Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Manuale Utente Pagina 68
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Deprecated Session Managers
68 iPlanet Web Server, Enterprise Edition Programmer’s Guide to Servlets • May 2001
• reaperActive - tells the session manager whether to run session reaper to
remove expired sessions from the database when
true, which is the default
value. It is recommended that only one server in the cluster be running the
reaper.
•
accessTimeColumn - the name of the column that holds the last access time in
minutes (the default name is
AccessTime). The SQL type is NUMERIC(9).
•
sessionIdColumn - the name of the column that holds the session ID (the
default name is
SessionID). The SQL type is VARCHAR(100).
•
valueColumn - the name of the column that holds the session object (the
default name is
Value). The SQL type is VARBINARY(4096). This column must
be large enough to accommodate all your session data.
Each type of operation on the database that handles session information (looking
up, inserting, updating, and deleting) is performed by a corresponding dedicated
connection. Each of these connections has a precompiled SQL statement for higher
performance. The following parameters allow you to customize the number of
dedicated connections that perform each of the operations.
•
lookupPool - the number of connections that perform lookup operations (the
default is 4 connections).
•
insertPool - the number of connections that perform insert operations (the
default is 4 connections).
•
updatePool - the number of connections that perform update operations (the
default is 4 connections).
•
deletePool - the number of connections that perform delete operations (the
default is 2 connections).
Enabling JdbcSessionManager
You may want to enable JdbcSessionManager to change its default parameters.
You can also enable
JdbcSessionManager for a particular context if the server is
running in single process mode. To enable iPlanet Web Server to use
JdbcSessionManager, do any of the following:
• Use the Legacy Servlets>Configure Global Servlet Attributes page in the Server
Manager interface.
In the Session Manager field specify:
com.netscape.server.http.session.JdbcSessionManager
You can also specify parameters for the session manager in the Session
Manager Args field, for example:
- Version 6.0 1
- Contents 3
- Contents 5 5
- About This Book 7
- Servlets and JavaServer Pages 9
- Servlets 10
- JavaServer Pages 10
- Web Applications 13
- Dynamic Reconfiguration 14
- Example server.xml File 16
- Example web-apps.xml File 18
- /intl/encoding.doc.html 22
- Web Application Examples 29
- Using Servlets 31
- Using the User Interface 32
- Enabling Servlets 32
- The <SERVLET> SHTML Tag 33
- Servlet Output 34
- Configuring JVM 35
- Using JavaServer Pages 37
- Configuring JRE/JDK Paths 39
- Enabling JSPs 42
- Deleting Cache Version Files 42
- The JSP Command-Line Compiler 43
- Compiler 46
- Debugging Servlets and JSPs 49
- JSP Debugging 50
- JPDA Options for Debugging 53
- Session Managers 55
- Specifying a Session Manager 56
- IWSSessionManager 58
- Enabling IWSSessionManager 61
- /net/dotcom.com/sessions 62
- Parameters 63
- Enabling MMapSessionManager 63
- Deprecated Session Managers 65
- JdbcSessionManager 66
- Enabling JdbcSessionManager 68
- API Clarifications 71
- <vs> 72
- </vs> 72
- HttpServlet.service 73
- ServletContext.getAttribute 73
- ServletRequest.setAttribute 73
- ServletRequest.getParameter 74
- Clarification 75
- Other Useful Information 77
- Legacy Servlet and JSP 79
- Configuration 79
- Enabling Servlets and JSP 80
- Virtual Servlet Path Example 84
- Legacy Configuration Files 87
- Legacy Examples 93
- Appendix A 95
- Objects in obj.conf 96
- JSP Directives 98
- Converting SSJS Applications 99
- JavaScript Java 100
- Conversion Steps 102
- Example Conversion 103
- JVM Configuration 105
- Remote Servlet Profiling 113
- The HPROF Profiler 114
- Index 119 119
- Index 121 121
- Index 123 123
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