Human misfeasance the dba s failure to monitor their database statspackawr, setup exception reporting alerts oem and adjusting their instance to match changing workloads is a major cause of poor performance. Even though enterprise manager and db console will help the dba with its monitoring capabilities and manageability, there are few gaps which need to be managed by dba manually. Oracle goldengate on oracle cloud marketplace part 1 march 29, 2020 pluggable database cloning using snapshot copy october 29, 2019. List all tablespaces with free space jun 29, 2009 recent posts. If an object has extents in an online file of the tablespace, you will see extent information about the offline data file. Top oracle dba, rac, and performance tuning questions on advanced topics for experienced professionals. Free space in auto extensible tablespaces oracle worklog. Find answers to slow export using datapump with blobs. On my small system i get results instantaneously, and the query seems to be correct. Nov 06, 2015 ive downloaded oracle 11g enterprise edition from oracle website in order to install it and use it as back end for our management system, and after ive installed it i didnt find any product key or license notification, is it free of charge or what. Top oracle dba, rac, and performance tuning interview questions.
Solved is oracle11g enterprise free or need license. On a slow network, it is impossible to achieve high data entry speeds. Getting started with oracle database 11g express edition. Note that if a data file or entire tablespace is offline in a locally managed tablespace, you will not see any extent information. Query can be used to find datafiles which are not in use and can be resized looking into the free percentage. The script you used above and other scripts that i have seen before use this logic to determine used space. Oracle is an enormous system, with myriad technologies, options, and releases including the latest, oracle database 11g. Oracle database administrators guide, 11g release 2 11.
Oracle database concepts for a discussion of free space. Jan 03, 2015 we provide the oracle dba online training along with digital course materials, practice sessions, project support, interview preparation and many more. Note that if the tablespace has autoextendon then free space will be determined by the disc size rather than the tablespace size. Bob bryla is an oracle 9i and 10g certified professional with more than 20 years of experience in database design, database application development, training, and oracle database administration. Unix scripts for oracle dba s oracle 11g new features oracle performance tuning sql scripts for oracle dba s unix and linux for oracle dba vi editor commands windows os and oracle dba cron jobs unix file management dba tips and tricks greenplum postgresql quick ref pgpsql quick ref find command in unix. The server has a 420 gb hdd, and runs a microsoft sql server and an oracle server10g. First we tried to move the backup to an other drive but this didnt. Here is a simple script to display oracle free space within the data file space. If that is slow too post information about your tablespace confiiguration. So i searched my oracle support mos and found the following mos note. For a free poster of these oracle space views, click here. Jul 07, 2010 you may notice that your script showing free and used space in each tablespace takes very long to complete. He is the primary internet database designer and an oracle dba at lands end in dodgeville, wisconsin.
I recently discovered, in our production database, that the query used to monitor free space in tablespaces was starting to show in top sql in performance. One good reason for this is, that there is never a single book that speaks to a reader exactly how the reader wishes it to, consistently covering every topic of interest. Oracle 18c multitenancy new features snapshot carousel, cdb fleet and container maps october 29, 2019. Now we have approximately 5gb free and need to make a backup of the sql server database. We have just loaded a 100gb microsoft sql server database. This book distills an enormous amount of information about oracle into a compact, easytoread volume filled with focused text, illustrations, and helpful hints.
Best oracle developer and administrator database tools free trial. I was very curious to see how the book compared with the similarly titled oracle database 11g performance tuning recipes book, as well as some of the other oracle database performance books that are on the market. Although appropriate during normal use, this can slow bulk loads dramatically. Maintain a highperformance oracle database using the best practices and expert techniques in this oracle press guide. See oracle database administrators guide to learn how to monitor the operation of the. Hi pavan, i had seen you blog on the oracle dba which is very simple and easily understandable but i am beginner for dba and i am from database develpedment background and i am planning to shift to dba professional so kindly can you provide any material which you had written since i had seen many articles on dba but i am not understanding. Developers and dbas get help from oracle experts on. This section contains free ebooks and guides on oracle 10g, some of the resources in this section can be viewed online and some of them can be downloaded.
Oracle database concepts pdf 542p this manual describes all features of the oracle database server, an objectrelational database management system. You may notice that your script showing free and used space in each tablespace takes very long to complete. Part vi oracle database administration and development. Your dba never needs to back up a temporary data file, and in fact if they. Query to find oracle datafile used and free space and its. Just the other day, i was just trying to monitor tablespaces storage details using oem c. Step by step mastering oracle database cloud service dbaas. Sep 28, 2015 i will recommend you use multiple sources to teach yourself. The bc list is similar, but our top10 list is based on. Oracle database 12c dba handbook is thoroughly updated to cover the new features and utilities, including the multitenant architecture, oracle database inmemory option, and cloud enhancements. Orneklerle oracle 11g r2 ve genel kavramlar oracle 11g r2 general concepts with examples was published as a book. Note that if a datafile or entire tablespace is offline in a locally managed tablespace, you will not see any extent information. Oracle database performance tuning guide 11g release 2. How to install oracle database 11g enterprise edition on windows 7 64 bit.
Aug, 2012 this query gives usage of datafile, percentage free in the datafile. Free oracle 10g books download ebooks online textbooks. Oracle dba 11g training tutorial oracle dba training videos. To download free release notes, installation documentation, updated oracle. Feb 23, 2010 free space in auto extensible tablespaces for any database administrator monitoring the free space is one of the primary jobs. Articles oracle 8i oracle 9i oracle 10g oracle 11g oracle 12c oracle c oracle 18c oracle 19c miscellaneous plsql sql oracle rac oracle apps weblogic linux mysql. The oracle documentation lists these ten reasons for poor performance. In continuation of the previous article, top oracle interview questions, this article includes a set of interview questions to cover some advanced oracle concepts like database architecture, backuprecovery of database and performance tuning. Oracle manages the storage space in the data files of a database in units called data blocks.