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11-2 Publishing Reports to the Web with Oracle Reports Services

11.2 PDF Features Included in Oracle Reports

Oracle Reports supports PDF 1.4 and is capable of generating high fidelity PDF reports on all platforms. The PDF features supported by Oracle Reports include: ■ Compression ■ Font-Related Features ■ Precedence of Execution ■ Encryption, Password Protection, and Permissions Security ■ Accessibility ■ Taxonomy ■ Graph Support

11.2.1 Compression

PDF compression decreases the PDF file size, thereby reducing the time spent in downloading the PDF file. The amount of space saved using compression varies based on the contents of the report, for example, the number of images versus the size of the content. ■ Images : PDF compression does not significantly affect the size of files containing images in it, as image files are typically already compressed. ■ Formatted data : Highly formatted data can achieve higher compression rates. However, actual compression rates will vary for each report. Compressed files are about one fifth the size of the original file. Testing has shown that the best case compression ratio of one-eighth to the worst case compression ratio of one-half was achieved based on the contents in the original file. Support for all character sets in PDF. With the new font model, no misalignment will be seen in the PDF subsetted report output. Support for Unicode font subsetting in PDF on UNIX. Only multibyte reports supported. PFM and PFA files must be created to resolve text misalignments in UNIX output. Dependence on AFM files. Variable width font output was especially problematic, because Reports was unable to get width of characters beyond the first 256 characters in the file, and assumed fixed width for all these characters, resulting in misalignment. Simplified font management and configuration through Oracle Enterprise Manager. Use Oracle Enterprise Manager to modify aliasing and subsetting entries in uifont.ali such as global aliasing, PDF aliasing, and PDF subsetting. Defalut Resolution, and Default Font to modify the PPD file. Configure fonts in uifont.ali and configuration files. PDF, password protection, and security. Specify new command line arguments to password-protect PDF reports generated from Oracle Reports. You can also suppress certain permissions to provide security for the generated PDF reports. No capability to encrypt PDF reports or specify security permissions. Font diagnostics. Easy to understand tracing for diagnosis of font issues. Reporting of fonts used, and other debugging tools. Difficult to diagnose issues. Table 11–1 Cont. 11g Font Features vs. 10g Functionality 11g New Features Equivalent 10g Functionality