#Oracle ORA-00600: internal error code, arguments: [ktbdchk1: bad dscn]

By | November 2, 2021
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Oracle 11g database with Data Guard active. A switch of the sites (from production to disaster recovery node) is done and all seems good. Suddenly one day after the switch (more than one month) the enterprise application using it cannot connect any-more (connection pool getting filled up). The underlying issue that causes this is reported… Read More: #Oracle ORA-00600: internal error code, arguments: [ktbdchk1: bad dscn] »

#Oracle: #SQL to get the latest executed queries in a schema

By | February 20, 2021
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I was trying to obtain the last executed query on an Oracle instance. Seems easy but I wanted also: to exclude the queries that are done by sys user as maintenance to focus on queries executed by a specific client type. The best way to do it is to use the V$SQLAREA system table. V$SQLAREA… Read More: #Oracle: #SQL to get the latest executed queries in a… »

#Twitter Card: ERROR: Fetching the page failed because other errors

By | February 16, 2021
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After some updates suddenly all the post I shared from Jetpack for WordPress had no valid Twitter card. After some mail exchanges with Jetpack support they assured me that all is good from their part. As instructed by them I was able to see that indeed Jetpack was correctly generating the Twitter Card. Still checking… Read More: #Twitter Card: ERROR: Fetching the page failed because other errors »

Add preview WEBP images on nautilus on #Fedora #Linux

By | February 15, 2021
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The new webp image standard is used a lot this days. Somehow Nautilius is not generating thumbnails for this format automatically. To add support for this just do the following: STEP 1: Add support for the new image format. Create a new file /usr/share/thumbnailers/webp.thumbnailer with the following content. Also make sure totem player is installed,… Read More: Add preview WEBP images on nautilus on #Fedora #Linux »

#fintech Resources for understanding #SwiftMT and #ISO #payment messages

By | February 15, 2021
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Swift MT and ISO messages are the basic message formats used all across the financial world in most of the payment systems. Yes there are notable exceptions like NACHA or some country specific message formats but if you need to interface with or implement some payment system that at some point connects to SWIFT you… Read More: #fintech Resources for understanding #SwiftMT and #ISO #payment messages »