get) ends up in group 7; the two predicates (LogOp_Select) end up in group 8 (with the details of the selections in subgroups 0-6). These two groups still have the correct cardinalities as trace flag 8608 output (initial memo contents) shows: During cost-based optimization, a rule called SelToIdxStrategy runs on group 8. It’s job is to match logical selections to indexable expressions (SARGs). It successfully matches the selections (theYear = 2013, is Weekday = 0) to the filtered index, and writes a new alternative into the memo structure. The new alternative is entered into group 8 as option 1 (option 0 was the original LogOp_Select): The new alternative is to do nothing (PhyOp_NOP = no operation), but to instead follow the new logical instructions listed below the NOP. The LogOp_GetIdx (full read of an index) goes into group 21, and the LogOp_SelectIdx (selection on an index) is placed in group 22, operating on the result of group 21. The definition of the comparison ‘the Year = 2013’ (ScaOp_Comp downwards) was already present in the memo starting at group 2, so no new memo groups are created for that. New Cardinality Estimates The new memo groups require two new cardinality estimates to be derived. First, LogOp_Idx (full read of the index) gets a predicted cardinality of 10,436. This number comes from the filtered index statistics: DBCC SHOW_STATISTICS (Calendar, Weekends) WITH STAT_HEADER; The second new cardinality derivation is for the LogOp_SelectIdx applying the predicate (theYear = 2013). To get a number for this, the cardinality estimator uses statistics for the column ‘theYear’, producing an estimate of 365 rows (there are 365 days in 2013!): DBCC SHOW_STATISTICS (Calendar, theYear) WITH HISTOGRAM; This is where the mistake happens. Cardinality estimation should have used the filtered index statistics here, to get an estimate of 104 rows: DBCC SHOW_STATISTICS (Calendar, Weekends) WITH HISTOGRAM; Unfortunately, the logic has lost sight of the link between the read of the filtered index (LogOp_GetIdx) in group 22, and the selection on that index (LogOp_SelectIdx) that it is deriving a cardinality estimate for, in group 21. The correct cardinality estimate (104 rows) is still present in the memo, attached to group 8, but that group now has a PhyOp_NOP implementation. Skipping over the rest of cost-based optimization (in a belated attempt at brevity) we can see the optimizer’s final output using trace flag 8607: This output shows the (incorrect, but understandable) 365 row estimate for the index range operation, and the correct 104 estimate still attached to its PhyOp_NOP. This tree still has to go through a few post-optimizer rewrites and ‘copy out’ from the memo structure into a tree suitable for the execution engine. One step in this process removes PhyOp_NOP, discarding its 104-row cardinality estimate as it does so. To finish this section on a more positive note, consider what happens if we add an OVER clause to the query aggregate. This isn’t intended to be a ‘fix’ of any sort, I just want to show you that the 104 estimate can survive and be used if later cardinality estimation needs it: SELECT Days = COUNT_BIG(*) OVER () FROM dbo.Calendar AS C WHERE theYear = 2013 AND isWeekday = 0; The estimated execution plan is: Note the 365 estimate at the Index Seek, but the 104 lives again at the Segment! We can imagine the lost predicate ‘isWeekday = 0’ as sitting between the seek and the segment in an invisible Filter operator that drops the estimate from 365 to 104. Even though the NOP group is removed after optimization (so we don’t see it in the execution plan) bear in mind that all cost-based choices were made with the 104-row memo group present, so although things look a bit odd, it shouldn’t affect the optimizer’s plan selection. I should also mention that we can work around the estimation issue by including the index’s filtering columns in the index key: CREATE NONCLUSTERED INDEX Weekends ON dbo.Calendar(theYear, isWeekday) WHERE isWeekday = 0 WITH (DROP_EXISTING = ON); There are some downsides to doing this, including that changes to the isWeekday column may now require Halloween Protection, but that is unlikely to be a big problem for a static calendar table ;)  With the updated index in place, the original query produces an execution plan with the correct cardinality estimation showing at the Index Seek: That’s all for today, remember to let me know about any Switch plans you come across on a modern instance of SQL Server! Finally, here are some other posts of mine that cover other plan operators: Segment and Sequence Project Common Subexpression Spools Why Plan Operators Run Backwards Row Goals and the Top Operator Hash Match Flow Distinct Top N Sort Index Spools and Page Splits Singleton and Range Seeks Bitmaps Hash Join Performance Compute Scalar © 2013 Paul White – All Rights Reserved Twitter: @SQL_Kiwi

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  • Fast Society Creates Mini and Mobile Temporary Social Networks

    - by ETC
    You’re out on the town or at a convention with a bunch of friends. How do you keep in touch with the entire group simultaneously? Fast Society offers a smartphone-based solution: a temporary social network for group talking, texting, and more. Fast Society was originally an iPhone only application and has recently updated to include and Android app too. The premise is simple: You set up a Fast Society group, link your friends into it, and for that night (or convention weekend) you’re all part of the same mini group. You can text the entire group, share pictures, set up sub-groups (let’s say that half your group is going to stay up late and party while half need to hit the rack to get up early for presentations, you can create a new group for the night owls to communicate), share your location, and send in-app and SMS messages to the entire group. Check out the video above to see it in action or hit up the link below to read more and grab a copy. Face Society [via Mashable] Latest Features How-To Geek ETC How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? Peaceful Alpine River on a Sunny Day [Wallpaper] Fast Society Creates Mini and Mobile Temporary Social Networks Page Zipper Unpacks Multi-Page Articles for Single-Page Display Minty Bug: Build an FM Bug Inside a Mint Container Get the MakeUseOf eBook Guide to Hacker Proofing Your PC Sync Your Windows Computer with Your Ubuntu One Account [Desktop Client]

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  • How should I track approval workflow when users at every security level can create a request?

    - by Eric Belair
    I am writing a new application that allows users to enter requests. Once a request is entered, it must follow an approval workflow to be finally approved by a user the highest security level. So, let's say a user at Security Level 1 enters a request. This request must be approved by his superior - a user at Security Level 2. Once the Security Level 2 user approves it, it must be approved by a user at Security Level 3. Once the Security Level 3 user approves it, it is considered fully approved. However, users at any of the three Security Levels can enter requests. So, if a Security Level 3 user enters a request, it is automatically considered "fully approved". And, if a Security Level 2 user enters a request, it must only be approved by a Security Level 3 user. I'm currently storing each approval status in a Database Log Table, like so: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 1 USER_SUBMIT 2012-09-01 00:00:00.000 2 1 APPROVED_LEVEL2 2012-09-01 01:00:00.000 3 1 APPROVED_LEVEL3 2012-09-01 02:00:00.000 4 2 USER_SUBMIT 2012-09-01 02:30:00.000 5 2 APPROVED_LEVEL2 2012-09-01 02:45:00.000 My question is, which is a better design: Record all three statuses for every request ...or... Record only the statuses needed according to the Security Level of the user submitting the request In Case 2, the data might look like this for two requests - one submitted by Security Level 2 User and another submitted by Security Level 3 user: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 3 APPROVED_LEVEL2 2012-09-01 01:00:00.000 2 3 APPROVED_LEVEL3 2012-09-01 02:00:00.000 3 4 APPROVED_LEVEL3 2012-09-01 02:00:00.000

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  • DB Object passing between classes singleton, static or other?

    - by Stephen
    So I'm designing a reporting system at work it's my first project written OOP and I'm stuck on the design choice for the DB class. Obviously I only want to create one instance of the DB class per-session/user and then pass it to each of the classes that need it. What I don't know it what's best practice for implementing this. Currently I have code like the following:- class db { private $user = 'USER'; private $pass = 'PASS'; private $tables = array( 'user','report', 'etc...'); function __construct(){ //SET UP CONNECTION AND TABLES } }; class report{ function __construct ($params = array(), $db, $user) { //Error checking/handling trimed //$db is the database object we created $this->db = $db; //$this->user is the user object for the logged in user $this->user = $user; $this->reportCreate(); } public function setPermission($permissionId = 1) { //Note the $this->db is this the best practise solution? $this->db->permission->find($permissionId) //Note the $this->user is this the best practise solution? $this->user->checkPermission(1) $data=array(); $this->db->reportpermission->insert($data) } };//end report I've been reading about using static classes and have just come across Singletons (though these appear to be passé already?) so what's current best practice for doing this?

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  • How do I send an email confirmation link to the user.

    - by adeel tahir
    I am developing a website where I need to send confirmation link to the user's e-mail account when he/she signs-up. When user clicks this link then a field userEnable in database changes from "false" to "true". How do I send a confirmation e-mail to a user when user clicks on the signup button. When user clicks on this confirmation link then how would the field UserEnable change from "false" to "true" I am using asp.net 4.0 with VB.NET as the language and SQL Server 2008 for my database.

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