Oracle Database Documentation Bookmarklets:

• OraDocs Global Search across all documentation.

• OraDocs 11gR1 Search the 11g Release 1 (11.1) documentation library.

• OraDocs 10gR2 Search the 10g Release 2 (10.2) documentation library.

• OraDocs 10gR1 Search the 10g Release 1 (10.1) documentation library.

• OraDocs 9iR2 Search the 9i Release 2 (9.2) documentation library.

• OraDocs 9iR1 Search the 9i Release 1 (9.0.1) documentation library.

• OraDocs 8iR3 Search the 8i Release 3 (8.1.7) documentation library.

Oracle Resources Bookmarklets:

• Oracle (SES) Search OTN, docs, blogs and more using the Oracle Enterprise Search.

• Metalink Search Metalink.

• AskTom Search asktom.oracle.com.

• OTN Forums Search the OTN Forums.

• Oracle-l Search the Oracle-l mailing list archives.

For more details please read this post.