When you need to have information about one SQL_ID and don’t need everything and the kitchen sink, there are a few different ways to collect this via Oracle. I’m surprised how rarely this is covered in performance tuning/optimization, (whatever the current “acceptable” term is for fixing a database when there are performance issues arise… J) classes, manuals and documentation. I’d like to cover two of my favorite here and know, there are other options that I won’t be digging into, (SQLd360, SQLTXPLAIN, tracing, etc…) The Workload Repository SQL Report I also refer to this as the “SQL ID Specific AWR…
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I recently upgraded from the first edition Raspberry Pi to the new and improved Raspberry Pi 2 in a bundle Cana kit. The Raspberry Pi 2 has a 900MHZ quad-core Arm Cortex A7, (ARMv7 processor instruction set) with 1Gb of memory, GPU is a 250MHZ Broadcom VideoCore IV, 1080p 30 h.264/MPEG-4 AVC high profile decoder and encoder on the graphics and includes four USB ports, a micro SD, HDMI, micro USB power supply and a 15-pin MIPI camera interface. I like that the kid included a number of accessories, including an 8GB Micro USB card, the USB Wifi, 3.5 mm…
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There may be a reason that one needs to re-add a database to the AWR Warehouse. This is a new opportunity for me to learn and offer assistance, but I’m working off the grid to figure out a solution. Luckily, it’s just a matter of creating a new process from pre-existing code and processes. The process requires both the AWR Warehouse UI and a SQLPlus connection. 1. Disable the snapshots 2. Extract the AWR for the Database 3. Drop the database from the AWR Warehouse 4. Add the database back into the AWR Warehouse with the retention time or any…
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When sizing the AWR Warehouse, one of my requirements is to have certain reports for a sampling of databases that will source the AWR Warehouse. This report provides me the right information to create the correct sizing requirements vs. any assumptions done with other choices. The report is the General AWR Information report and can be found in the $ORACLE_HOME/rdbms/admin directory. It provides the following information: Time of Report AWR Retention and interval settings, including if non-default setting. Schema percentage of space used in the SYSAUX tablespace. Objects and space consumption in the SYSAUX tablespace, including breakdown of the AWR space…
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A common issue I’ve noted are dump files generated from the AWR Warehouse, but upon failure to transfer, the dumpfiles simply exist, never upload and the data is stuck in a “limbo” state between the source database, (target) and the AWR Warehouse. This can be a very difficult issue to troubleshoot, as no errors are seen in the actual AWR Warehouse “View Errors” and no data from the source is present in the AWR Warehouse. Empowered by EM Jobs If you go to Enterprise –> Jobs –> Activity and inspect the Log Report after a search for %CAW% jobs that perform…
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Here’s a quick guide to my schedule of sessions at IOUG Collaborate 2015 for this year. I’m looking forward to seeing everyone next week, (I’ll be arriving on Saturday, so I really should say in a couple days) and have no doubt we’re up for another phenomenal conference at Las Vegas, this year at the Mandalay! Additionally, there are some great opportunities in professional development at the IOUG Strategic Leadership Program. I’ll be speaking with James Lui on how to improve your value with personal brands and social media. I’m the WIT luncheon speaker on Monday, so for those of you that…
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Mauro decided to give me another challenge- run SQLd360 against the AWR Warehouse and let him know how it does straight “out of the box”. It’s a simpler installation process than SQLTXPLAIN, you simply unzip and run, (no installation of any packages…) I chose a SQL_ID from one of the source databases loaded and ran it for a 31 day history: SQL> @sqld360.sql 8ymbm9h6ndphq T 31 I saw a few errors scroll by on the screen as the process to collect the data and zip it up ran. There isn’t the same log file to see on successful runs to…
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I finally have a moment to look into my “hacked” SQLT XPRECT/XTRACT runs and see if the changes I made were enough to run properly with the AWR Warehouse. The answer is yes and no… and maybe “it depends”… 🙂 The Results The data from the AWR Warehouse to pull the corresponding data for the appropriate SQL_ID from the correct source database in the AWR repository worked, but the environment information still populates incorrectly, as I didn’t update anything outside of the get_database_id function in the SQLT$A package and the executables that call it, as documented in my earlier blog…
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Yeah, so I did it- I installed SQLTXPLAIN, (SQLT) on the AWR Warehouse! From previous experience with this fantastic tool, I was pretty sure I’d have some great new adventures with the AWR Warehouse data and I wanted to try and test out the AWR pieces of this tool with the Warehouse. This is a work in progress, so I’m going to do this blog in multiple parts to ensure we don’t miss anything. Installation I didn’t expect SQLT AWR features to work out of the box. I still needed to install it, run a few reports and see what would…
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Just over a year ago, it became public that I was leaving Enkitec for Oracle. Most folks had similar questions surrounding my decision, including my logic in giving up my ACE Director, an assumption that I would just disappear into the Oracle “machine”, considering the sheer size of the company and with my prominent company work history, what had prompted the decision. In this last year, my career has definitely surprised more than a few folks. I, in no way, disappeared into Oracle. In fact, I’ve been made more prominent and in doing so, assisted in shining a light on the…
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While presenting at HotSos in Dallas, Tx, an attendee, (thank you Wenju! :)) asked how page performance issues could be identified when the call was being made remotely and not from the Oracle Management Repository, (OMR) using the Page Performance console within Cloud Control. This is a very good question and although not straight forward, I would like to demonstrate what is available to assist in answering the challenge. First, I have to add that the answer is provided using release 12.1.0.4 of the Enterprise Manager 12c, so if you are still running an earlier version, your results may not…
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I’m at HotSos Symposium 2015 speaking this week, so thought I would blog about the results of the conference I’m the director of and that finished up just two weeks ago. I’m not admitting to being overwhelmed by OEM questions here, as I’m rather enjoying it. I love seeing folks so into Enterprise Manager and look forward to more! Keep the ideas for more blog posts coming! I’ll write on all these great topics in upcoming posts. Rocky Mountain Oracle User Group, (RMOUG) Training Days 2015 is over for another year, but the conference is a task that encompasses approximately…
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I’ve been running the Women in Technology, (WIT) at RMOUG, which I first started planning out in 2011, which has grown to include other user groups and even countries as its grown. The last couple years, I’ve worked to try to add a WIT scholarship to RMOUG’s, but it wasn’t always easy to convince others that we should provide one when you are asking to choose one group over another. There’s only so much money to go around and so many initiatives that we need to address each year for the Oracle community. For 2015, we had a unique candidate…
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Collaborate 2015 at the Mandalay in Las Vegas is just around the corner and the sheer amount of Enterprise Manager focused content is phenomenal! Oracle partners and power users around the world come together each year to provide the lucky attendees the best in use cases, tips and technical know -how regarding the best infrastructure management tool in the industry. If you are one of the lucky masses who attend this incredible conference from IOUG, Quest and OAUG, you’ll be searching the massive schedule of sessions for the presenters that will get you to the level of expertise you desire…
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Database Replay is a feature in EM12c that a lot of folks are unfamiliar with, but once they learn about it, well, now then they figure out how valuable it really is. Where the ADDM Comparison Report comes in really handy when you want to see what changed, think about how much more value there is if you could test out what a change in parameters, patches, or in code would do to a database and THEN use the ADDM Comparision Report to view the “What if’s”? This is where Database Replay really enhances the comparison report feature. along with…
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Active Session History, (ASH) reports are one of my favorite when investigating a performance issue. The biggest challenge I think that faces many administrators is to know when to turn to an ASH report and how to use the report to diagnose an issue. Today’s example is brought to us thanks to a Workload replay that should be a simple, but also, a clear step by step of when and why to use an ASH report. Top Activity In our EM12c environment, we note some high activity in a database and use Top Activity to view what’s going on: As…
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I’ve had a recent request to write an update on working with AWR reports, so as promised, here it is! The Automatic Workload Repository The Automatic Workload Repository, (AWR) was one of the best enhancements to Oracle back in release 10g. There was quite a goal put in front of the development group when they were asked to develop a product that: 1. Provided significant performance recommendation and wait event data enhancements over its predecessor statspack. 2. Was always on, meaning that the data would continually collect without manual intervention from the database administrator. 3. Wouldn’t impact the current processing,…
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The term “Service” is used to represent numerous objects within Enterprise Manager 12c. Although the most common reference to the term is related to the Oracle Management Service, (OMS), in this blog post, we are going to drill down and refer to all services identified in the drop down menu from Targets, Management Services and Repository. The two main services we are going to cover here are set up as part of the Oracle Enterprise Manager 12.1.0.4 installation and shouldn’t be edited or reconfigured, but I think it’s good to know where everything is if you should ever need to investigate it or are…