Description:
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Many applications use CLOBs for storing not very big data, but more than varchar2 can store. For such applications it isn't handy to deal with streams.

Also sometimes it's impossible for table with CLOB column to do $stmt->fetchAll(), because the number of simultaneously opened LOBs is limited in a database (300 in Oracle by default) and only one correct way is to do $stmt->fetch() in a loop and check if a column is resource.

I request to add a fetching mode when PDO loads every LOB in a cursor automatically in its C++ code. PHP code will look like this:

$result = $stmt->fetchAll(PDO::FETCH_ASSOC | PDO::LOB_AUTO_LOAD);