SQL Server 2008 R2 (Pubs, Subs, and Other Replication Appetizers)

Transcription

1 SQL Server 2008 R2 (Pubs, Subs, and Other Replication Appetizers) Database Backup (Database Maintenance Plans) Database and Log Backups SQL Server 2008 R2 Installation Installation, Firewall Settings, etc. - Windows XP Firewall Settings - Windows 7 Firewall Settings - Sql Server Connection Configuration Creating Publications in Sql Server 2008 R2 Using the Wizard Creating Subscriptions in Sql Server 2008 R2 Using the Wizard - Windows XP Synchronization - Windows 7 Synchronization - Database Permissions / Synchronization Properties o Windows XP o Windows 7 Prepared by Kyle Joersz, North Dakota Industrial Commission For the RBDMS Annual Users and Training Conference April 2011 Much Thanks to the following for input and assistance: Rick Sims, Mississippi Oil and Gas Board Chuck Borcher, Nebraska Oil and Gas Conservation Commission

2 Maintenance Plans Database / Log Backup Whenever a database is created, this needs to be done. Don t forget. In Sql Server Management Studio-Management Rt-Click on Maintenance Plans-Maintenance Plan Wizard FYI, In Sql Server 2008 Express, Maintenance Plans can be created or deleted, but not edited. This must be done on your server version. Also I like to separate each database into it s own plan and also the system databases (master, distribution, etc.) together in one plan. Additionally, you will need to make a plan backing up the LOG file. This will be another separate plan, which you could put all of your non-system databases together or not. DON T FORGET TO MAKE A LOG BACKUP PLAN or your log file will GROW and take up the entire hard disk space, right Chuck and Kyle! Thanks Chuck for the suggestion to put this in this document. Database Backup Maintenance plan. Click Next

3 Name the Plan, Change the Schedule if desired, Click Next Select the desired tasks and click next. I found the below tasks as recommended somewhere on the internet, so it must be right! In the following order (also found recommended).. (move up or down)

4 Define Shrink Database Select your database Define ReOrganize Index Task Select your database Define Database Check Integrity Task Select your database

5 Define Back Up Database Task as desired. I believe in putting the backup files on a separate drive other than the default C: drive Sql is installed on. Select Report Options Click Finish.

6 Database Log Backup Maintenance plan Must schedule or your log file will grow and grow.. And set up similar to above schedule as often as desired (daily, hourly, etc).

7 SQL Server Express 2008 R2 Installation Must be Logged in as domain Administrator if on a Subscribers computer. For Windows XP, if Windows Installer 4.5 isn t installed, install the following: WindowsXP-KB v3-x86.exe. This updates the XP Windows Installer to 4.5. Install Sql Server Express 2008 R2: Windows XP - SQLEXPRADV_x86_ENU.exe Windows 7 - SQLEXPRADV_x64_ENU.exe Click on New installation or add features to an existing installation Accept the License terms Next (Feature Selection) Next (Installation Rules)

8 Server Configuration Set all Account Names to NT Authority/Network Service, no passwords, Startup Type all to Automatic except Full-text Daemon Launcher leave Manual Database Engine Configuration Mixed Mode (enter SA Password) Add ogd-ou-admin group from ndgov\ to Specify Sql Server administrators Next (Reporting Services Configuration) Next (Error Reporting)

9 Notes: Installation Errors Prior to completing installation, an inventory of projects will show and if any errors are listed, they should be remedied before continuing. For example, one of the steps listed involves Windows XP and Powershell 2.0. If this is listed as failed, you must install this, which at the time of this writing is in an Optional Windows Update. I was able to leave this on the step showing the failed steps and install this one window update and then go back to this installation because no restarts were required for the window update installation. Re-runing the installation steps should then work. We didn t see this problem in Windows 7, but didn t run as many installations on the OS. I didn t save a screen shot of this error, but it is similar to the one below with a direct reference to Powershell 2.0. AGAIN, IF YOU DON T REMEDY THE FAILED INSTALLATION RULES, MOST LIKELY THE SQL INSTANCE WILL NOT WORK PROPERLY. TRUST ME. And if you do proceed to install with the failures, YOU WILL NEED TO TOTALLY Un-Install the entire program through Add/Remove Programs and start again. If un-installing the entire Sql Server 2008 Express R2 is involved, YOU MUST also remove a couple of files manually after the un-install is done or it will error on Reporting Services during the installation. Leave it to Microsoft! This can done while leaving the installation program open where it is. Do the manual cleanup below and then return to it and click Re-Run. You will then have to remove the following files (they all may not exist) from the "C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA" directory: ReportServer.mdf ReportServer_log.LDF ReportServerTempDB.mdf ReportServerTempDB_log.LDF. Installation progresses to Completion - RESTART

10 Configure Sql Port Firewall Connections for Windows XP Install Windows XP Firewall exceptions (through Windows Firewall Exceptions Add Port, add each of the below ports, or to make it easier, we made a batch for this called SQL2008Express_FireWall.bat: (netsh firewall set portopening protocol = TCP port = 1433 name = SQLPort mode = ENABLE scope = ALL profile = CURRENT netsh firewall set portopening protocol = UDP port = 1434 name = SQLBrowserPort mode = ENABLE scope = ALL profile = CURRENT netsh firewall set portopening protocol = TCP port = 135 name = SQLWMIPort mode = ENABLE scope = ALL profile = CURRENT pause) The.bat file runs in Windows 7 and works but throws a couple of errors Manually: Notes since I didn t know what these were: WMI = Windows Management Instrumentation UDP = User Datagram Protocol Manual: Open Windows Firewall Exceptions Click Add Port Name: SqlPort PortNumber: 1433

11 Repeat for SqlBrowserPort UDP 1434 Report for SqlWMIPort TCP 135 Configure Sql Port Firewall Connections for Windows 7 Open Windows Firewall Advanced Settings Click on InBound Rules Click on New Rule Click Port

12 Select TCP and Specific Local Ports = 1433 Click Allow the Connection Select Domain (unselect Private and Public)

13 Name the Rule Repeat for UDP = 1434 as SqlBrowser Report for TCP = 135 as SqlWMIPort Configure Sql Server Manager Settings Log in as Administrator Open Sql Server Configuration Manager (Start-Programs-Microsoft Sql Server 2008 R2- Configuration Tools-Sql Server Configuration Manager) Sql Server Network Configuration o Protocols for SQLEXPRESS Named Pipes Enable TCP/IP Enable - Sql Server Services o SQL Server (SQLEXPRESS) set to Automatic Restart to apply the above o SQL Server Browser set to Automatic and start it. Make sure both the Sql Server (SqlExpress) and Sql Server Browser are set to Automatic Start mode and running. You will most likely need to either restart SQL Server (SQLEXPRESS) above (rt-click) or Restart the entire computer for the client protocols to be effective immediately. Verify a Remote connect to the instance through Sql Server Management Studio can be made.

14 Creating a Publication in Sql Server 2008 R2 Using the Wizard Connecting to the Server instance, rt-click-local Publications-New Publication

15 Select the database Select a publication type Select Subscriber Type If you are publishing to an older Sql Server such as 2000, you will only able to create the same type of publication that was created using the older version. In other words for us, only Merge publications. When we upgrade our web server to Sql Server 2008, we will switch the publications to strictly See Next screen shot!

16 Set Article (Table) properties and for all table articles to start with. We didn t want the User Triggers replicated so we set all table properties to this.

17 To cut down the number of conflicts that could be encountered, it may be desirable to change the Tracking level setting for all tables from the default of Row-level tracking to Column-level tracking. Row-level implies that if changes from two different users (one being a subscriber) change two different columns in the same row, a conflict will be generated. By changing this setting to Column-level, conflicts will only be generated if it on the exact same column for the record. (Thanks to Chuck (Nebraska) and Rick (Mississippi) for this information. Now for individual table properties: Select a table and select Set Properties of Highlighted Table Article

18 For ALL tables containing an Identity column. You should define the Publisher / Subscriber ranges. In some tables the default will work, but they should be reviewed. Adjust the Publisher and Subscriber Range sizes for all table columns that are IDENTITY. There can be only 1 Identity column per table. Range Sizes - Publisher Range Size Make this large enough to handle current record count PLUS room for enough future growth until the next time you break replication. For example there are approximately 94,000 rows in tblapd_workflow_history. I would set the Publisher range size to 2,000,000. The top limit is around 1 billion for identity columns of integer types so this shouldn t present a problem at all for this table. The default is 10,000. Every table must be evaluated separately and precisely. - Subscriber Range Size Make this one large enough to handle what a subscriber needs for inserting records BETWEEN synchronizations. For this particular table no subscribers insert into this table, so I would leave it at the default of We didn t realize the Publisher Range Size worked this way thinking that Publisher simply had a larger range given out during synchronization so we didn t make the range large enough for a handful of tables and thus we have gone over the Publisher Range Size with the current record count. What has happened seems to be the Publisher (server) now acts as a Subscriber as to the Range Size (1,000), and it doesn t update by itself when it gets above the threshold percentage, since it doesn t ever synchronize. Upon extensive research, and trial and error, 2 ways for the publisher to get its ranges reset once it reaches it top side. Either a Merge agent runs, or the user that is inserting the record is a dbo. Since the ranges are reviewed for each subscriber when they synchronize (via the merge agent running), they are all take care of. Since the merge agent doesn t run on the publisher side, this doesn t get reviewed automatically. So when someone connected directly to the server for this particular table (tblapd_workflow_history), when the 1,000 ranges maximum value is reached, the user will get the following error:

19 To open up the problem table, the user inserting on the server must either be a dbo, in which case the range will be updated or the following procedure must be run (Master table system stored procedure): sp_adjustpublisheridentityrange This will assign a new range to any table that is locked up. We have this scheduled to run every hour, but occasionally have to run it upon request. We also have determined that the threshold setting (default = 80%) doesn t seem to apply to the Publisher, so scheduling it doesn t seem to eliminate the error occuring. Other examples: tblleaseprodwell current record count = approx. 1,900,000. I would make the Publisher Range = 100,000,000 and the since no subscribers add records to this table Subscriber Range = 1,000 should do. tblfieldinsp current record count = approx. 350,000. This table is updated and inserted into primarily by the subscribers, but they are extremely good about synching regularly and would never enter more than 1000 between synches, but I would set the Subscriber Range at 2,000 or 5,000 just in case and the Publisher Range at 10,000,000. Click Next Click Next

20 Take out the Create Snapshot immediately if you want to control the location of the Snapshots. By default it is checked. You can modify the location path and then run the snapshot at that time. We will visit this shortly. You can modify the snapshot schedule now or wait until later. Click Next

21 The default for the snapshot agent is to run under the following windows account. We have this running as shown below, but you could enter in an account to run as. Click Next and Finish to create the Publication. We left this one for now. Click next and Enter a Name for the publication and click Finish.

22 Now review and adjust the location of the Snapshot. Rt-Click Properties on the Publication Click on Snapshot and if you want a different location than default RECOMMENDED, click on Put files in the following folder: and put the desired path in.

23 Although there are other things to be done in Properties, we will close this and run the snapshot and come back later to this. Rt-Click Properties on the Publication. Click Start to generate the snapshot. Close all Publication Properties windows. To adjust the snapshot schedule, Open Database name in Management Studio - rt-clickproperties on the job in Sql Server Agent - Jobs

24 Click on Schedules and then on Edit. Other settings are available in this including notifications, etc. Play as you have time. Adjust as desired. Close the job and all forms relating to it. Return to Publication Properties (Rt-Click-Properties on the Publication).

25 General Make sure you adjust the Subscriptions expire Interval. The default is 14 days. This means if a subscription hasn t synched in 14 days, it will expire and will have to be recreated. We change all of our subscriptions to 60 to cover any chance of lengthy absences or illnesses. Articles can be adjusted here in case you included something you didn t necessarily need. Filters can be created here if necessary. We previously visited Snapshot. Click on Publication Access List (very important)

26 If you use Windows synchronization for subscriptions, each of the user (or roles including the user) must be included here. Click Add. All users must also have access to the database the publication is for, so they need to be in Database-Security-Users. Click on Agent Security Security Settings. Adjust if desired. Close Publication Properties and all affiliated windows.

27 Creating Subscriptions in Sql Server 2008 R2 Using the Wizard Rt-Click on the Publication New Subscription Click Next Select the publication, and Click Next

28 We like to run pull subscriptions so select Run each agent at the Subscriber, Click Next Click Add Sql Server Subscriber and Connect to that instance.

29 Select the database (Select New database if doesn t exist yet). Click Next Click on the build button (.). You can change the Windows account the Merge Agent runs under or leave the default (below). Click OK

30 Click Next Click Next Click Next

31 Click Next Click Finish to create the Subscription Close Initialize the Subscription by logging onto the Subscriber as a Sql Server Administrator or a database dbo. We did this through Remote Desktop Connection for our Field office personnel. The logon must also be in the Publication Properties Publication Access List. Since there is no merge agent in Sql Server Express, Windows Synchronization is the vehicle to initialize and synchronize the subscription.

32 Windows XP Synchronization Start Windows Synchronization (Program Files Accessories Synchronize). Recommend desktop shortcut to Synchronize and put it in the All Users Desktop. Select the Subscription and click Synchronize. This could take a while, depending on the amount of data, especially if over the network.

33 Windows 7 Synchronization Start Windows Synchronization (Start-All Programs-Accessories-Sync Center) Rt-Click-Open Microsoft SQL Server 2008 to view subscriptions Rt-Click on Subscription to Start Synchronization

34 Database Permissions / Synchronization Properties Permissions for the user must be copied or entered into the sql server instance in order for the user to be able to synchronize using their login account. The permissions can be scripted from the server or entered manually. Add a sql synchronization account into the system. This must be entered in both instances databases (Server and Subscriber). The account MUST be a dbo on both instances. I have never been sold on giving a user any account with dbo permissions, but I haven t found any other way to synchronize seamlessly. The user will be required to enter the password twice every time they synchronize so make it simple. Open Windows Synchronization, Select the Subscription, and click on Properties (or double click on it). Windows XP Select the Subscriber Login tab Change to Use SQL Server Authentication and enter in the account and passwords. Click Apply and OK. From then on, the user will be prompted with this screen. Only the Login Name will be filled out. After they enter the passwords, the synchronization should run.

35 Rt-Click-Properties on the subscription Windows 7 Click on More Click on Subscriber Login and input the Administrative credentials. We are currently working on a VB application that will emulate the Windows Synchronization, use the currently logged on Windows account, but synchronize as (run as) an Administrative Sql Server account in the module. This way the end user will not have to enter the passwords. Also, something lost in Sql Server 2008 that was in 2000 was the Merge Agent. In 2000, the MA allowed for synchronization to be scheduled at the user s discretion. There is not MA in Express. We also are working on programming this VB app with a scheduling capability.