DBA Mistakes to Avoid For Successful Data Management of SQL Servers

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A database is the organizedcollection, classification, and storage of critical business data in the computer system. Companies can later retrieve this information electronically to update, modify, or delete itaccording to their needs. Only then do these corporate enterprises get the desired results or output they are looking for. The corporate end-users generally install a software platform in their IT infrastructurecalled a database management system (DBMS). It contains a set of complex programs and applications which control the internal operations of their database. The software platform enables companies tomanage the business database they create and access their data.

What types of databases can companies create for their businesses?

Companies can choose to implement any of the following types of databases depending on their specific needs:

  • Relational database model where they store their business information in tables made of rows and columns,
  • Object-oriented database model which stores and represents the business information as objects,
  • Distributed database model which stores the business data in more than one file location on multiple computer networks,
  • Data warehouse model, which is a centralized repository designed to ensure fast data query execution and analysis,
  • NoSQL database model which stores and manipulates only unstructured business data, or
  • Graphic database model which stores business data as entities and their relationship with each other.

Each of the above databasescan perform a specific function and has its own set of benefits.

Database administrators and their key tasks in database management

Companies generally hire qualified DBA professionals to oversee their business databases’ management and optimum functioning like the SQL server. They are known as database administratorswith training in SQL and responsible for performing the following functions:

  • Installing and ensuring the proper working of business SQL database servers,
  • Developing the necessary processes for protecting the databases from potential cyber threats,
  • Establishing and enforcing standards among employees for accessing the databases’ contents,
  • Identifying genuine user needs among employees to create, access, and administer the databases,
  • Managing the employees’ accessibility privileges and restrictions on accessing the databases’ information,
  • Conducting performance tuning to ensure business databases functions optimally at all times,
  • Installing, upgrading, and controlling the relevant software applications running the SQL databases,
  • Diagnosing, identifying, and resolving all database errors,
  • Consolidating two or more old business databases into one if the need arises,
  • Managing all of the SQL database reports and visualizations which top managerial officials require, and
  • Implement the necessary back-up and recovery procedure to prevent data loss.

Critical mistakes database administrators should never make

Most of the above tasks which database administrators perform for their employers are routine and often considered mundane. In case the DBA is not careful, he might overlook some small but powerful things relating to the maintenance of SQL databases. However, each of these functions has its importanceto the companies when conducting their business operations. Neglecting any one of them can bring the activities of these corporate enterprises to a temporary standstill. In this scenario, companies could suffer considerable financial losses.

Even database administrators might get reprimands from the top managerial officials for their negligence. They also have to rectify the issues on time to prevent a server crash or downtime.Experts from leading data administration and Management Company, state IT specialists that are looking after SQL server databases should avoid making the following critical mistakes-

  • Forgetting to take regular backups of vital business data at the end of each working day,
  • Overlook the need tomaintain the businesses databasesto ensure their optimum performance properly,
  • Not carefully accessing the employees’ security access rights, privileges, and restrictions,
  • Waiting for the databases to display error messages before assessing workload levels, and
  • Inadvertently disabling page verification features on databases resulting in corrupt data.

What should the database administrator consider when handling SQL Servers?

Database administrators specialized in SQL performance tuning should not commit the followingerrors when overseeing the SQL Servers running the companies’ databases:

  • Failing to monitor the disk subsystems regarding individual space capacity and not input-output load,
  • Beingunaware ofhow the database servers’ performance affects the companies’ organizational needs in terms of:
  • Which manager or top official is affected when the applicationsare not working properly?
  • Downtime costs to the companies,
  • An unnecessary increase in business cycles, and
  • Being slow in implementing a thorough trouble-shooting strategy for the SQL Servers can result in:
  • Errors causing catastrophic data loss,
  • Slow response time to users’ queries and violations of service-level agreements,and
  • Loss of creditability


  • Forgetting to activate the SQL Servers’ installation default settings to ensure the system runs optimally,
  • Omitting to frequently change the SQL Servers’ default directory settingsfor back-up data and log files,
  • Failing to disable file auto-growth setting of the SQL Serversresulting in the creation of data files beyond a specific size,
  • Forgetting to test and thoroughly validate the SQL Servers’ backup compression setting before activating it,
  • Failing to activate the SQL Servers’ relevant automation and scaling features which can result in:
  • Difficulties in scheduling jobs,
  • Getting a large volume of the script with hardly any graphical user interface (GUI), and
  • Not receiving any error message notifications,
  • Activating the wrong SQL Servers’ features for the IT tasks the employees need to perform, and
  • Failing to take adequate and timely preventative SQL Server maintenance measures such as:
  • Consistency checks on the databases (DBCC),
  • Activating backup procedure verifications along with restore checks,
  • Defragmentation using the rebuilding Fill Factor or the Pad Index option, and
  • Refreshing Index Statistics.

Companies employ qualified database administrators for their expertise in ensuring their business databases run efficiently. These corporate enterprises depend on the optimum functioning of their databases to conduct their commercial operations. Any negligence on the part of the database administrators in performing their duties can disrupt their employers’ activities. It can result in considerable financial losses for them in the market. Moreover, the reputation and reliability of the data administrators come into question. This is why they should try to avoid the common database and SQL Server mistakes as far as possible.


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