COGNOS Business Intelligence Series 7
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Appendix B: Batch Administration 108 Cognos PowerPlay (R)
Appendix C: Managing Temporary Files You can manage temporary file access for the CGI and PowerPlay Enterprise Server dispatcher processes in order to customize PowerPlay security in a Web deployment. Temporary File Modes The CGI and PowerPlay Enterprise Server dispatcher processes can use the temporary directory in one of three possible modes to provide maximum flexibility for directory privileges. Shared Temp The CGI and dispatcher processes share the PPWB_DIR directory. The CGI and dispatcher processes may be on the same or different machines, but still use a shared PPWB_DIR. This is the default mode. The CGI process does not attempt to write temporary files when honoring requests in this mode. It will only read files created by the dispatcher. CGI Temp This mode requires that the CGI process have write privileges to a temporary directory. This is the only mode that requires the system administrator to give the Web server write privileges to the temporary directory. The ppdscgi.conf file must contain an entry for PPWB_DIR. If the entry is missing, the CGI process will default back to the Shared Temp mode. Use Configuration Manager to set this property. CGI Temp mode offers good performance, but should not be used in deployments requiring the highest levels of Web server security. Dispatcher Temp This mode does not require the CGI process to have write privileges to the temporary directory. The dispatcher programs called by a CGI process control the temporary directory. The CGI process fetches the results from files that the dispatcher creates and manages. Dispatcher Temp mode offers high security at some cost in performance. Tip: You can turn on fetch temporary files for a given dispatcher with Configuration Manager. Temporary File Access Configuration Temporary file access modes can be set within the Configuration Manager using the Temporary File Access property. Values relating to the PPWB_DIR location are shown below. Value Dispatcher CGI Shared Description Only the dispatchers have read/write privileges for the directory. The CGI program has read/write privileges for the directory. The CGI and dispatcher programs share the directory. The CGI program reads and the dispatcher program writes to the directory. Enterprise Server Guide 109
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Appendix C: Managing Temporary Files<br />
You can manage temporary file access for the CGI and PowerPlay Enterprise Server dispatcher<br />
processes in order to customize PowerPlay security in a Web deployment.<br />
Temporary File Modes<br />
The CGI and PowerPlay Enterprise Server dispatcher processes can use the temporary directory in<br />
one of three possible modes to provide maximum flexibility for directory privileges.<br />
Shared Temp<br />
The CGI and dispatcher processes share the PPWB_DIR directory. The CGI and dispatcher<br />
processes may be on the same or different machines, but still use a shared PPWB_DIR. This is the<br />
default mode. The CGI process does not attempt to write temporary files when honoring requests<br />
in this mode. It will only read files created by the dispatcher.<br />
CGI Temp<br />
This mode requires that the CGI process have write privileges to a temporary directory. This is the<br />
only mode that requires the system administrator to give the Web server write privileges to the<br />
temporary directory. The ppdscgi.conf file must contain an entry for PPWB_DIR. If the entry is<br />
missing, the CGI process will default back to the Shared Temp mode. Use Configuration Manager<br />
to set this property.<br />
CGI Temp mode offers good performance, but should not be used in deployments requiring the<br />
highest levels of Web server security.<br />
Dispatcher Temp<br />
This mode does not require the CGI process to have write privileges to the temporary directory.<br />
The dispatcher programs called by a CGI process control the temporary directory. The CGI<br />
process fetches the results from files that the dispatcher creates and manages.<br />
Dispatcher Temp mode offers high security at some cost in performance.<br />
Tip: You can turn on fetch temporary files for a given dispatcher with Configuration Manager.<br />
Temporary File Access Configuration<br />
Temporary file access modes can be set within the Configuration Manager using the Temporary<br />
File Access property.<br />
Values relating to the PPWB_DIR location are shown below.<br />
Value<br />
Dispatcher<br />
CGI<br />
Shared<br />
Description<br />
Only the dispatchers have read/write privileges for the directory.<br />
The CGI program has read/write privileges for the directory.<br />
The CGI and dispatcher programs share the directory. The CGI program reads<br />
and the dispatcher program writes to the directory.<br />
Enterprise Server Guide 109
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