Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Manuel d'utilisateur télécharger pdf (Page 60)

IWSSessionManager

60 iPlanet Web Server, Enterprise Edition Programmer’s Guide to Servlets • May 2001

• provider - the JDBC driver (the default is sun.jdbc.odbc.JdbcOdbcDriver).

For more information about the JDBC API, see the following web site:

http://java.sun.com/products/jdbc/index.html

• url - the data source (the default is jdbc:odbc:LocalServer).

•

table - name of the SQL table that store sessions (the default is sessions).

•

username - the login username for the database.

•

password - the login password for the database.

•

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).

•

timeOutColumn - the name of the column that holds the session timeout in

minutes (the default name is

TimeOut). 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).

NOTE The

JdbcStore class does not recognize JDBC driver classes

assigned to the

classpath attribute of the class-loader element

web-apps.xml. Assign them to the jvm.classpath variable in

the

jvm12.conf file instead. For more information, see Appendix C,

“JVM Configuration.”

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