In the context of a database, maintenance describes routine operational tasks around a database system, such as monitoring, tuning and backup procedures.
3
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1answer
77 views
Central stored procedure to execute in calling database context
I am working on a customized maintenance solution using the sys.dm_db_index_physical_stats view. I currently have it being referenced from a stored procedure. Now when that stored procedure runs on ...
5
votes
6answers
385 views
Find procedures that haven't been called in <n> days
We are deleting old stored procedures and tables.
How can I know what procedures haven't been called recently?
dm_exec_procedure_stats and dm_exec_query_stats aren't reliable, since they only return ...
1
vote
2answers
46 views
Eliminating duplicate records in data cleansing
I have a database full of records of people with simple information like first name, last name, email, location, ... . I need to eliminate the duplicate records. As I've search the process is called ...
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vote
0answers
52 views
Generate usage log
I'm trying to automatically generate an events log report in sql server that does the following:
Records events including successful login, Create/Delete Account, An Account was Unlocked, Account ...
2
votes
2answers
217 views
Why doesn't DELETE + REORG free diskspace (DB2)?
In DB2 I have a table containing large binary data. Now i purged the whole table and ran runstats, reorg, runstats, but the amount of disk space taken does not change. What could be wrong here?
The ...
0
votes
1answer
64 views
Object name 'Clean Up History' in use when trying to complete the maintenance plan wizard in SQL Server 2008 R2
I am trying to create a maintenance plan on a instance running SQL Server 2008 R2 SP1 (no CU's installed).
When completing the wizard I get the following error:
The object name cannot be changed ...
3
votes
3answers
64 views
Which system databases should I checkdb and defrag indices?
I have SQL Server Agent (2005) jobs that periodically perform CHECKDB and a defrag (ALTER INDEX REORGANIZE/REBUILD) of any index that is highly fragmented. These are typical maintenance best ...
4
votes
1answer
116 views
Process attempted to unlock a resource it does not own
SQL Server 2005 SP4 32-Bit
I have a DBCC CHECKDB job running nightly. Last night, soon after the job started, I got the errors below. The database is NOT in suspect mode, and CHECKDB comes back clean ...
6
votes
1answer
195 views
Role of Database Administrators
I am currently working as an application developer on a project which involves the creation of a new SQL Server database. I am actively working with a group of DBAs who will play some role in the ...
4
votes
2answers
156 views
Can't select database for transaction log backup in maintenance plan
I am running into a problem while trying to save a transaction log database backup maintenance task:
Add the 'Back Up Database Task' to the maintenance plan.
Edit the task.
Select backup type: ...
3
votes
1answer
159 views
PostgreSQL 9.2: vacuum returning disk space to operating system
Vacuum usually does not return disk space to operating system, except some special cases.
From the docs:
The standard form of VACUUM removes dead row versions in tables and indexes and marks the ...
1
vote
2answers
88 views
Database design that handles data growth with time
I have a big table that stores video rental data with the following columns:
id, title, language, duration, owner, remarks, closing_date_for_loan
Assuming every day there are thousands of data ...
5
votes
3answers
846 views
Stop SQL Server service(s) before defragmenting drive?
Our production SQL Server 2005 database's data files live on a separate physical drive, which Microsoft Windows 2003's Disk Defragmenter tool reports as 99% fragmented.
We scheduled a task to ...
1
vote
1answer
272 views
Creating indexes with t-sql scrips vs rebuild indexes in maintenance plan
I’m using SQL Server 2008 and I am running several (15) scripts each day to bulk insert to tables. Each script drops the table at the beginning. I create indexes in the scripts. Some of the scripts ...
7
votes
2answers
199 views
Different results rebuilding an index online and offline
I have a non-clustered, non-unique index on a foreign key column of type bigint. When I rebuild the index online, the average fragmentation drops to 3%, with 2 fragments, and 30 pages.
When I run ...
0
votes
1answer
90 views
Maintenance in MYSQL when innodb_file_per_table disabled
I have read your post and I completely understand OPTIMIZE TABLE to perform in an environment where innodb_file_per_table is disabled, does not shrink the global ibdata1 tablespace.
But what if I ...
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vote
3answers
254 views
Should I manually VACUUM my PostgreSQL database if autovacuum is turned on?
I use software which makes a big PostgreSQL database (there is a table with a million rows in it) and the developers says I should VACUUM and ANALYZE periodically. But the PostgreSQL database default ...
2
votes
1answer
95 views
Tools and methodologies to keep to DBs aligned [closed]
2 DBs having schemas that represent the same semantic objects.
The first one is production DB (Non-RDBMS, in-house implemented in-memory DB with shitload of RAM). Other is Postgres.
Once in a while ...
5
votes
1answer
158 views
Reindexing plan
I have a reindexing plan failing with error message:
Refresh failed for PhysicalPartition '1'
(Details: SQL Server Enterprise edition running in cluster)
Searching through BOl and other online ...
2
votes
1answer
156 views
Disadvantages of reorganizing all tables nightly
I consider scheduling a SQL Server job that reorganizes all tables nightly. We don't have enterprise, so we cannot rebuild online (this means we need to reorganize). We also don't want to invest too ...
5
votes
1answer
270 views
How can I fix “Cannot perform a differential backup … a current database backup doesn't exist”?
We recently switched to the FULL recovery model, with full backups being done every weekend, and differentials being taken every day.
The problem is, the differential backups don't always seem to ...
1
vote
2answers
703 views
Shrink database operation in maintenance plan failed
EDIT: The solution was to remove the DB shrink and modify the rebuild index task. I was rebuilding an index on 3.8 million rows. This was causing SQL blocking. I have removed the rebuilding index task ...
5
votes
2answers
116 views
Thought about this SQL Server backup plan?
I just started a new job, and I'm reviewing the database maintenance plan. I've got quite a bit of experience writing SQL, but not much experience with DB administration. My last job was at a large ...
2
votes
2answers
670 views
Do I need to RUNSTATS after a REORG in DB2?
The REORG documentation says:
BUILD
Builds indexes. Updates index statistics.
But I have always heard REORG/RUNSTATS as if they should be paired. Can anyone verify that "Updates index ...
1
vote
1answer
319 views
Use of Shrink after rebuilding Indexes in sql server 2005
I need to create a weekly database plan for my company's databases (5.8Gb), now I want to rebuild the Indexes, and then want to trigger a Shrink operation. Now I know Shrink creates Index ...
5
votes
3answers
168 views
Database Indexing - Maintenance Jobs
I have created a script that runs every night to rebuild & re-organize indexes based on the fragmentation, Indexes with Fragmentation > 30% are rebuilt, Indexes with Fragmentation 10% - 30% are ...
1
vote
1answer
134 views
Database design with different user roles connected by different relationships to one organizaiton table
An user is connected to an organization by some role. Lets say there are 2 roles freelancer and employee.
One employee can only be a part of one organization and if he is an employee then he can't be ...
0
votes
2answers
276 views
Can you set up a SQL server maintenance plan to restore a database?
I am looking to setup a maintenance plan that makes a backup of a database (Database1) and then restores to another database (Database2) to confirm that it is able to restore successfully.
Can I do ...
0
votes
0answers
223 views
Unable to view “Maintenance Plan” folder under Maintenance in SQL Server 2008 R2 Standard Edition
SQL Server version is as follows :
Microsoft SQL Server 2008 R2 (RTM) - 10.50.1600.1 (Intel X86)
Copyright (c) Microsoft Corporation
Standard Edition on Windows NT 5.2 (Build 3790: Service ...
6
votes
1answer
242 views
Can I “Execute T-SQL Statement Task” against all user databases?
I'm setting up a maintenance plan on Sql Server.
I want to add an Execute T-SQL Statement Task to the plan, however I do not see any way to set this task to run in every [user|system|all] database as ...
2
votes
1answer
888 views
SQL Server 2008 - Run the Check Database Integrity Task with the PHYSICAL_ONLY option?
As part of our nightly maintenance, we include the Check Database Integrity Task which is an encapsulation of the DBCC CHECKDB command. It's beginning to take a considerable amount of time due to the ...
2
votes
2answers
351 views
Reorganize Indexes T-SQL
I'm moving a database to SQL Azure and with that I lose the maintenance plans so I am going to use a Worker Role to schedule them. When I open the properties of the Rebuild Index Task and click on ...
2
votes
0answers
166 views
How to do automated archiving for a SQL Server database based on interpretation of database metadata?
I am looking for a solution giving me automated archiving of SQL Server databases based on a smart interpretation of table relationships that is able to archive records from related tables minimizing ...
4
votes
2answers
445 views
Should we need to use Barriers on a production database (MySQL/InnoDB)?
Even though we are using a journaling filesystem (EXT3) with barrier enabled, is this still safer and recommended?
e.g
mount -o barrier=1 /dev/sda /mntpnt
Reference:
...
3
votes
1answer
388 views
Daily database maintenance using SQL Server 2008 and a stored procedure
I have created a database maintenance plan using wizard though that link for SQL Server 2005.
I have created a Maintenance Plan for SQL Server 2008 and it works fine.
Now I required to complete the ...
7
votes
2answers
3k views
When To Update Statistics?
I've inherited a Maintenance Plans that does the following:
Cleanup old data
Checks DB integrity
Performs Database and Transaction Log Backups
Reorganizes Our indexes
Updates Statistics
Delete old ...
3
votes
1answer
473 views
Executing the query “UPDATE STATISTICS [dbo].[Contact] WITH FULLSCAN …” failed
My maintenance plan fails with the following error on one of my databases does anyone know how I can fix this problem? is is a corrupt table?
Executing the query
UPDATE STATISTICS [dbo].[Contact]
...
2
votes
1answer
183 views
Need advice for a 'tag' table design
My website has different content types. All content types should be tag-able (except if specified in the model, whatever). I can think of 2 options for my design:
2 tables option : 1 table for the ...
2
votes
2answers
123 views
Is it possible to retrieve the specific databases selected in a maintenance plan step?
I would like to use a tsql query to retrieve the databases involved in one of the steps in a database backup plan I've created. From a previous question, I understand that somehow, the data is ...
1
vote
1answer
120 views
How to know there is a maintenance job running on a postgresql database
I have a python script on postgresql database which is fetching records from sql server database and inserting it to postgresql DB after some filtering. this jobs is running by cron every two minutes. ...
2
votes
1answer
118 views
Thoughts about Oracle backup procedure for 11.2 (beginner question)
Two days ago we "found out" that our old, not taken care of, horribly neglected, Oracle DB server was extremely important to our business.
The only person who knew anything about this server was ...
12
votes
4answers
7k views
When is it OK to shrink a Database?
I know shrink is the devil: It reverses page order and is responsible for skin cancer, data fragmentation, and global warming. The list goes on... That being said, say I have a 100 GB database and I ...
1
vote
2answers
357 views
Backup database and clean old backup question
Right now we have a maintenance plan which looks like this:
backup all databases
clean old backups (> 24 hours)
This job runs every day.
Every now and then this script crashes during backup step ...
1
vote
1answer
65 views
Log Custom SQL Results During Maintenance Plan
I would like the last step of my Maintenance Plan to execute a simple custom SQL script (SELECT * FROM <SomeTable> WHERE <Condition>), and save the results to a file (Text, CSV, etc).
Is ...
2
votes
1answer
306 views
Maintenance Plan Takes Too Long - Locks Tables - Indexing To Blame
System:
I have a Maintenance Plan that Rebuilds Indexes for Several Tables (10 tables, 50M records total).
Issue:
During the Index Rebuild (~20 minutes), we fail to insert data into the DB
...
0
votes
0answers
306 views
Update Statistics Maintenance Plan - Ambiguous column name error
Microsoft SQL Server 2008 R2 Web Edition (RTM) - 10.50.1600.1 (Intel X86)
Windows 2003 R2 SP2
I am in the process of setting up a maintenance plan to update statistics on a daily basis for all user ...
1
vote
1answer
71 views
Where and with what should I be looking for a good hardware backup tool?
Until now, I was doing my SQL Backups using USB Hard disk, and copying that to my local computer. After that, I went zipping and burning onto DVDs.
Now I want to push that on more professional and ...
1
vote
4answers
324 views
Maintenance Plan for all Online databases doesn't execute for all databases
Using SQL Server 2008 R2, I have a maintenance plan that has a basic Backup All Databases (ignore offline) task, and clean up after 7 days.
However, I note that sometimes I lack backups for ...
6
votes
2answers
880 views
Defragmentation - Rebuilding Indexes SQL Server 2005
I'm researching defragmenting databases and it seems the following SQL statement is what I'm looking for:
ALTER INDEX ALL ON mytablename
REBUILD WITH(ONLINE = ON)
When I pull the info from ...
5
votes
4answers
834 views
How does SQL Server reduce index fragmentation?
If a user never runs REBUILD or REORGANIZE on their database, does SQL Server still somehow defragment the indexes?
MSDN suggests that if an index is over 30% fragmented, it is recommended to run ...
