- If you're planning to use the sqlplus tool as your interface, you're not going to be able to pass arrays in and out of Oracle. You'll have to do a bunch of text munging to create the appropriate scripts and parse the returned data files. That's just too much work. I expect that you'll have better luck if you try using DBI and DBD::Oracle (or one of the other modules that let you work with Oracle databases.)
- I've not directly used the array types in Oracle, nor have I played with nested tables. While perusing the documentation for DBD::Oracle, there's a section named "SYS.DBMS_SQL datatypes" where they show some examples that you may be able to adapt.
- If you try DBI and DBD::Oracle, be sure to read section "Placeholders and Bind Values" in the DBI documentation. Using placeholders is pretty easy, and it's the best way to interface with the database: You avoid various quoting issues, security issues, etc.
When your only tool is a hammer, all problems look like your thumb.
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