We are working on a 10.0.x 64 Bit version now, bit do not yet have a date. The easiest way to add a 32 Bit Oracle Client: • Download the Oracle 11g or 12c. • Create an 'InstantClient' subdirectory in the PL/SQL Developer installation directory. • Unzip the downloaded instant client into this directory. • Define a TNS_ADMIN environment variable and set it to the directory where the tnsnames.ora file of your 64 Bit Oracle Client is located (e.g. C: Oracle product 11.2.0 client_1 network admin).

• Define an NLS_LANG environment variable and set your language, territory and character set (e.g. To set environment variables you can start the Windows Control Panel, click on 'System', 'Advanced system settings', 'Environment Variables'. I don't understand why is it so important to have a 64bit PL/SQL Developer? 4Gigs of RAM isn't enough for your daily work, or something else?

Because I do not see any reason for such a software (web browser, mail client, office, pl/sql developer, etc) to be a native 64bit application. Video editing, and some very special tasks, where a 4GB memory is a limit, and using 8-16Gb could be much faster, but otherwise, it is not important. On the other hand, it is better, if the application is a 32bit app, and it means, that memory leaks, flash player, or javascript errors cannot kill the whole machine.

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I had such memory problems with some websites, and with many opened tabs, and Firefox startet to allocate 3Gigs of memory, it died later, but my PC with 8Gigs of RAM didn't noticed anything. If it were a 64bit app, it could use all the 8Gig memory, making the whole PC unusable. (As it was with Chrome, because chrome launches all browser tabs in a separate process, and this 4Gig limit applies by process). #48971 - 05/06/14 09:05 PM Re: PL/SQL Developer 64 bit? [] Member Registered: 02/11/13 Posts: 235 Loc: UTC+10.