Software Applications Programming Errors and solutions.

SQL Error:  Database-Unavailable database  :testdb is unavailable(suspect,offline,recovering etc) 1.If the database is offline, the approach should be to bring the database online by either from GUI or from query : ALTER DATABASE <database_name> SET ONLINE and if it still doesn't come up..we should check the logs for the reasons..and based on the outcome we have to proceed accordingly. 2.If the Database is offline, then try to make the database online using the script ALTER DATABASE <database name> SET ONLINE. If it is not recover the database to online, then check in event viewer for possible error, if error is 17204--then data file has damaged,if error is 17207--- then log file has damaged,If you see this error then the database is there in suspect state. To Recover the suspect state database u need to follow steps as below: If data file damaged: 1. Take the tile log back up. 2.Restore Full back up with no recovery. 3.Restore Differential & Log Backups

These are the task list that must be done by a DBA on daily basis. 1) Check System Event Logs and SQL Server Error Logs for unusual events. 2) Verify that all scheduled jobs have run successfully. 3) Confirm that backups have been made and successfully and moved to the backup storage or secure location. 4) Monitor disk space to make sure SQL Servers will not run out of disk space. 5) Periodically monitor performance of database and system using both System Monitor and SQL Server Profiler. 6) Monitor and identify blocking issues. 7) Keep a log of any changes you make to servers, instance setting, database setting and monitoring script. 8) Create SQL Server alerts to notify you of problems, and e-mailed to you. Take action as  needed. 9) Regularly restore backups to a test server in order to verify that you can restore them. Summary: Installing DB software Creating databases Performing upgrades of the database and software to new release levels Starting u