SQL Server Performance Tuning — Top 10 sessions caused blocking SELECT TOP 10 r.session_id, r.plan_handle, r.sql_handle, r.request_id, r.start_time, r.status, r.command, r.database_id, r.user_id, r.wait_type, r.wait_time, r.last_wait_type, r.wait_resource, r.total_elapsed_time, r.cpu_time, r.transaction_isolation_level, r.row_count, st.text FROM sys.dm_exec_requests r CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) AS st…
Category: AWS
Stored Procedure Error Logging
Stored Procedure Error Logging Create table to capture Errors Create Stored Procedure to Log Error Invoke Stored Procedure in TRY/CATCH Block USE TEMPDB; GO IF OBJECT_ID(‘APM.ErrorLog’) IS NOT NULL DROP TABLE APM.ErrorLog; GO CREATE TABLE APM.ErrorLog ( ErrorLogID INT IDENTITY(1,…
Install and Run SQL Server Docker Container on Mac
Install and Run SQL Server Docker Container on Mac Like most people, I use Mac , Windows as well Linux OS for development and testing purposes. Primarily I use Mac for Development purpose. I have few projects which uses SQL Server as…
Bulk Load Data Files in S3 Bucket into Aurora RDS
Bulk Load Data Files in S3 Bucket into Aurora RDS We typically get data feeds from our clients ( usually about ~ 5 – 20 GB) worth of data. We download these data files to our lab environment and use shell…
MYSQL / AURORA Database Troubleshooting
Number of Connections by Host SELECT SUBSTRING(HOST, 1, 10) , DB,USER , COUNT(*) AS Count FROM information_schema.processlist group by SUBSTRING(HOST, 0, 10) , DB,USER ORDER BY Count desc ; — ‘10.10.50.22’, ‘Portal’, ‘webguest-dev’, ’46’ Aurora Max Connections select AURORA_VERSION(); select…
Memory-Optimized Tables
Monitor Memory Optimized Table Space Usage : ; WITH system_allocated_memory ( system_allocated_memory_in_mb ) AS ( SELECT ISNULL(( SELECT CONVERT(DECIMAL(18, 2), ( SUM(TMS.memory_allocated_for_table_kb) + SUM(TMS.memory_allocated_for_indexes_kb) ) / 1024.00) FROM [sys].[dm_db_xtp_table_memory_stats] TMS WHERE TMS.object_id <= 0 ), 0.00) ), table_index_memory ( table_used_memory_in_mb,…
Brute force attack on SQL Server
Brute force attack on SQL Server If your business needs the SQL Server to be accessible on public network, you may be very vulnerable for brute force attacks. Following query will help you identify the failed login attempts and you…
SQL Injection attack on Website hosted on EC2 Machine
SQL Injection attack on Website hosted on EC2 Machine: I setup a website http://h1bsalary.online with publicly available dataset. As soon as I launched website, numerous trolls and automated bots sending traffic to identify the vulnerabilities. Safe-Guards I have taken so far :…
Install SQL Server Docker Container on Linux
Install SQL Server Docker Container on Linux and Connect through Client Tools I was surprised by ability to run setup and run SQL Server Docker container. It only takes about 2 commands and 2 Minutes. $docker pull microsoft/mssql-server-linux $docker run -e…
AWS Data Pipeline & Load S3 File Into MySQL
Getting started with AWS Data Pipeline AWS Data Pipeline is a web service that you can use to automate the movement and transformation of data. With AWS Data Pipeline, you can define data-driven workflows, so that tasks can be dependent on…
AWS Regions and Availability Zones
AWS Regions and Availability Zones C:\Users\Raju>AWS ec2 describe-regions C:\Users\Raju> aws ec2 describe-availability-zones EC2 Regions and US-WEST-2 Availability Zones References: http://docs.aws.amazon.com/general/latest/gr/rande.html http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#using-regions-availability-zones-describe
Tagged with: AWS
Restrict S3 bucket Access to VPC
Allow access to S3 bucket only from VPC Currently I am evaluating options to lockdown permissions to my S3 Buckets as part of Security Enhancements. These are the steps I followed to lock down S3 Bucket access only to my…
How to become DBA favorite Developer
Application Name : When a connection is made to SQL Server there are by default no way for SQL Server to know what software is making the connection. If several apps are using a shared SQL Server and there are…
AWS SLA Summary
AWS SLA Summary SLA Percentages Useful Links Cloud Provider Service Availability https://cloudharmony.com/status
AWS RDS First Touch Penalty
AWS RDS First Touch Penalty According to AWS Documentation The first time a DB instance is started and accesses an area of disk for the first time, the process can take longer than all subsequent accesses to the same disk…
Useful Free Tools and Books
Useful Free Tools Download Links Wonderful Microsoft utilities PerfMon , Profiler , Dynamic Management Views and System Tables should provide lot of insights and help in diagnosing and troubleshooting issues. These free tools are nice add-ons and improves the productivity. Download…
AWS RDS API Reference
AWS RDS API Reference Some of the RDS API command usuage . Editable parameters list for SQL Server. AWS RDS Options Group aws rds describe-option-group-options –engine-name sqlserver-se AWS RDS SQLServer SE 12.0 Parameter Groups aws rds describe-db-parameters –db-parameter-group-name default.sqlserver-se-12.0 AWS RDS…
Remote Host Identification SSH Error
Remote Host Identification SSH Error Rajus-MBP:.ssh Raju$ ssh -i Key.pem [email protected] @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)!…
AWS SQL Server RDS Native Backup Restore
Steps to Restore .bak SQL Server backup file to Amazon SQL Server RDS
Step by Step Guide to backup and restore SQL Server backups on AWS RDS through S3 Buckets.
Launching AWS SQL Server RDS
Learning from Launching AWS SQL Server RDS
We are evaluating options to migrate our read/write heavy production SQL Server database to amazon SQL Server RDS. We have pretty high throughput needs for few hours a day for few months in a year ,which is mission critical for our business success. We are evaluating pros and cons of moving to amazon RDS with provisioned IOPS. Current hosted provider doesn’t offer on-demand scaling solution .
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