There had been some stories which implied that Amazon was having some difficulty trying to escape the clutches of Oracle licensing.

However, Amazon Web Services CEO Andy Jassy said by the end of this year, almost all of Amazon's databases that ran on Oracle will be on an Amazon database.

He said: "We're virtually done moving away from Oracle on the database side, and I think by the end of 2019 or mid-2019 we'll be done."

Jassy said 88 percent of Amazon databases that were running on Oracle will be on Amazon DynamoDB or Amazon Aurora by January.

He added that 97 percent of "mission critical databases" will run on DynamoDB or Aurora by the end of the year. On 1 November. Amazon moved its data warehouse from Oracle to its own service, Redshift, Jassy said.

Jassy laid out AWS’ updated database portfolio, saying: “I can assure you enterprises are singing.”

He said, “The old world has been a miserable world in the last couple of decades for enterprises” that have had to work with “old guard databases like Oracle”.

He complained that companies such as Oracle and Microsoft were “abusive” to customers, constantly auditing and fining them for compliance breaches. “Overnight, if Oracle decides it wants to double the cost, that’s what they do. Microsoft decides something that’s good for them but not good for you. People are sick of it.”

In response, AWS has beefed up its own database portfolio. It announced new features to its relational database Amazon Aurora and its key-value database Amazon DynamoDB. In addition, it announced two new purpose-built databases.