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With one email per month you will be informed of all our content. Edited by: Virgil Aquilis on 09:35:41 what a query edit: oh come on Please resize image to a maximum of 400 x 120, not exceeding 24000 bytes, ty. From the main QuickSight screen, click New analysis, then New data set. If you do not want to miss our publications, subscribe to our newsletter. Specifically, I was curious to see how many support conversations came from each. We hope that you find the entrance useful and that it saves you some scare in the future. Once the migration is finished, we leave the parameter as it was previously: alter system reset "_lm_share_lock_opt" scope=spfile sid='*' With these times it is already possible to carry out the migration without problems, so we save the parameter for future migrations. The import of the procedures has taken less than 3sg!! Once done we test the import again with parallel 8 and the result is: 12-AUG-21 14:53:54.121: Processing object type DATABASE_EXPORT/SCHEMA/PROCEDURE/PROCEDUREġ2-AUG-21 14:53:56.577: Processing object type DATABASE_EXPORT/SCHEMA/PROCEDURE/GRANT/OWNER_GRANT/OBJECT_GRANT We make the parameter change and restart the two instances. Option 1 we have already seen that it is not viable, so we move on to try option 2. When we see the possible solutions we see:ġ/ Run metadata import with parallel=1 (default).Ģ/ Disable S-Optimization using: ALTER SYSTEM SET "_lm_share_lock_opt"=FALSE SCOPE=SPFILE SID='*' It seems that it is a failure that occurs since 12.2 in the blocking mechanism in the import processes. ‘Library Cache Lock’ (Cycle) Seen During DataPump Import in 12.2 RAC Environment (Doc ID 2407491.1) Researching in metalink we have found this note: In this case, the passage of the procedures has been solved in a very short time but the import of the tables causes us to leave the migration window, so we have a problem.
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Seeing that the only sessions in the database are those of the import we have tried to perform the import with PARALLEL=1 to see the behavior. When reviewing the waits of the import sessions we see that they stay in Library Cache Lock, being able to take almost 200 seconds for a single procedure and when there are many the times are extended more than the account. We conduct business analyst training in Bangalore, Hyderabad, Chennai, Pune, Mumbai and other major cities in India.Only in the step of creating the stored procedures has taken 2 and a half hours!!? ?? Let’s see why it’s taking time
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Please feel free to reach us in case you have any questions.īACentric is a service driven company specializing in the project management, business analysis and business continuity management. We provide the forward-thinking expertise to support business with preparing and managing the right conditions needed to implement effective and sustainable change. All he can do is to learn some simple functions to work with SQL which will help you do better in your data driven projects. Here is a summarized answer – a business analyst doesn’t need to get trained on database administration. Just to answer the question – Should business analyst know SQL ? You can get the data you want by writing a simple query without asking for any external help especially during the application testing. It will be very helpful for you to read and understand these documents when you know SQL basics. Having knowledge of SQL will help to do some basic tasks like creating a DB table, dropping or deleting it, creating and modifying the query to get the data out of DB tables, etcĪs a business analyst, you may need to work on ER diagrams which consist of all the information on the entities and relationships of the data and its flow. Most of the applications which are developed these days use RDBMS like Microsoft SQL Server. Did you know that the only way you can talk to these databases is through SQL? For some companies, if their database goes down, then their whole business stops. But now the business analysts are ‘required’ to have basic SQL knowledge (at least a few basic commands) to work on their daily tasks.Ĭompanies around the world rely on their databases to keep their businesses running smoothly and efficiently. Gone are the days when many thought that SQL knowledge is a ‘desirable’ skill for a business analyst to have. Why would they do that? There are many reasons why a business analyst should know SQL and how it is helpful. Nowadays many recruiters mention SQL as an IT skillset for a business analyst.