PL/SQL Developer 11.0 64 bit released

System requirements

PL/SQL Developer 11.0 64 bit can run on any 64 bit Windows system  and is compatible with all Oracle Server versions. To connect to an  Oracle database you need to have a 64 bit Oracle11g or Oracle12c Client  installed.

Upgrading from a 32 bit version

The file formats of the 32 bit and 64 bit PL/SQL Developer versions are  fully compatible. All files (SQL scripts, Programs, Reports, Diagrams,  and so on) can be shared between the 32 bit and 64 bit versions. When  using both versions on the same system all preferences and settings will  also automatically be shared. To run both PL/SQL Developer 32 bit and 64 bit on the same 64 bit Windows  system you need to install both a 32 bit and 64 bit Oracle Client. If  you have full Oracle Client installations PL/SQL Developer will  automatically find the correct 32 bit or 64 bit client in the registry.  If however you have an Oracle Instant Client installation you may need  to perform the following actions: Modify the PL/SQL Developer shortcut to add the InstantClient=<directory>  parameter to indicate the directory where the instant client files  are located. For example: "C:\Program Files\PLSQL Developer\plsqldev.exe"  InstantClient=C:\Oracle\InstantClient64 or: "C:\Program Files (x86)\PLSQL Developer\plsqldev.exe"  InstantClient=C:\Oracle\InstantClient32 Create a TNS_ADMIN environment variable to indicate the  directory where the tnsnames.ora file is located. For example: TNS_ADMIN=C:\Oracle\Network\Admin Create an NLS_LANG environment variable to indicate the  language, territory and character set. For example: NLS_LANG=AMERICAN_AMERICA.WE8MSWIN1252 The TNS_ADMIN and NLS_LANG environment variables are shared between  the 32 bit and 64 bit Oracle Client.

Plug-Ins

The Plug-Ins  provided on our web site  are all 32 bit and can therefore only be used with the 32 bit version of  PL/SQL Developer. The 64 bit package includes a 64 bit version of the  standard Plug-Ins, and 64 bit versions of other Plug-Ins will be provided in  the future.