Oracle Distributed Systems by Charles Dye
By Charles Dye
Oracle presents many instruments for designing, constructing, administering, and securing disbursed database platforms. With those instruments, facts in a number of databases is offered simply as though it have been saved in one database. This e-book describes how one can use a number of databases and either Oracle8 and Oracle7 dispensed approach beneficial properties to top virtue. geared toward either DBAs and builders, it covers:
- Benefits and tradeoffs of disbursed database systems
How to put in and configure a disbursed method
How to take advantage of Oracle's networking items, SQL*Net and Net8, for disbursed processing
How vintage database layout innovations expand to allotted structures and especially to Oracle
Security issues for disbursed systems
How to configure and administer Oracle's dispensed database beneficial properties (read-only snapshots, multi-master replication, updateable snapshots, procedural replication, and clash solution)
This ebook covers either Oracle8 and Oracle7 syntax, contains a entire API reference for Oracle's integrated disbursed process programs (DBMS_REPACT, DBMS_SNAPSHOT), and springs with a diskette containing a wealth of beneficial scripts and utilities.
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CMAN_PROFILE = (PARAMETER_LIST= (MAXIMUM_RELAYS=10240) (LOG_LEVEL=ADMIN) (TRACING=no) (RELAY_STATISTICS=no) (SHOW_TNS_INFO=no) (USE_ASYNC_CALL=yes) (AUTHENTICATION_LEVEL=0) (ANSWER_TIMEOUT=0) ) # CMAN_RULES defines where connections are accepted or rejected. 9. 7. ora: CMAN Section Parameter Name CMAN Description CMAN contains one or more addresses for the ports on which the connection manager is processing connection requests. You must specify the address parameters PROTOCOL, HOST, and PORT. 8.
6 Performance Several factors can affect performance in a distributed database. If the application references data over a database link, the performance of the network will have a direct bearing on performance. Replication components that utilize store-and-forward techniques, such as snapshots and multi-master replication, also exact their toll on overall system performance. If, for example, a snapshot master has a snapshot log, all DML on that table will cause a row-level trigger to fire that inserts records into the snapshot log.
At this point, the multi-threaded server processes and TNS listener are ready to accept connections. 0 - Production on 23-NOV-98 23:26:08 (c) Copyright 1997 Oracle Corporation. All rights reserved. com)) Services Summary... 166)(PORT=63458)) The command completed successfully The steps for handling connection requests with the multi-threaded server are as follows: 1. The client sends a connection request to the TNS listener's address. ora file, the Oracle Names server, or another name server. 2.