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Question and Answer

Chris Saxon

Thanks for the question.

Asked: December 31, 2004 - 3:40 pm UTC

Last updated: October 11, 2017 - 1:01 pm UTC

Version: 9

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You Asked

i am not well verserd with linux ..i know that we have to write "sqlplus" on the comand prompt in linux to open sql*plus application...is there any place from where i can know how to open other (oracle) applications in linux like "oralce enterprise manager" and other oracle applications or can you tell me please..

and Tom said...

you'd have to ask about specific applications -- but oem is "oemapp console"


[ora9ir2@localhost ora9ir2]$ oemapp
Usage: oemapp <application name>
The installed applications are: txtmgr, worksheet, ocmcli, dbastudio, console, esmsrv, opm, cpta, jdbctest, oemutil, topsess, dataguard, ocm, lmviewer, cp, sdoadvisor, esm, pm





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Comments

reader

A reader, December 31, 2004 - 5:43 pm UTC

THANKS a lot...and may i know what is this cp and pm you have written above


Regards
sachin

RE: oemapp cp and pm

Mark A. Williams, December 31, 2004 - 7:02 pm UTC

Not Tom here, but "cp" is the capacity planner and "pm" is the performance manager.

HTH,

Mark

graphical linux tool for oracle

Antonie Kriek, January 03, 2005 - 2:29 am UTC

hi

have a look at this tool - i use it on a daily basis and its brilliant for oracle on linux...

</code> http://www.globecom.net/tora/ <code>

Tom Kyte
January 03, 2005 - 8:37 am UTC

$ sqlplus /

it is brilliant for oracle on any platform :)

question

A reader, September 16, 2005 - 12:06 pm UTC

Hi,

I have Oracle 9.0.4 installed on rh linux 9.

I was trying to use TOra. The "Oracle" connection provider is not available in TOra.
I am able to connect MySql from TOra. but not Oracle.

How can I configure TOra, ODBC or any other configuration related this in Linux.

please help.

Thanks.


Tom Kyte
September 16, 2005 - 2:00 pm UTC

no idea, never used tora

To get TORA working ...

David Woodard, September 16, 2005 - 3:52 pm UTC

on Linux, you need both the tora*.rpm AND the tora-oracle*.rpm

You can still get the free version of TORA from SourceForge:
</code> http://sourceforge.net/project/showfiles.php?group_id=16636

If you are running RH 9, looks like you will need the 1.3.15 version, as they only have 1.3.16 for RHEL 4.

When installing the tora-oracle*.rpm, you may get an error stating that "libclntsh.so" is missing as a prereq.  If you are planning to just point your environment to an installed ORACLE_HOME, you can tell RPM to skip the dependency check with the "--nodeps" flag (that is assuming libclntsh.so was the ONLY prereq that was missing)

By the way, if you are doing PL/SQL development and need an IDE & PL/SQL debugger, JDeveloper from Oracle does that, and it's now free.  See the announcement here:
http://www.oracle.com/technology/products/jdev/htdocs/jdevpricefaq.html#1 <code>
I've been playing with it, and it has a small learning curve like anything else that's new to you, but it looks good.

Hope that helps

Tom Kyte
September 16, 2005 - 3:54 pm UTC

Thanks David.

THANKS

A reader, September 16, 2005 - 4:33 pm UTC

thanks a lot David and Tom...will try that ....:)

reader

A reader, January 23, 2006 - 5:16 pm UTC

Hi

i have linux 9 rh and oracle 9.2


i start up windowz and directly launch sql*plus tool... it just asks for the username and password..and then i am good to go ,because the database is running as a service at the back end.

but on linux I log on as oracle user,do the following:


>sqlplus /nolog
>connect / as sysdba
>startup

then it starts up and i am good to go.....


question--is there a way to work on linux as i am doing in windowz like just entering the username and password and not to "start up the database" every time i start system...

Tom Kyte
January 23, 2006 - 11:08 pm UTC

do you know about /etc/init.d and how to configure that sort of stuff?

A reader, January 11, 2010 - 7:26 pm UTC

Sir;
Even Im the only active session in the database.

When I check the user datafile, I see that it is being used by some other process.
How can this happen?

fuser /oracle/u01/oradata/orcl/users01.dbf
/oracle/u01/oradata/orcl/users01.dbf: 1388o 1382o 1380o 1378o 1376o



Tom Kyte
January 18, 2010 - 12:31 pm UTC

you are never the only session in the database. Look at v$session, you'll find many others.

We have our own sessions, smon, pmon, etc - they all do things in the background, smon regularly queries and modifies data - constantly.

A reader, January 18, 2010 - 6:10 pm UTC

But sir, this is not a datafile of the system tablespace.
I was thinking that there is always activity in system datafiles which are managed by oracle background processes.



Tom Kyte
January 19, 2010 - 4:12 pm UTC

there is always activity in the database.

You are never alone - never.

They can be doing things in many tablespace (think of statistics gathering, think of AWR data collection/preservation, etc etc etc)


and even if you are the only ACTIVE session, there could be (you don't say) dozens of currently inactive sessions that have files open. It is normal.

If you are curious as to what has that file open - read about lsof, ls open files. You can see who has it open.

A reader, February 02, 2010 - 4:29 pm UTC

Thanks for enlightening me sir;

There is always activity in oracle therefore SCN increments every commit.
What kind of actions does oracle do in background so SCN is
increasing every second? It never hangs or stops.
Therefore somethings should be done every seconds..
I am just wondering what kind of things oracle is doing every second.

(AWR is generally taken once an hour, so this is not the case)
Tom Kyte
February 03, 2010 - 9:32 am UTC

smon does lots of cleanup work, coalesce tablespaces, recover failed operations, etc - all of which update the dictionary. The job queues run and update themselves. AQ is going. etc etc etc.


AWR is going too - as well as things like table monitoring and many other bits of monitoring.


A reader, February 11, 2010 - 4:57 pm UTC

Does smon also do coalesce for LMT tablespaces periodically?
Tom Kyte
February 16, 2010 - 11:05 am UTC

does not need to, one of the attributes of a locally managed tablespace is that they never need coalescing - they are managed by bitmaps. If you have a series of "zeroes" we know that is free space. There is no need to combine rows like there used to be with UET$ and FET$ (used extent/free extent) tables.

A reader, February 21, 2010 - 5:44 pm UTC

Thanks sir;

Since contigues extents are not coalesced automically.
When I look dba_free_space to find wheter there is big enough contigues blocks to satisfy next extent size of my table,
I notice that the information may mislead me since extents in dba_free_space may be contigues.

Am I right?

Tom Kyte
March 01, 2010 - 5:43 am UTC

I feel like I'm going around in circles on this one


In a locally managed tablespace, extents are - by the very method we organized them in the bitmap file header - ALWAYS coalesced, there is no manual or 'psuedo automagic' coalescing necessary. They are ALWAYS coalesced.

In legacy dictionary managed tablespaces, we DO automagicially coalesce them (smon does- as does the process of attempting to allocate space).

Rucksana, October 11, 2017 - 6:50 am UTC

Hey,
I want to create a report in oracle apex which attribute will be comments.
and i also want to a inner comments box . So how can i create it?

Chris Saxon
October 11, 2017 - 1:01 pm UTC

I've no idea what you're trying to do.

I also don't know how this relates to the original question...