Questions tagged [maintenance]
In the context of a database, maintenance describes routine operational tasks around a database system, such as monitoring, tuning and backup procedures.
282
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Error message when running a SQL maintenance plan backup
I'm receiving the following error message when my daily maintenance backup plans execute:
Error Message 1:
[298] SQLServer Error: 407, Internal error. The string routine in file e:\sql11_main_t\sql\...
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votes
1
answer
91
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Analyze only one partition in PostgreSQL
I have a metrics table partitioned by year and month (metrics_y2023m01, metrics_y2023m02, etc). The analyze metrics command updates the statistics of the table and each partition individually, but the ...
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1
answer
41
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Partitioning using column from different table
I have a table ActionValues with the following columns:
AccountID
Action
ActionValue
This table is related with a second table called Actions that has the following columns:
AccountID
Action
...
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0
answers
133
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How to temporarily switch PostgreSQL to logical replication to allow major version upgrade without downtime?
We have a PostgreSQL cluster running on one master (db1) and two async hot-standby servers (db2 and db3) replicating from it. All the servers are working as a backend for a web service and all the ...
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1
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130
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During Maintenance in MSSQL SERVER i am getting the error: the step failed
In MSSQL Server, every Saturday a maintenance plan starts, where it rebuilds some indexes.
During the last month, it always fails after some hours with the message: The step failed.
Executed as user: ...
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2
answers
1k
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MySQL db optimization error on innodb tables
I have a database named 'mysql' which is being used on RHEL 8 server running MySQL 8.0.32.
When trying to optimize the entire database using the mysqlcheck command 'mysqlcheck -o mysql' the below ...
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2
answers
112
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SQL Grease : Strategy to maintain Azure SQL database
I am a developer that dabbles a few things across the entire stack. I have never had the opportunity to work to work on a product that uses a monolith Azure SQL database on a Premium tier scaled up to ...
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1
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142
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sp_BlitzCache detecting thousands of executions of CREATE PROCEDURE dbo.CommandExecute (from Ola Hallengren's Maintenance Solution) [duplicate]
I recently implemented the Maintenance Solution as a nightly job in my company's database, via Windows Scheduler. It works as intended, except for one issue - the procedures are being created ...
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1
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614
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Rebuild of DB fails, yet size of the DB has doubled
I attempted to rebuild all the indexes of a DB using the query,
USE [DB_Name];
GO
DECLARE @TableName VARCHAR(255)
DECLARE @sql NVARCHAR(500)
DECLARE TableCursor CURSOR FOR
SELECT '['+...
0
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2
answers
340
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Postgres: Dropping Database impacts performance
I worked on a DB-server hosting multiple big DBs including DBs that aren't used anymore. I wanted to drop one of those old DBs and it already took longer than I expected(over 40 seconds) then I ...
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Any possibility that Ola Hallengren could add a job name prefix option to the script that creates all the maintenance jobs? [closed]
When creating the jobs, they sort together for most of them, but some of the jobs are alphabetically far away from the other Ola jobs on servers with hundreds of jobs.
I would find it easier to see ...
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SQL Server - Maintenance - How to obtain duration per database from the commandlog table
Attempting to obtain the duration for individual maintenance operations per database in the commandlog table which is available in Ola Hallengren's maintenance scripts
If anyone has a better solution ...
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1
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231
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VACUUM FULL using another disk
Current database takes almost all of SSD free space ~802GB. 800 GB of memory is taken by single table and it was never vacuumed since 2019. Recently i deleted old rows from the table and now i need to ...
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6
answers
3k
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Is there any purpose of Ola Hallengren's SQL Server Index and Statistics Maintenance scripts on sql server running on SAN storage?
I have configured Ola Hallengren's backup and integrity check scripts.
However I want advice whether it is required to setup the SQL Server Index and Statistics Maintenance scripts, because my SQL ...
- 3,442
2
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1
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292
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Is there a proper order to run mysqlcheck commands in for periodic maintenance?
Is there a proper order in whcih to run the various mysqlcheck commands?
e.g. CHECK TABLE, REPAIR TABLE, ANALYZE TABLE, OPTIMIZE TABLE and also FLUSH TABLES and FLUSH LOGS.
I wrote this script that I ...
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AWS RDS "Maintenance Required"
I saw from the web interface that maintenance on my RDS postgresql instances is required, so I ran aws rds describe-pending-maintenance-actions, and it says that there's a "system-update" ...
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How to reduce the size of a SQL Server-Database?
Context
We have a Backup DB, where we normally store BackUps of tables from production DB before doing any updates/deletes. If anything goes wrong, we can restore the data from that table created in ...
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1
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2k
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Ola Hallengren maintenance solution
When I am executing the below query:
EXECUTE dbo.IndexOptimize
@Databases = 'USER_DATABASES',
@FragmentationLow = NULL,
@FragmentationMedium = NULL,
@...
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1
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150
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Oracle gather stats autotask being interrupted before maintenance window ends
a few months ago I managed to enlarge the maintenance windows for autotask on a pluggable database, this way:
BEGIN
dbms_scheduler.disable(
name => 'WINDOW_NAME');
dbms_scheduler....
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1
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3k
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How to forcefully drop all active connections off a database?
On one server I have a Postgresql database and there're many clients on other servers accross the internet that connect to it. I want to drop all the active connections on demand, they should be ...
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1
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237
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Turning off Secondary Replica in Always on availability group for maintenance
We are planning to turn off the secondary synchronous replica in our always on availability group for few hours for maintenance . Once we are done with the maintenance then we will need to failover ...
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2
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666
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When to analyze columns?
I have a table with millions of records. Before select, I run Analyze table (col1, col2).
We want to reduce cost, since a lot of IO operations happen in AWS Aurora.
Should I run analyze only when we ...
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616
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Schedule SQL Jobs from Central Management Server
I've set up a Central Management Server on a SQL Server 2016 instance. I'm able to manually run queries against multiple servers, but I want to be able to run automated maintenance scripts.
Is there ...
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4
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194
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Index Maintenance on busy OLTP database
I have a database where constant read writes happening all the time. Searches are being done with wild card entries. The server is on SQL 2016 standard edition.
There is no budget for enterprise nor ...
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2
votes
1
answer
330
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Limiting total number of records in a table with a nightly job
We have a table that stores audit records (Log in, log out that kind of thing), we already have a nightly job that archives any data that is older than 3 months.
However every week or two we get ...
- 121
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3
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761
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How to perform bulk delete and release free space?
Good Afternoon,
We have a database that wasn't been an archive anytime. The database has grown tremendously and we are running short of space. Hence there is a need to do a bulk delete and free space. ...
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115
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Which is the best approach to "suspend" the activity of a whole AOG cluster thinking on start it again later?
My company is going to migrate some services from one on-prem site to another but the database servers will remain in the same location (for now).
I've been asked for "suspend" all the ...
5
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2
answers
2k
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Auto vacuuming high-write, high-update, and mostly read table types
What are good auto vacuum settings (recommendations) for tables like:
High Write Table Insert load
Range between 30-10,000 inserts in a day. The table can idle for weeks without load, but can get ...
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2
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302
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Finding tables & columns at risk of hitting max value of int
I just took over a medium-sized postgres database and the team has been surprised with many tables hitting their auto-incrementing id int max limits which triggered unscheduled downtime to fix.
Does ...
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In Postgres, what should be the autovacuum strategy for big tables (hundreds of millions rows) that get added/removed thousands of rows every day?
I have quite a big table with a lot of daily traffic for reads, inserts and deletions. Currently, it has 392 million of live tuples and 27 million of dead ones. Vacuum settings (...
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88
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SQL Server online maintenance - False publicity?
I'm being challenged since we have customers that are seeing different types of errors while running what is supposed to be online maintenance. errors like timeouts, scan stopped due to data movement ...
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435
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DBCC CHECKDB behavior with MAXDOP settings
I am trying to understand the DBCC CHECKDB usage with MAXDOP settings-
If i run DBCC CHECKDB with MAXDOP = 0 on a SQL instance where my MAXDOP settings is 8, what is happening actually? Is all of my ...
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99
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Are there differences between which AlwaysOn AG server (Primary or Secondary Replica) I store my backups and retention maintenance plans on?
I have an AlwaysOn AG system in place between two servers. Server A hosts the primary replica, Server B hosts the secondary replica.
Are there any differences if my Full & Transaction Log ...
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62
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How to select specific databases in a backup retention policy maintenance plan cleanup task?
I have full backups of three different databases. Right now all of their backups follow the same retention policy, but I need to setup the retention to a different amount of time for each database.
...
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41
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Does this plan work as a Failover strategy-SQL Server 2016 Standard Edition
We have two SQL Server 2016 Standard edition (standard edition due to budget issues) configured one as primary sql server and another one as fail-over server.
I have implemented Transactional ...
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3
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374
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How to maintain a query that runs forever?
I would like to run a query that finds prime numbers, and I would like to run it forever.
@Solomon Rutzky on this page Prime numbers in a given range , give us a good example of the Sieve of ...
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3
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174
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Hide business data from maintenance user
I'm newbie in postgres and have a question:
we have some clients that have ultra-super-secure-sensitive data on postgres and they don't want to show it anyone. but sometime, the apps experience some ...
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58
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Running CheckDB on a clone
My company are looking to bring in Redgate's SQL Clone to deploy live databases into other environments. I wanted to see if running CheckDB on these clones was a viable option instead of restoring a ...
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75
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Foreign Keys delete data [closed]
I am failing to understand a few concepts about FKs, i have some really big tables (dozens of million rows) with lots of FKs and i want to delete old data, i can disable FKs -- delete Data -- enable ...
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867
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log to table vs log to output file
I am using ola-hallengren solutions for database maintenance.
A question about the log, I see in the documentation website:
LogToTable: Log commands to the table dbo.CommandLog.
Value Description
...
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2k
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Reset all sequences so that they continue after max(id) + 1?
It looks like I messed up a database migration and while all sequences are there, they would start at 1, which triggers errors like:
django.db.utils.IntegrityError: duplicate key value violates ...
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IndexOptimize - Configuration
We recently switched to Ola Hallengren's maintenance script and automated the deployment of MaintenanceSolution.sql to our customers's SQL Server instance.
We need to set these parameters for the job ...
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7k
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Postgres VACUUM taking forever
I have an specific table that is taking forever o VACUUM.
There are no locks in the DB and even letting it overnight the VACUUM didn't finish.
According to the statistics (ANALYZE works fine) the ...
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SQL Server Backup failing Error :3041
I am running SQL Server 2008R2 Express edition. For all databases full backup, I am using expressmaint.exe. In this, I am using the command
-S server name -D ALL -T DB -R
D:\SQL_BACKUP\...
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989
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What is the behavior of SQL Server Maintenance Plan - Clean Up task for deleting old backups
This seems pretty obvious, but it's remarkably hard to find an actual document that addresses this.
The scenario:
Full Backup - Weekly (Set to expire after 7 days)
Differential Backup - Daily (Set ...
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2
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670
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Monitoring Maintenance Tasks in AlwaysOn Clusters
I have an environment with multiple AGs on a single server and they encounter a split situation in which some end up on one node and some end up on the other node (in a failover event, perhaps). When ...
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2k
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Azure SQL Database and Database Maintenance
If SQL Agent isn't available for Azure SQL Database then is it possible to maintain (indexes, statistics etc) the databases with Ola Hallengren's maintenance scripts, for example?
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695
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Database Maintenance Job and Backup Scheduling
I would request to have expert advise on scheduling maintenance and backup jobs. Below was the scenario prior to my change:
Full backup of database scheduled to run at 12:30AM everyday.
Differential ...
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263
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How full is my innodb shared table space?
How can I find out how much data is in the innodb shared table space.
I have a massive shared idb file but I suspect that it contains only about 350 Gigs of data. I need to know how full it is so I ...
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2
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2k
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sp_MSforeachdb Continue on failure when running DBCC CHECKDB
I have the following maintenance script
DECLARE @sql NVARCHAR(30) = 'DBCC CHECKDB(?)'
EXEC sp_MSforeachdb @sql
This checks every database for corruption. I have run this on my test server where I ...
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