Oracle 多端口多监听配置
[oracle@localhost admin]$ more listener.ora# listener.ora Network Configuration File: /oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /oracle/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
)
SID_LIST_LISTENER2 =
( SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = Ora10)
(SID_NAME = orcl)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 108.88.3.93)(PORT = 1522))
)
)
LISTENER2 =
( DESCRIPTION =
(ADDRESS = (HOST = 108.88.3.93)(PROTOCOL = TCP)(PORT = 1523))
)
[oracle@localhost admin]$
[oracle@localhost admin]$ lsnrctl
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 10-DEC-2015 06:05:37
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> start LISTENER2
Starting /oracle/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /oracle/app/oracle/product/10.2.0/db_1/network/log/listener2.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=108.88.3.93)(PORT=1523)))
Connecting to (DESCRIPTION=(ADDRESS=(HOST=108.88.3.93)(PROTOCOL=TCP)(PORT=1523)))
STATUS of the LISTENER
------------------------
Alias LISTENER2
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 10-DEC-2015 06:05:44
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /oracle/app/oracle/product/10.2.0/db_1/network/log/listener2.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=108.88.3.93)(PORT=1523)))
Services Summary...
Service "Ora10" has 1 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL> status LISTENER2
Connecting to (DESCRIPTION=(ADDRESS=(HOST=108.88.3.93)(PROTOCOL=TCP)(PORT=1523)))
STATUS of the LISTENER
------------------------
Alias LISTENER2
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 10-DEC-2015 06:05:44
Uptime 0 days 0 hr. 0 min. 8 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /oracle/app/oracle/product/10.2.0/db_1/network/log/listener2.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=108.88.3.93)(PORT=1523)))
Services Summary...
Service "Ora10" has 1 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>

tostartaphpsession,usesesses_start()attheScript'Sbeginning.1)placeitbeforeanyOutputtosetThesessionCookie.2)useSessionsforuserDatalikeloginstatusorshoppingcarts.3)regenerateSessiveIdStopreventFentfixationAttacks.s.4)考慮使用AttActAcks.s.s.4)

會話再生是指在用戶進行敏感操作時生成新會話ID並使舊ID失效,以防會話固定攻擊。實現步驟包括:1.檢測敏感操作,2.生成新會話ID,3.銷毀舊會話ID,4.更新用戶端會話信息。

PHP会话对应用性能有显著影响。优化方法包括:1.使用数据库存储会话数据,提升响应速度;2.减少会话数据使用,只存储必要信息;3.采用非阻塞会话处理器,提高并发能力;4.调整会话过期时间,平衡用户体验和服务器负担;5.使用持久会话,减少数据读写次数。

PHPsessionsareserver-side,whilecookiesareclient-side.1)Sessionsstoredataontheserver,aremoresecure,andhandlelargerdata.2)Cookiesstoredataontheclient,arelesssecure,andlimitedinsize.Usesessionsforsensitivedataandcookiesfornon-sensitive,client-sidedata.

phpIdentifiesauser'ssessionSessionSessionCookiesAndSessionId.1)whiwsession_start()被稱為,phpgeneratesainiquesesesessionIdStoredInacookInAcookInAcienamedInAcienamedphpsessIdontheuser'sbrowser'sbrowser.2)thisIdallowSphptpptpptpptpptpptpptpptoretoreteretrieetrieetrieetrieetrieetrieetreetrieetrieetrieetrieetremthafromtheserver。

PHP會話的安全可以通過以下措施實現:1.使用session_regenerate_id()在用戶登錄或重要操作時重新生成會話ID。 2.通過HTTPS協議加密傳輸會話ID。 3.使用session_save_path()指定安全目錄存儲會話數據,並正確設置權限。

phpsessionFilesArestoredIntheDirectorySpecifiedBysession.save_path,通常是/tmponunix-likesystemsorc:\ windows \ windows \ temponwindows.tocustomizethis:tocustomizEthis:1)useession_save_save_save_path_path()


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