A simple guide to AWS SCT multiserver assessment

Question: I have to prepare a report to assess the potential workload of converting SQL Server databases to AWS PostgreSQL targets. There are a large number of databases , so i'd like to identify if there is a method through the AWS toolset to create this report for multiple databases. I've been using the AWS Schema Conversion Tool (SCT)  to create individual reports , but these are time consuming , as it has to be done one-by-one  

Answer: Within the same tool you're using - AWS SCT - there is another option  when you create a new project called "Mutiserver". The "Multiserver" option is available when you attempt to create a new Project. 

An input file is required to list the source databases and related metadata . For a step-by-step guide check the AWS documentation on :  CHAP_AssessmentReport.Multiserver.

Typical output will include:

1) A folder per database which will include all the changes recommended and in the same folder a summarised PDF document

2) When using the Multiserver option there will also be covering all the database with following columns & I'm also including some sample output . 

Server IP address and port,Secret Manager Key,Name,Description,Database name,Schema name,Code object conversion % for "Amazon Aurora (PostgreSQL compatible)",Storage object conversion % for "Amazon Aurora (PostgreSQL compatible)",Syntax Elements conversion % for "Amazon Aurora (PostgreSQL compatible)",Conversion Complexity for "Amazon Aurora (PostgreSQL compatible)"
"127.0.0.1:50000","","DB1","","myDB1","myDB1.dbo","100.00%","100.00%","100.00%","1"
"127.0.0.2:50000","","Db2","","myDB2","myDB2.dbo","70.45%","100.00%","98.76%","2"
"127.0.0.3:50000","","DB3","","myDB3","myDB3.dbo","100%","100.00%","100.00%","1"

Notes :

These definitions are from the AWS SCT help guide

"Code object conversion % for" -  "The percentage of code objects in the schema that AWS SCT can convert automatically or with minimal change. Code objects include procedures, functions, views, and similar."

Storage object conversion % - "The percentage of storage objects that SCT can convert automatically or with minimal change. Storage objects include tables, indexes, constraints, and similar".

Syntax Elements conversion % - The percentage of syntax elements that SCT can convert automatically. Syntax elements include SELECT, FROM, DELETE, and JOIN clauses, and similar.

Conversion Complexity -

"The conversion complexity calculation is based on the notion of action items. An action item reflects a type of problem found in source code that you need to fix manually during migration to a particular target. An action item can have multiple occurrences.

A weighted scale identifies the level of complexity for performing a migration. The number 1 represents the lowest level of complexity, and the number 10 represents the highest level of complexity."

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