AWS using Ansible? Yes, it's possible!

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  Although, I've used Ansible extensively for a lot of automation and orchestration tasks, using Ansible for AWS was indeed, a new territory for me.  This turned out to be a blessing, since along with using Ansible for AWS tasks, I also learnt how to use WSL (Windows Subsystem for Linux) on a Windows machine. Though WSL's been around for some time, I still hadn't come around to using it since I was mostly using my Macbook pro. Not anymore, though!  Anyway, I have listed below the steps to: Install WSL on Windows 11 23H2 patch Install AWS CLI on Ubuntu 22.04 (Exact version - 22.04.3 LTS) Install Ansible and the amazon.aws collection Use AWS CLI to get the list of  VPCs in the region - us-east-1 (or a region of your choice) Create a python file/script to get the list of VPCs in the region - us-east-1 (or a region of your choice) Create an Ansible playbook to get the list of VPCs in the region - us-east-1 (or a region of your choice.   You may download the complete installat
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Find the size of the control files

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Below is the SQL statement to find the size of the control files.


select (BLOCK_SIZE * (1 + FILE_SIZE_BLKS))/1024/1024 "CONTROL_FILE_SIZE (MB)" from sys.v_$controlfile where rownum = 1;

OR

select distinct (BLOCK_SIZE * (1 + FILE_SIZE_BLKS))/1024/1024 "CONTROL_FILE_SIZE (MB)" from sys.v_$controlfile;


Eg:

SQL > select (BLOCK_SIZE * (1 + FILE_SIZE_BLKS))/1024/1024 "CONTROL_FILE_SIZE (MB)" from sys.v_$controlfile where rownum = 1;

CONTROL_FILE_SIZE (MB)
----------------------
18.515625


SQL > select distinct (BLOCK_SIZE * (1 + FILE_SIZE_BLKS))/1024/1024 "CONTROL_FILE_SIZE (MB)" from sys.v_$controlfile;


CONTROL_FILE_SIZE (MB)
----------------------
18.515625

SQL > select distinct (BLOCK_SIZE * (1 + FILE_SIZE_BLKS)) "CONTROL_FILE_SIZE (BYTES)" from sys.v_$controlfile;

CONTROL_FILE_SIZE (BYTES)
-------------------------
19415040


$ ls -slrt [path_to_Controlfile]/cntrl0*
18984 -rw-rw---- 1 oracle dba 19415040 Jul 21 02:56 [path_to_Controlfile]/cntrl03.dbf
18984 -rw-rw---- 1 oracle dba 19415040 Jul 21 02:56 [path_to_Controlfile]/cntrl02.dbf
18984 -rw-rw---- 1 oracle dba 19415040 Jul 21 02:56 [path_to_Controlfile]/cntrl01.dbf


Note: 1 block needs to be added to the file_size_blks to allow for the file header.

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