[Video] Office Hours 2018/4/4 with Special Guest Pinal Dave

This week, Pinal Dave joins Brent, Tara, and Richie to discuss replication latency, partitioning tables, transactional replication, troubleshooting 3-rd party application performance, SQL ConstantCare® update, SQL Server errors, copying data over from a database with read-only access, reducing blocking timeouts, backups to the cloud, and more replication questions!

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Office Hours – 4-4-18

 

How do you monitor replication latency?

Brent Ozar: Our first question comes in from [Tishal], [Tishal] says, “I was preparing a report using data collected from management data warehouse. I was using one of its tables, snapshots, performance counter values, and it has some columns in it formatted as floats.” He says, “How do you interpret the results of these columns for replication latency?” Tara, you’ve done a lot of replication work. When you want to find out how latent replication is, what do you use in order to do it?

Tara Kizer: I usually just open up replication monitor and then I insert a tracer token. Replication monitor will tell you what the replication is. It’s an estimation, but if you insert a tracer token, it will watch it flow from the publisher to the distributor. It will tell you what that latency is and the distributer and subscriber and what that latency is. So tracer token is a really good way. Some people, via code, they insert tracer tokens and then log that to a table and send out emails, but I figure what the script is to run to query it, but you could run an extended events session to see what replication monitor is doing to grab that latency number anyway and then monitor that via scripts instead of using the GUI.

Brent Ozar: Yeah, use your own scripts to inject a token whenever you want.

 

I run out of disk space when I create a clustered index.

Brent Ozar: Pablo says, “With a million row BI table, I’m trying to create a clustered index and I’m constantly running out of disk space. Will partitioning help?” Pinal, what do you think?

Pinal Dave: That’s a very interesting question. Actually, this reminds me of the time, years ago, when the disks were very, very expensive. I remember, I had experienced this one and I, even though there was no real reason, I had to partition my table. But the partitioning was actually just done just because of disk error. So yes, partitioning would help, but it makes sense that you create the second partition on a different drive. Same drive, you’re going to be walking into the same problem. Different drives – now you need to do a partitioning, partitioning functions as well as you need to go through the center and logic about which is the key and then you create this horizontal partitioning.

So yes, partitioning would help, but if this is not something you’re looking for, you may want to look at how you can get more space on a disk by changing the disk. Maybe a [longer run tact] would be easier, or any other thing like delete some stuff or move some of the database out of that partition. Or do something like that, that would be more meaningful instead of just doing partitioning for the sake of partitioning. And when you are creating the clustered index, the heart of your table – so that’s my opinion. So create partitioning if there is no option, otherwise, just do what works, actually. At the end of the day, your boss should say, you are able to manage your database.

Brent Ozar: That’s what I say to Richie all the time. Richie, you are able to manage your database. I was just, not even an hour ago, I was telling Richie, “Richie, I want to buy a bigger database server.” And he was like, nope.

Richie Rump: It’s not our problem, Brent. “But I want to. I want to try it.”

Brent Ozar: I want to throw money at it.

 

Is replication a good fit to copy data between servers?

Brent Ozar: J.D. asks, he wants to do – he says, “Is transactional replication the best way to copy data from a vendor app on server one to a different database on server two? It needs to be as close to real-time as possible. How should I move data between those?”

Tara Kizer: What is with all the replication questions?

Brent Ozar: It’s because you’re here, Tara.

Tara Kizer: I mean, best – I don’t know. Are you using Standard Edition, Enterprise Edition – because if I’m using Enterprise Edition, I’m not using transactional replication. I’m going to be using availability groups and, you know – it just depends what you’re trying to do here. All of the technologies have some latency, unless you’re doing synchronous through mirroring in availability groups.

Brent Ozar: He follows up with, he’s, “On Enterprise but it’s 2008R2.” It does say that they might upgrade to 2017 soon.

Tara Kizer: Yeah, so transactional replication is a good tool to copy your data to another server, but you have to be aware that there is going to be latency at times when big transactions run. Make sure your replication carpology is best practices. You’ve got a publisher on one server, a distributor on another server and your subscribers on another server. Don’t put the distributor on the publisher or subscriber.

I mean, you could, if you’ve got the hardware for it, but best practice is to separate these guys. And just know that it’s replicating inert, update and delete commands and updates get converted into a delete and an insert. So it’s at a very high level and so there can be some latency flowing through the pipeline, whereas mirroring and availability groups occur at a much lower level. But yeah, 2008 Enterprise Edition transactional replication is a good feature, it’s just I’ve spent so many hours troubleshooting it and, you know, waiting for a snapshot to run and waiting for initialization to happen. I mean, wow, a lot of hours.

Brent Ozar: If somebody offered you a new production DBA job and they said you can be a DBA but you have to work with replication fulltime, what would you say?

Tara Kizer: I don’t know – for me, taking another job, it depends upon benefits. I start there and a lot of times I don’t care how bad the job is if the benefits are good. But for me, am I going to be on call and have to work at three in the morning all the time – I don’t mind replication so much, you know. It was stable in my last environment and we didn’t have to do too much with it.

Pinal Dave: When it works, yes.

Tara Kizer: When it works, exactly, that’s the key…

Pinal Dave: So one thing I would just make a comment here is that you will find a lot of experts who can configure the replication, but the people who can just really troubleshoot the replication are, I think, there are only 1%. It’s not an easy task and, yes, configuring, click, click, click, go, done, fine, but how do you fix it?

Tara Kizer: And I’ve even opened up a case with Microsoft, many years ago, to – I was getting a weird replication error and I knew that the snapshot and that whole process was going to take several hours and so I was hoping to fix replication rather than go through that process. And the things that they had me do to replication is not something that you find blogs about. So, I had to open this case with them – and I don’t remember what the outcome was, if they fixed it or not because it was just way too many years ago. But it was just crazy, the queries I was running. And they’re like, grab this, grab that, look at this – it’s just like, how are you supposed to know how to do this stuff?

Brent Ozar: Richie, you look like there’s something you want to say in there too.

Richie Rump: I hate the Cubs.

Brent Ozar: Did they lose?

Richie Rump: They, like, haven’t scored a run in like two games, so. But that’s what I wanted to say, so…

Brent Ozar: You can always tell when baseball season starts with Richie. He’s very preoccupied – this is his one. Justin Setliff says, “Richie, don’t worry. It’s early.” It looked like a blue screen of death flag for a second there.

Richie Rump: And that’s what it feels like.

 

How do you prove other services are causing performance problems?

Brent Ozar: Nicholas asks, “Hi gang, how can you prove that other processes and services like Apache or internet information services on the same box are causing the SQL Server performance problems?”

Tara Kizer: I would never be able to prove it because I wouldn’t allow those on my SQL Server. So I mean, I need a production DBA here and I just – no, you’re not putting that stuff on my box.

Brent Ozar: And why not?

Tara Kizer: Because SQL Server is a memory hog, IS is a memory hog, I mean, they could be on the same box if you’re talking about a very, very small system, I guess. I mean, maybe in a test environment, but in production, I want to go by best practices and try to avoid having issues at three in the morning.

Pinal Dave: Right, and one of the things – yesterday, I was traveling through India and I was in Pune and my customer had an interesting scenario. They thought the reporting service is just fine and they have absolutely no issue and they put it on the same box as SQL Server. And I was like, okay, we just try to debug why they have a lot of I/O and we tried to start debugging with the various T-SQL scripts. And suddenly, the accidentally opened a task manager and we can see from the task manager’s view that reporting service is taking the maximum amount of the memory.

They were like, “I don’t know why, what was going on.” And we can see that it was taking 30% of their box’s memory and we were like, whoa. I mean, we didn’t even have to run any diagnostic script, the task manager was saying it. And as soon as we had just decided to turn it off and kill it and they had a little minor performance improvement; minor. And we believe, after they might have restarted, it would have worked. So once in a while, the layman’s, or not so smart, solution, like task manager, also tells a story. So we should definitely run all the fancier script, but do not ignore the task manager. That’s what I just told my customer yesterday and they thought, “Oh do you tell this to everybody?” I said, “All the time,” though even I said first time yesterday, yes.

Tara Kizer: I too use task manager. Sure, I know how to use other things also, but it’s so easy – right click, task manager, and there it is.

Brent Ozar: And everybody gets it, like, they understand, we’re not hiding something from you, it’s built into the system. Nicholas says about why he put things on multiple servers, he says, “Sometimes you inherit things.” Man, you’ve got to get better relatives so you don’t have such crappy inheritance.

 

Why are vendors telling me to replicate to the cloud?

Brent Ozar: Daryl says, “I got an email from a vendor yesterday telling me that I should replicate to the cloud. I thought last week that we were saying we should not do replication. I thought that Brent Ozar Unlimited was saying not do replication.” Well generally, if a vendor is telling you to do something, they’re usually also selling you a tool to do it at exactly the same time. So just think about that one.

Tara Kizer: What problem are they trying to solve here? Why are they saying to replicate to the cloud? What is the issue here? Is it disaster recovery? What is it?

Pinal Dave: I’ll just add a point there because I think I know a little bit of context of this because I have seen a similar email and I little bit read through it. I don’t know exactly situation of the Daryl, but I will just say it this way, I think Quest has a product, I think, and that product is trying to talk about hybrid replication, which is not native to the SQL Server and they say you can go to hybrid as well as heterogeneous environment. And at that time, Always On is not a solution, might be you may want to consider replication. So yes, replication is still true, but in replication not in terms of the SQL Server replication, replication in terms of taking your data and creating a replica of it at a different location. So maybe that’s what they are meaning. And the product might be able to solve the problem, as Brent clearly said.

Brent Ozar: And I’m a fan of putting data in the cloud, too. Like, if you want t reporting copy up there – because classically, a lot of our users are out in the cloud or they’re out somewhere else. And if your building’s internet connection goes down and they still want to be able to run their reports, replicating up to the cloud can make sense. You just want to make sure that you’re solving a problem that the business has.

Richie Rump: I just want to point out that Tara’s wearing a Quest sweatshirt.

Tara Kizer: Usually, my old camera would have been up to here. It’s just cold in my house and this is my favorite thing around the house.

Brent Ozar: I’m not going to lie, Quest has – the Quest velour kind of, whatever that thing is, that’s one of my favorite things that I keep over in the office as well. It’s so soft. If you ever get the chance to get, not a vendor t-shirt, because vendor t-shirts aren’t that good, but if a vendor gives you something nice like a hoodie, a sweatshirt, it’s going to be really nice. Same thing with the jackets – they give good stuff out.

Richie Rump: Yeah, I have an Azure hoodie that I got from the PDC where they announced Azure, when nobody could say Azure… I still have that and I wear it all the time.

Brent Ozar: Nicholas points out that when we were at Quest, we did shirts, Kevin Kline is Devine was one of the t-shirts and that was really good.

 

How can I fix performance in a third party app?

Brent Ozar: Pablo says, “I have this third-party application and it keeps creating lots of tables. And then, when we run reports, it does a bunch of union alls that take forever. What should I do to help this application’s performance?” Everybody has the same look…

Pinal Dave: Yeah, exactly. I just thought – I think they got us at one word, which is called third-party app. As soon as you say it, we just know what it is about. There are thousands of things we can talk about, union all is just the one thing which you can see probably. And there are so many things like indexes, statistics and hints they’re using inside the core. I’m sure there are so many views to support, so you can’t see what is written in the view, which you can just have to open it, encrypted stored procedure comes handy when you don’t want it – so many things, third-party app could have it, but I mean, this is the right place. I can tell you, there are three resources you can watch, I/O, memory and CPU. Those are the three going to be heavily consumed by this third-party app, no matter what you do. So whatever you can do at a database level, application level, without even touching the code, should be your priority when dealing with a third-party app because most of the third-party apps, as soon as you try to cut something, they somehow make sure they, for any other things that are not even related, they blame you for that.

Brent Ozar: True…

Pinal Dave: I mean, like, dropping an index and – yes, okay, can I tell a quick story before I let Brent and the team answer? Yesterday, I advised one organization who are using a product and I said why don’t you drop some of the indexes and just for trying, I said, let’s check all entire your code base and see if anywhere you are using that index hint, otherwise that would break. So they said sure. They went through the code base search. They couldn’t find that index and they decided to drop that index immediately. Then one of the major screen broke. They figured it out – they’re using now not even the index hint that way with the name of the index. They are using index hint with, like, the inter-parenthesis one, two, three, four, five. They are addressing the index not with the hint name, not index name. they are addressing them with the ID of the index, like four. So [crosstalk] you recreate that index, the fourth index would be something else. Think about what would be your performance. Third-party app can do anything.

Brent Ozar: That’s the worst hint I think I could imagine is specifying index hints by number because – say that somebody accidentally drops it, you don’t even know what it was. That’s terrible.

Tara Kizer: I’ve never even seen people do that. I didn’t even know that that was an option.

Pinal Dave: It’s an option and people practice it. And when I ask them and said why they do that, and their answer was beautiful, “Oh we come from a different RDBMS experience.”  I was like, well, saying you are from that Oracle or MySQL or Postgres does not make you any smarter.

Brent Ozar: And they were probably bad in that database platform too. It’s not an excuse. It’s like being caught with a pile of drugs and saying, “Oh I’m from France. It’s legal in France too.” It doesn’t make a difference.

 

How has the reception been for SQL ConstantCare?

Brent Ozar: Let’s see, Greg asks, “How’s the reception been for ConstantCare? I’m on day one and I love what I see so far.” Greg, it was funny to see you sign up too. I think we broke past 300 servers. I know we’re up past 100 users and I think we’re past 300 servers.

Richie Rump: Yep, something like that.

Brent Ozar: Yes, we’re up over 150TB of databases monitored. So it’s been a lot of fun. It’s been keeping me busier than a one-armed paper hanger trying to give advice to these people for servers, so it’s been pretty funny.

Pinal Dave: I have one question for you because it’s a V1. I have been reading myself – and this question is from me actually and I’m just inserting because I get the opportunity. Who writes all these things? I mean, it doesn’t look automated.

Tara Kizer: It was me.

Brent Ozar: We started with sp_Blitz. So sp_Blitz gives you all these warnings about your stuff. So I told Richie, here’s what we want to build and we’re going to take the rules from sp_Blitz, and that’s like all the input he had form me and he, like, boom, took off.

Pinal Dave: the VMware suggestion, it blew my mind. I didn’t know that. just reading that email about VMware, I learned something. I was like, oh, I think a couple of my customers in the past, I never talk about this. They might be facing this. They put complete trust in my and I didn’t know that part even. I just learned a second ago.

Brent Ozar: To me, I think that’s one of the markets too that we’re aiming for is consultants and independent freelancers because it’s so nice to have a second opinion. Just tell me what’s going on else that I might have missed. And so it’s really good to get this list of, you forgot about this one rare issue, you know, this one rare poison wait or whatever. So it’s been a lot of fun with that.

Richie Rump: [crosstalk] a blast doing all this stuff and I know he is because he gets quiet and I’m like, oh he’s just having too much fun over there.

Brent Ozar: And Richie can spell the customer emails that I send out too, like seeing out what the recommendations are. So he sees where I’m tweaking things from the system and how I go into details and it’s fun.

Pinal Dave: This is amazing because one other thing I’ll tell you – because one place you have mentioned about CUs, it was so nice to talk about CUs because I knew that one and I was so happy; a lot of people do not know. So if you install SQL Server 2016 SP1 right away, suddenly you will see your locks going crazy. Your locks are so many that you would be like, what happened? I didn’t change my code. Everything was fine in 2014. And as soon as you start updating the latest CU, suddenly all the locks will disappear and there was resource semaphore. And then, we just had to create one index and resource semaphore one, but if somebody would have not updated the CU, which the suggestion was, they don’t have ConstantCare. And I was like, I can clearly see if this guy has not done CU and four of the servers were on a default, he would be facing the locking scenario, crazy, thinking they have a bad code and that’s not the case. It’s just CU update you just have to do and your life is all good after that.

Brent Ozar: Yeah, and if you apply a bad CU, if you apply a CU that breaks things, I want to be able to tell people very quickly.

Pinal Dave: For sure, yes.

 

I’ve been getting database mail errors about spawning processes…

Brent Ozar: Let’s see, Mike asks, “I’ve been getting errors…” Oh my goodness, Mike says, “I’ve been seeing SQL Server fail to spawn a thread to process a new login in the middle of the night. Should I add logging schedulers?” he wants to start logging different DMVs, schedulers, workers, tasks, every five minutes. “What should I do? It’s a brand new server with only one database. It’s got two cores, 8GBs of RAM and SQL Server Enterprise Edition.”

Tara Kizer: Why is this server so small when you’re spending so much money on Enterprise Edition? That’s what I want to know right off the bat. 8GB of RAM? My new desktop has a lot more.

Brent Ozar: And the two cores thing is tricky too because the minimum core licensing for a VM is four cores. Now, if you’re licensing by the host, you can license the whole host and then start small, but two cores of Enterprise Edition is $14,000. I mean, it’s a big deal.

Tara Kizer: I’m not even familiar with that message. Is that a specific SQL Server message? Because that doesn’t – I’ve looked at a lot of error messages in the past 20 years or so; that’s not one of them I’m familiar with. I’m wondering if this is something, an application error, instead.

Brent Ozar: Ooh, Mike says, “It came from DBMail.” Wait, so now this really makes me suspicious of the number of messages you’re processing in terms of DBMail. That seems sketchy. We should probably ask around the question too. So my personal thought on DBMAIL is I don’t want it to email customers directly. It’s one of those things that I would use for administration type stuff, but I wouldn’t want to try to make an app server out of it. It’s okay, it just doesn’t scale that well. Mike says, “It sends to DBAs.” Yeah, that’s not so bad. So I could see that. I don’t know that I would start by logging DMVs though. I would start by looking at wait stats – look at wait stats overall and see what you’re looking at then.

Pinal Dave: Because there are only two CPUs, so when he says CPUs, I assume there are two processors, right, then he might be running out of the threads during the night due to maybe some other operations. It might be conflicting with your other maintenance jobs. Just possible, thinking, because you said midnight.

Brent Ozar: Yeah, so it was probably got 50 jobs all starting off at exactly midnight. I used to do that as a DBA. It’s the middle of the night – just set everything to midnight. Then you could see all the lights in the data center get dim right at exactly midnight…

Richie Rump: It’s like four o’clock for ConstantCare.

Pinal Dave: right, when somebody said midnight, that’s the only thing that comes to my mind because I don’t know why, when I was a beginner, 12PM was like the most holiest time to do pretty much everything; fire off the backup, fire up the index maintenance and let them run in a catch-22 situation.

Brent Ozar: the server is totally idle from like 10 PM to midnight. There’s nothing happening, and then it’s like [crosstalk] of football players go running into the thing at the same time.

Pinal Dave: Right exactly at midnight, and yes, and [they never finish]…

Tara Kizer: And just to give an extra hint, look for thread pool waits. And so what I would do, for cheap monitoring, just log WhoIsActive to a table every 30 seconds, every minute. You could do it all day long, like I’ve done in the past, but if you just want to monitor for this specific issue, log that and then look for thread pool waits. You should see, in the info column, I believe it is. Look for blocking, but it might not be blocking. It might just be running out of worker threads because you only have two CPUs.

Brent Ozar: I should also point out that if you search on Bing for sp_WhoIsActive log to table, you get some really pretty adds on the side there about side tables made of logs. Tara has a blog post on logging activity with sp_WhoIsActive there that’s really good.

 

I need to sync data from a read-only database…

Brent Ozar: Oh, let’s see. Next up, Steven says, “I only have read access to a database and I need to take the data out of that and sync it to another database that I have full control over. What way would you use to get that done?”

Tara Kizer: You’re very limited. SSIS probably – I mean, you only have read access, you can’t add triggers, you can’t do anything. So you’re going to need some kind of crosses.

Pinal Dave: Right, or just backup and restore and remove the read restriction. Just thinking loudly, even if that is possible.

Brent Ozar: And Richie used to do a lot of this kind of thing…

Richie Rump: Yeah, when he said sync, that’s the key word for me. It’s like, what does that mean? Does that mean you need to have – hey, I’ve got one source of truth here and I’ve got the other in the other database and I’ve got to merge them together. That is a lot more difficult than just saying, I have an ID here and I just need to see if it exists or not in the other one. So SSIS, I guess, if it’s the easy one. If you need to merge them together, you’re looking at a lot of work there. That’s not simple.

Brent Ozar: At least he said he only has read access to one of them, so it’s probably not that, thank goodness because that is terrible.

Richie Rump: Yeah, I mean, it said sync, you know. When I see sync, I don’t think – I’ve spoken to too many executives, so that’s my problem.

Brent Ozar: Well, and they always end up saying the same thing, “We just need to get this one row back to the other side. It’s just one row. How hard can it be?”

 

How can I reduce blocking between an insert and an update?

Brent Ozar: Naveen asks, “We have two processors running on SQL Server. One’s doing an update, one’s doing an insert. They both kick off at the same time and they’re getting blocked by each other. What should I do to reduce blocking timeouts?”

Tara Kizer: Who is the asker on this one? Read it again.

Brent Ozar: Naveen. And so for behind the scenes stuff for you all, we can all see the same panel of questions but so many of you pick out the questions, the reason why I read your name out, it’s not because I care about you, I don’t care about you at all, but I want the rest of my co-presenters to see which question we’re dealing with.

Richie Rump: But we’d love to mentor you…

Pinal Dave: The update statement is timing out. That means it’s not definite. I mean, it’s just locked on that select or when both of them started a process. One thing, if they’re deadlocking or just locking, and it says after 30 seconds of blocking. So is it an application thing? Maybe there is a timeout. If he just waits a little bit longer, it might be finished. I’m just thinking loudly. Like sometimes, you know, we give very short timeouts and things have to – and I tell everybody that locking is alright, it’s just all about waiting game. Once somebody finishes, the second person is going to get a turn, but deadlocking is bad, so that’s the reason that timing out it immediately. So when I see this one, I might just think that maybe you could change the timing, if possible, if you can do it. If that is not possible, see if one of the processes finishes first so you don’t have to wait for a 30-second timeout to kick in. and if, no matter what you do, if 30-second timeout is still kicking in, well, one of the processes is going to have to be finished one time or another time, then I think another one has to wait. So increase the timeout, and if all of them is not an option, then you just have to look at your company and see your database and see what blockers are there and take from WhoIsActive you can take it, or you can take it sp_Blitz – start seeing all the blockers and start removing one at a time.

Tara Kizer: I would just wonder, because the update statement is the one that’s timing out, so the insert one is the one that’s causing the blocking. Is this a single row insert? Investigate that process. Is it a very large query that’s getting inserted into a table? Investigate the insert and see if that can happen any faster or any indexes that can be added. If it’s just a singleton insert, you know, I doubt that that’s the culprit here.

Brent Ozar: Oh my god, he follows up with, “The insert’s doing 20,000 rows.”

Tara Kizer: Okay, well, I mean, you know, break that up if it can’t complete in 30 seconds. So look at your processes and do things differently. Is it a bulk insert? A bulk insert can be pretty fast. 20,000 rows isn’t any big deal for a bulk insert.

Pinal Dave: What Tara said is very, very true. One of the demonstrations is my favorite demonstrations, for pretty much all my presentations I open with it, where I just show them that how a lot of indexes can slow down your inserts and a lot of people even think it’s linear. So if you have one index, your system is taking three seconds to update. If you create two indexes, a lot of people say it will take six indexes to update. That’s not the case.

When you create one additional index, amount of the administrative tasks SQL Server has to do around that index update is way more than just doubling the time than your original update. So it’s quite possible, a lot of people say this is very generic advice, they say just remove all your indexes and recreate back. That is something your ETL process has to do, but again, that’s just a tradeoff. So you save time now, and when you rebuild all the indexes, you are going to lose the same time. So end result, it’s going to be the same thing, it’s just what makes you happy.

 

How can I capture who does what?

Brent Ozar: Let’s see, Emily says she’s been using a trigger to find out which login is logging in, like what users are logging in, and what database they access. But when they log in, people usually seem to log into master. “Is there a way that I can capture what queries people do in which databases?”

Tara Kizer: What are you trying to solve here? Because you’re going to be adding some performance overhead if you want to figure out what people are doing. I mean, you could possibly set the default database to whatever database they should be in. That way, they don’t go to master first because they’re going to end up in the right database with their queries, since the applications are working. But if you switch the default database to whatever database they should be in, you might be able to have easier success with this. I just wonder what you’re trying to solve here. I mean, you’re obviously auditing and this is going to eventually cause performance issues.

Brent Ozar: It’s hard when people do cross-database queries too, you know. They’ll join across five different databases.

Richie Rump: Because they can.

Brent Ozar: And union all, because they’re third-party vendors.

 

How can I get my data offsite fast?

Brent Ozar: Daryl says, “I want to get my data offsite. Y’all have mentioned backups to the cloud. What options do I have to get my data off to the cloud that would get me protected quickly?” And Tara wrote a white paper about this.

Tara Kizer: I like referring to that whitepaper with clients that don’t have any disaster recovery in place and they’re not willing or not able to currently spend any kind of money on a disaster recover solution. So I’m just like, well, how about just this cheap solution where you just send your backups to a storage bucket somewhere in the cloud, and then you at least have that. I mean, obviously, you’re going to need to send your source code. You can’t just have a database without an application, you know. So at least get that stuff out there. That way, if the primary site ever goes down, you could spin up servers in the cloud and then restore everything after that. It’s not going to be easy. It’s certainly not going to be easy.

From the database perspective, it’s fairly easy. The whitepaper covers all the stuff that needs to happen, but getting your whole environment up and running up there is going to be very, very painful, but at least you’re not toast completely.

Brent Ozar: It’s practically free too. It’s really cheap to get the log shipping going up there.

 

Should I drop my indexed views when changing replication?

Brent Ozar: And then the last one we’ll do, J.D. says, “I’m sorry for another replication question. We have indexed views on our replicated database, but because they require schema binding, we’re using pre and post replication scripts to drop and create the views and indexes. Is this a bad idea?

Tara Kizer: I don’t necessarily know if it’s a bad idea or not. It sounds like it’s working for you, so how can it really be a good idea if it’s working for you? I have not used indexed views in conjunction with replication, but I have had to use post scripts for replication where our source schema and the publisher was going to be different than the subscriber. So in the replication stored procedures, we changed those inserts and updates – it was just the insert and update stored procedures to modify the schema, and that worked fine for us. So if it’s working for you, is it a bad idea? I’ve never heard that it’s a bad idea, but I don’t know how many people are using replication in conjunction with indexed views.

Brent Ozar: Well thanks a lot everybody for hanging out with us this week. Thanks, Pinal for joining us and look forward to seeing people in your training class coming up in June as well.

Pinal Dave: Oh yes, I’m pretty excited. So yes, as we start to discuss, there are a few signups and I’m looking for a few more people to join in with us because I can promise it’s going to be fun and a lot of interesting demonstrations. And most important thing, what I’m looking at is the module three where cheating is allowed. I want to see how people cheat with each other and come up with the wrong answer.

So that’s going to be fun. If you come up with the right answer, bravo, but most probably, I’m going to be in there, so the person who gets the most number of the wrong answer, you are going to be the winner that day.

Brent Ozar: Nice. We’ll see everybody next week at Office Hours. Adios, everybody.

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