Hello guys, if you are preparing for Oracle or PL/SQL Job or a Developer job where PL/SQL skills are needed and looking for frequently asked PL/SQL Interview Questions then you have come to the right place. Earlier, I have shared both best PL/SQL courses and best PL/SQL books and in this article, I am going to share popular PL/SQL Interview Questions you can revise before your interview. Preparing for PL/SQL Interview is not a rocket science and you can prepare for it the same way you prepare for other interviews.
Top 20 Oracle Database Interview Questions with Answers for 3 to 5 Years Experienced
Hello guys, if you are a developer or a database administrator and preparing for Oracle database interview and need common Oracle database questions for 1 to 5 years experienced then you have come to the right place. Earlier, I have shared tricky SQL query interview questions as well as popular database interview questions and in this article, I am going to share popular Oracle interview questions with answers. If you have used Oracle database for a couple of years or worked as Oracle database administrator then most likely you will know answers of all these questions but if you struggle to answer them then you can always go back and checkout these best Oracle database online courses to learn and revise key Oracle database concepts.
[Solved] Caused by: java.sql.SQLSyntaxErrorException: ORA-01722: invalid number in Java and Oracle
Hello guys, if you are getting below error in your Java program and wondering how to solve this or just stuck then you have come to the right place. In this article, I will explain to you what causes the " java.sql.SQLSyntaxErrorException: ORA-01722: invalid number" error when you connect to an Oracle database from a Java program and how you can solve it.
But, first of all, let's take a look at the stack trace of this error which looks like below:
JDBC - How to connect Eclipse to Oracle Database - Step by Step Guide Example
Though I prefer Toad or Oracle SQL Developer tool to connect Oracle database, sometimes it's useful to directly connect Eclipse to Oracle using JDBC using its Data Source Explorer view. This means you can view data, run SQL queries to the Oracle database right from your Eclipse window. This will save a lot of time wasted during switching between Toad and Eclipse or Oracle SQL Developer and Eclipse. Eclipse also allows you to view the Execution plan in both text and Graphical mode, which you can use to troubleshoot the performance of your SQL queries.
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