sql server auditing best practices

SQL Server INDEX OPTIMIZATION Clustered Index , The data stored in the table is stored in the order of indexes. , Higher retrieval efficiency than normal indexes , However, data is added / Modify / The deletion has a large impact. Non-clustered Index , The data storage sequence in the table is not affected. , Low retrieval efficiency than clustered Indexes , Add data / Modify / The deletion has little

After all, the CPU of the database server was reduced from over 50% (opening five program threads) to 100% (opening 10 program threads. I found some tips and summarized them. 1. SQL server 2005's performance tools include SQL Server Profiler and database engine optimization

Tags: detail enhanced storage System load download personal Ability AC RAC Mon PROFESSIONAL SQL SERVER? Internals and troubleshooting (downloadable from here). Think the content is very good. I also want to have a more comprehensive understanding of SQL Server 2012, so look at the translation, and the focus of the cont

Basically, database snapshots allow you to create a static read-only copy of your database for other purposes, such as reporting, auditing, or data recovery. How does it work? A database snapshot creates a database shell for your existing database. When the data page is modified, the changes are also written into the sparse file. When people obtain data, the unchanged part of the data is obtained from the original database, and the changed part is

search for separate reports of data rows instead of using the group by clause. In this case, SQL statements using the distinct keyword are more efficient. Use group by when you need to calculate Aggregate functions (sum, Count, Max, etc. In addition, if your query always returns a unique row, do not use the distinct keyword. In this case, the distinct keyword only increases the system overhead. As you can see, there are a lot of technologies that c

created.Direct use of To_lob seems to be possible, but a closer look at the results will reveal that the long type data is not actually inserted into the table:sql> COL TEXT FORMAT A50Sql> SET LONG 50Sql> SELECT * from T2 WHERE ROWNUM ID TEXT---------- --------------------------------------------------12Sql> SELECT * from T1 WHERE ROWNUM ID TEXT---------- --------------------------------------------------1 Select OWNER, table_name, Tablespace_name, CLUSTER2 Select A.apply_name, A.queue_name, A.

Greg Robidoux, a Microsoft SQL Server security expert, is also the chairman of the SQL Server database administrator Special Interest Group PASS DBA SIG. "It usually takes time to make the application run, and security issues are not even discussed," Robidoux said. "Database administrators need to pay close attention a

data rows instead of using the group by clause. In this case, SQL statements using the distinct keyword are more efficient. Use group by when you need to calculate Aggregate functions (sum, Count, Max, etc. In addition, if your query always returns a unique row, do not use the distinct keyword. In this case, the distinct keyword only increases the system overhead. As you can see, there are a lot of technologies that can be used to optimize queries an

how many rows of data a user Amy can accessEXECUTE as USER = ' Amy ' ; SELECT user_name (),* from dbo. personnel; REVERT;ResultsTest user MartinEXECUTE as USER = ' Martin ' ; SELECT user_name (),* from dbo. personnel; REVERT;ResultsTest user SaraEXECUTE as USER = ' Sara ' ; SELECT user_name (),* from dbo. personnel; REVERT;ResultsRLS is indeed a useful feature of SQL Server 2016. But it also has some "s

, the implementation of the relevant data warehouse in the 1000GB scope provides support in its additional functionality. This white paper describes the best practices that are included when architecting an associated data warehouse or data market with a performance perspective on SQL Server 2005. The white paper also discusses some of the more common issues sur