No, Software Engineering is not a suitable place.
Advice regarding career or education are usually very personal and can't be answered well with the Stack Exchange question & answer model. See also: Why was my question closed as "Off Topic - Career or Educational Advice?"
We're not a good place for getting recommendations for books or resources. Any answers would be based in opinion, which is not a good fit for the Stack Exchange Q&A model. Furthermore, recommendations don't tend to age well. While you have asked about a rather stable technology, tech generally has very short cycles. Learning material might already be outdated within a few years. This conflicts with the goal to build a library of questions and answers that helps other people, not just the person asking the question. See also: Why was my question closed as "Off Topic - Requests for Recommendations?"
These reasons are not specific to the Software Engineering site but are largely based on the Stack Exchange model that values long-lasting, objective answers. The same reasons would apply when asking on Stack Overflow. Instead, you might be able to find another site or community that welcomes such questions. For example, recommendations for current learning resources might be on topic in a community or forum specifically about PL/SQL. Reddit is usually a good place for this kind of question, though it's r/PLSQL community seems rather deserted, unfortunately.