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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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Customising SQL Prompt in pre-10g Oracle Homes

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I always say that the risk of running a script in an instance wherein it is not meant to be run, is always high, if the SQL prompt in SQL*PLUS is unchanged i.e., if it is retained as "SQL>". This risk can be mitigated, to a great extent, if not fully, by customising the SQL prompt to something like ' USER@SID> '. This can be achieved in Oracle 10g quite easily (refer my earlier post ). Releases prior to Oracle 10g did not have the special pre-defined variable "_USER", which can be set in glogin.sql. However, there exist a lot of workarounds for customising the SQL Prompt and retaining it! I have detailed below one such workaround. 1. Modify the .profile of each user and add the environment variable SQLPATH to it so that our scripts can be accessed from anywhere. e.g: export SQLPATH=/u019/app/oracle/govtt/govttora/8.0.6/sqlplus/admin;/u018/app/oracle/govtt/govttdb/9.2.0/sqlplus/admin 2. Create two files login.sql and connect.sql under $ORACLE_HOME/sql
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Customising SQL Prompt in 10g Database/Oracle Home

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Many a time, DBAs and Developers tend to run scripts, accidentally, in instances that they do not actually intend to. In extreme cases, this might result in disastrous consequences, sometimes even leading to recovering/restoring the database from a backup. This mistake can easily be avoided if the sql prompt displays the username and/or the SID in lieu of just "SQL>". Whenever sqlplus is invoked, 2 files are executed: glogin.sql and login.sql (if it exists) in the order mentioned. These 2 files are located under $ORACLE_HOME/sqlplus/admin . Modify the file glogin.sql and add the below line: set sqlprompt " _user'@'_connect_identifier > " The net result of this is that the sqlprompt will appear as below whenever you login to sqlplus: system@ORCL > where system is the username and ORCL is the SID. Note: One drawback of this method, if it may be called so, is that whenever one logs in to sqlplus using /nolog option, only the '@' character
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Solution to "End Program - WMS Idle"

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Though this topic is unrelated any Apps DBA topics, I found it necessary to share the solution so that everyone benifits out of it ! Issue: I used to receive the below error message whenever I tried to shutdown windows XP. A rather vexing problem, no doubt. Cause: This message appears because when windows is trying to shutdown and end all the running processes, the WMS idle process keeps working. Thus an end-program message appears. The two most common reasons for this are: Scout service run by Nero 7 Microsoft Office Communicator 2005 Solution: The fix is simple, disable the Nero 7 scout service if it is enabled. For this, go to Start > All Programs > Nero > Tools > Nero Scout . On this screen , Uncheck Enable the Nero scout. This will fix the issue for most of the users, for the rest of you who are not using Nero are most probably getting this error because of Microsoft Office Communicator 2005. For that you need to either manually exit the communicator 2005 from the s
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Modify retention period of workflow queues

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Yesterday, there was a requirement to increase the retention period of WF_DEFERRED and WF_BPEL_Q so that the developers could troubleshoot issues involving business events. This can be done this way: 1. Check the retention period of existing workqueues. SQL> SELECT owner, name, retention FROM all_queues WHERE name LIKE 'WF%'; OWNER           NAME                                                RETENTION --------------- --------------------------------------------- ------------------------------ APPS                 WF_BPEL_Q                                                0 APPLSYS         WF_INBOUND_QUEUE                             0 APPLSYS         WF_OUTBOUND_QUEUE                          0 APPLSYS         WF_SMTP_O_1_QUEUE                           0 APPLSYS         WF_DEFERRED_QUEUE_M                        0 APPLSYS         WF_DEFERRED                                            0 APPLSYS         WF_ERROR                                           0 AP
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Check if UTL_FILE and FND_FILE are working fine

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Yesterday, while troubleshooting a vexing ORA-29280 error, I came across 2 useful PL/SQL anonymous blocks that can be used to test FND_FILE and UTL_FILE to find out whether they are indeed working fine. UTL_FILE set serveroutput on DECLARE file_location VARCHAR2(256) := '<first entry on utl_file_dir>'; file_name VARCHAR2(256) := 'utlfile1.lst'; file_text VARCHAR2(256) := 'THIS IS A TEST'; file_id UTL_FILE.file_type; BEGIN file_id := UTL_FILE.fopen(file_Location, file_name, 'W'); UTL_FILE.put_line(file_id, file_text); UTL_FILE.fclose(file_id); EXCEPTION WHEN UTL_FILE.INVALID_PATH THEN dbms_output.put_line('Invalid path ' || SQLERRM); WHEN OTHERS THEN dbms_output.put_line('Others '|| SQLCODE || ' ' || SQLERRM); END; / References: Metalink (MOS) Note ID: 261693.1 FND_FILE set serveroutput on exec FND_FILE.PUT_LINE(FND_FILE.LOG, 'THIS IS A TEST'); HTH.
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