Some FAQ'S about timesten?

Question

Hi all,
i m having some basic doubts pls let me know if anybody knows abt this since i m beginner i want to know these.
1.)what is timesten password?
2.)is it neccessary that oracle username and timesten account id both are same?
3.)what is the timesten default port for make entry in tnsnames.ora?
4.)where will be the user creates if we give
command>create user <username> identified by <pwd> (in oracle or timesten cache)
5.) how is timesten works?
suppose my environment is webcache-->app.server-->database
in this architecture where i have to install timesten and how to i configure it?
6.) is it comes after app.server before oracle or where?
7.)what is system.odbc.ini file do and where it is?
8.)what we have to check in odbc.ini file?
pls let me know i have go through some documents but i cant understand fully that docs are which i have gone is not well enough..thanks in advance
Regards & Thanks
M.Murali...

Answer 1

All ofthis information is in the TimesTen documentation and also there are several tutorials on OTN. However, just to help get you started...
The firsth thing to understand is that TimesTen isa complete database in its own right. It is persistent, transactional and highly available and delivers very high performance. it can be used as 'the database' without any Oracle DB. When used as a cache for Oracle, you are effectively creating a Timesten database (we call it a datastore) and using it to cache some subset of the Oracle database. The TimesTen caching features can be (very loosely) thought of as a form of 'replication' between a TimesTen datastore and an Oracle database.
To briefly answer your specific questions:
1.) What is timesten password?
CJ&gt;&gt; TimesTen supports internal users 9which have passwords) just as Oracle DB does. The 'timesten password' is the password for a specific user that you have created in TimesTen.
2.) Is it neccessary that oracle username and timesten account id both are same?
CJ&gt;&gt; When using TimesTen cacheing then there needs to be at least 2 users (the cache admin user and the application user) who have the same userid in both TimesTen and oracle. Howeverm their passwords can differ between TimesTen and Oracle.
3.)what is the timesten default port for make entry in tnsnames.ora?
CJ&gt;&gt; As I explained in my reply to your other question, you do not use tnsnames.ora to connect to TimesTen (in this release). Connection informati9on for TimesTen datastroes is defined in the various .INI files (see later). TNSNAMES.ORA is needed to enable Timesten to connect to the Oracle DB for cache operations. In this case yiou are configuring it to allow a connection through to your backend Oracle DB.
4.)where will be the user creates if we give
command&gt;create user &lt;username&gt; identified by &lt;pwd&gt; (in oracle or timesten cache)
CJ&gt;&gt; As you might expect, if you run this command in Oracle (e.g. via SQL*Plus) then the user is created in oracle. If you run it in TimesTen (e.g. via ttIsql) then the user is created in TimesTen. In general you need to create appropriate users in both places so you will need to run the command in both places.
5.) how is timesten works?
suppose my environment is webcache--&gt;app.server--&gt;database
in this architecture where i have to install timesten and how to i configure it?
CJ&gt;&gt; This is a very simple question with many, potentially complex, answers. For this specific architecture, TimesTen would typically sit between the app. server and the 'database' (by which we mean Oracle DB). Furthermore, for best performance TimesTen would normally be installed on the actual app. server machine so that the app.server can use direct local connectivity to TimesTen. So, the diagram might typically look like this:
webcache -&gt; app.server | TimesTen -&gt; Oracle DB
6.) is it comes after app.server before oracle or where?
7.)what is system.odbc.ini file do and where it is?
CJ&gt;&gt; The sys.odbc.ini file is located in the directory &lt;TimesTen_instance_installation_dir&gt;/info. This file configures the parameters and connectivity information for all the TimesTen datastores (cache and non-cache) managed by this TimesTen instance. In order to create/use a TimesTen datastore you must configure the appropriate entries/values in this file.
8.)what we have to check in odbc.ini file?
CJ&gt;&gt; See above.