Double cursor read of database

Hi,
What is meant by double cursor read select statements.
Can u please provide specific examples?

Are you sure you don't mean "parallel cursor read of internal tables?"
Rob

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Double Cursor - Hand, Magnifying Glass etc

I'm running CS3 Extended on a Dell Latitude 830 laptop with a Dell bluetooth mouse and a Wacom tablet -- the tablet plugs into a USB port. I'm seeing two hands, two magnifying glasses, two selection tool arrows, etc. Fortunately, only one brush tip. How do I get rid of the doppleganger? It doesn't affect performance, but it sure is annoying. I have a second laptop with a different bluetooth mouse and have shut that off (machine and mouse) thinking it was picking up an extra signal, but it doesn't make a difference. Am out of ideas and can't find a similar problem posted anywhere. Advice gratefully accepted.

I tried every combination of having the peripherals off and on and also completey removed Photoshop and reinstalled it and still have the doppleganger. I think it is a Windows issue -- this new laptop has a high resolution display, which makes the icons in the tool palette so tiny I can't see them. The double cursor started when I reset the resolution. It appears that my display is now set for "multiple monitors" which I don't have. I can't get it back to just the primary monitor so will call the Windows "help" people today and see if they can help. Is there a way to increase the size of the icons in Photoshop without tinkering with the screen resolution?
Thanks for your response to my initial question.

Buffer Busy Waits in a Read-Mostly Database?

11gR2 Standard Edition on Linux x86_64.
The database consists of two large tables (12GB+), one column of each of which has an Oracle Text index on it. Once a month, the two tables are refreshed from elsewhere, the Text indexes are updated, and then they sit there for the rest of the month, effectively read-only as users perform full text searches. The instance runs in 20GB of RAM, of which 16GB is given over to the (8K, default) buffer cache, 1GB SGA, 2GB PGA.
The principle recurring wait event on this database is buffer busy waits, for data blocks (i.e., not undo segment headers) -and the data blocks are those of the two tables (which have default freelists, freelist groups and initrans and maxtrans).
I get that during the monthly refresh, when there's loads of inserts happening, there could be lots of buffer busy waits. Since that refresh happens at weekends out-of-hours, waits during that time are not of any great concern.
My question is why there would be any such waits during the database's 'read-only' period, in between refreshes. I can positively guarantee that no DML is taking place then, yet the buffer busy waits still occur, from time to time.
On a possibly related note, why would I see lots of "consistent reads" during the 'read-only' period? The data isn't changing at all, so why would the database be busy doing consistent reads when current reads (I would have thought) would be good enough to get the data in the state it's actually at?

Catfive Lander wrote:
11gR2 Standard Edition on Linux x86_64.
The database consists of two large tables (12GB+), one column of each of which has an Oracle Text index on it. Once a month, the two tables are refreshed from elsewhere, the Text indexes are updated, and then they sit there for the rest of the month, effectively read-only as users perform full text searches. The instance runs in 20GB of RAM, of which 16GB is given over to the (8K, default) buffer cache, 1GB SGA, 2GB PGA.
The principle recurring wait event on this database is buffer busy waits, for data blocks (i.e., not undo segment headers) -and the data blocks are those of the two tables (which have default freelists, freelist groups and initrans and maxtrans).
I get that during the monthly refresh, when there's loads of inserts happening, there could be lots of buffer busy waits. Since that refresh happens at weekends out-of-hours, waits during that time are not of any great concern.
My question is why there would be any such waits during the database's 'read-only' period, in between refreshes. I can positively guarantee that no DML is taking place then, yet the buffer busy waits still occur, from time to time.
On a possibly related note, why would I see lots of "consistent reads" during the 'read-only' period? The data isn't changing at all, so why would the database be busy doing consistent reads when current reads (I would have thought) would be good enough to get the data in the state it's actually at?Catfive,
Are you running 11.2.0.1 or 11.2.0.2? If you are running 11.2.0.1 there are at least two bugs fixed by 11.2.0.2 to correct problems that lead to buffer busy waits. You mentioned that this is a "mostly" read only database where you are experiencing these waits - does that mean that there might be some inserts, updates, and deletes (possibly auditing related?)? One of the bug reports found on Metalink (MOS) is this one:
Doc ID 9341448.8, Bug 9341448 - "Buffer block contention on full block which keeps being tried for space"
How did you determine that the buffer busy waits were related to these two tables? Did you check V$SEGMENT_STATISTICS, monitor the session level wait events, create a 10046 trace at level 8 or 12, or use some other method? Are these tables typically read using parallel execution? Is there any chance that the application is performing SELECT ... FOR UPDATE?
Have you checked V$SESSION_EVENT to see which sessions waited on buffer busy waits? How severe are the buffer busy waits - 10 seconds in a 24 hour period, 1 minute in a 20 minute time period? Are you backing up this database using RMAN and comparing the change in the buffer busy waits before and after RMAN completes its backup?
I wonder if using SGA_TARGET could lead to buffer busy waits during an automatic buffer cache resize operation?
Regarding seeing "consistent reads" during the read only period, that should be expected when blocks are read from the buffer cache. Jonathan Lewis explained it well in at least one of the threads that he contributed to on OTN, but I cannot find that thread at the moment. Essentially (in as few words as possible), you will see current mode block accesses when the data blocks are being changed and consistent reads (consistent gets) when the blocks are being read. This thread includes comments that suggest what to check to determine if undo had to be applied to perform the consistent gets:
Index consists 1.5mln blocks, but full scan gets 11mln blocks
Edit:
I found the thread with Jonathan's comment:
high consistent read during parse call | tkprof output
"If you're not doing a current read then the only alternative is to do a consistent read.
Typically you do current reads because you want to change a block"
Charles Hooper
Co-author of "Expert Oracle Practices: Oracle Database Administration from the Oak Table"
http://hoopercharles.wordpress.com/
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc.
Edited by: Charles Hooper on Jan 5, 2011 8:45 AM
Added link to second OTN thread

ImageIcons read from database don't appear

Hi,
I create a JavaBean to show images from filesystem and database (oracle9i) in a JTable.
The ImageIcons loaded from filesystem appear fine whith my defined DefaultTabelModel.
The ImageIcons read from database (jdbc2) with the same DefaultTabelModel appear in the correct count, but the fields or placeholders of the Images, saved as blob, are blank.
The partcode of my resultset is
BLOB myblob = null;
int bufsize = 0;
while(result.next())
myblob = ((OracleResultSet)result).getBLOB("image_container");
bufsize = myblob.getChunkSize();
byte[] buffer = new byte[bufsize];
ImageIcon icon = new ImageIcon(buffer);
Object [] row = {icon};
model1.addRow(row);
model1.fireTableDataChanged();
I don't get any errors.
Thanks
Klaus

Hi,
I changed the datatype from BLOB to 'LONG RAW' for the image in the database.
while(result.next())
byte[] bytes = result.getBytes(1);
String jd = String.valueOf(bytes);
System.out.println(jd);
//get:[B@153 [B@154
    //or [B@155 [B@156 for the 2.result
    String name = result.getString(2);
    System.out.println(name);
    //get the correct result
    FileOutputStream file = null;
    file = new FileOutputStream ("c:\\"+name+".jpg");
    file.write(bytes);
    //it works fine !!!
    ImageIcon icon = new ImageIcon(bytes);   //it is correct ?
    String ls = String.valueOf(icon.getImageLoadStatus());
    String h = String.valueOf(icon.getIconHeight());
    String w = String.valueOf(icon.getIconWidth());
    System.out.println(h+" : "+w);
    //get: -1 : -1
    System.out.println(ls);
    //get: 4
    Object [] row = {icon,name};
//icon is blank, name appears correct in jtable
//but when I need:
//ImageIcon icon = new ImageIcon(AW_Frame.class.getResource("images/emac.jpg"));
//icon and name appears correct in jtable
model1.addRow(row);
model1.fireTableDataChanged();
any ideas ?
Thanks in advance !

Repairing Disk Permissions is stuck on "Reading Permissions Database"

Ever since I installed Leopard awhile ago I have not been able to repair my disk permissions. The Disk Utility progress bar stays on the spinning stripes indicating it is "Reading Permissions Database". I've been canceling out of it and just forgoing the process, but now my iCal is totally blank and I want to see if this will fix my problem. Do I just need to do a clean install?
I've searched through other posts and haven't found any other problem like this.

repair permissions in leopard takes much longer than in tiger (up to 40 minutes on older machines). You should let it finish.

Error 9 reading message database during Expire Maintenance

I have scheduled maintenance to perform an expire on my post office
Processing information for this run:
Path to PO = servername/mail:\groupwse\wcicc_po
Post Office= WCICC_POST
User = All
Action = Expire
Age Limit = Thursday, July 1, 2010 - 8:00 pm (60 days)
Trash Limit = 15 days
- Exp items = mail, calendar, doc refs, Inbox, Outbox
Verbose = Yes
Upd DiskSpace= No
Output log = servername/mail:\groupwse\wcicc_po\wpcsout\chk\gwexpire.log
I keep receiving the following error
================================================== ==============================
===== TASK LOG - 1305 (4c7c134e.ckl) ===========================================
================================================== ==============================
Checking for items matching purge criteria
Error 9- MESSAGE database read error BAD_IX (0xC00E)
Suggestion- Check physical consistency of database, rebuild if errors found
PROCESSING COMPLETED- total processing time: 0:00:00
================================================== ==============================
===== JOB LOG SUMMARY (4c7c0dcd.ckl) ===========================================
================================================== ==============================
*** User databases found: 1049
*** Total bytes reclaimed: 37799936
*** Average per database: 36034
Processing completed
***** OVERALL STATS FOR THIS RUN *****
Uncorrectable conditions encountered:
CODE DESCRIPTION COUNT
9 Errors reading message databases................... 1
Correctable conditions encountered:
CODE DESCRIPTION COUNT
39 Unrecognized or invalid files in mail directories.. 2
66 GWCheck log files in log directory................. 1
What message databse is this?
The previous lines show that msg254.db processing completed without errors. When I look in ofmsg directory, 254 is the last message database.
Thanks for any help.

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How to read Oracle Database as Input using BDC..

Hello SAP Minds,
How to read the data from Oracle data base to SAP tables. How can i use directly the Oracle database as input..
I have to upload the time data for my client for each of its employee per day. Their clock in and clock out time is recorded in the time maching and finally it gets stored into centralised oracle database, now they want me to use this centralised database as input and upload the same into SAP.
For example :
pernr time-in time-out begda endda
00001 8.00 18.00 26-11-2007 26-11-2007

You can use the database connector (DBCON) to read external databases directly.
matt

Run Preclone merge in read only database

HI ,
I have a production database is reserved for normal clone ( multi node clone ) . I have a new assignment that need to merge a appltop for a single node clone . so we choose a DR database as source , which is a read only database . When I run perl adpreclone.pl merge and enter apps password It return “ORA-01033: ORACLE initialization or shutdown in progress
Is any have any idea how to get around this problem so that I can continue my preclone merge ?
Thanks
Felix

This is DR site . It is a data guard server . so this database is not open . Below is messgae I get .
/oracle/prod/db/prodcomn/admin/scripts/PROD_usla1-vts-mgr-1$ perl adpreclone.pl appsTier merge
Running adgenhfver.pl with command...
perl /oracle/prod/db/prodappl/ad/11.5.0/bin/adgenhfver.pl isPrimary=y applsysusr=APPLSYS tempdir=/oracle/prod/db/prodcomn/temp
Please enter the APPS User [APPS]:
Please enter the APPS password: XXXXXXX
This is the merge Primary node:
ERROR:
ORA-01033: ORACLE initialization or shutdown in progress
ERROR:
ORA-01033: ORACLE initialization or shutdown in progress
Do you have any idea how do I get around this problem so that I can finish preclone ?
Thanks
Felix

Scheduling workbooks in read only database

We have a standby server for our OLTP and it is read only database. Read only database is not allowing to schedule discoverer reports. Can anyone suggest how to handle this?

Its a replication of OLTP. Every day night OLTP logs are applied into this read only database. We cannot change anything in EUL. Whatever the changes we do in OLTP EUL it gets reflected in the read only database.

Because when clicking in the in a button and to read the Database

Because when clicking in the in a button and to read the Database
is the checkbox false:?
if (sociosDataProvider1.cursorFirst())
               if (checkbox1.isChecked())
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Do I need to read the column or the checkbox?
Help, Help .. hehehehehe
Please hehehehe

Problems reading earlier database

The server I have been running a Perl script on has recently upgraded the version of Perl they are using from 5.8 to 5.10. My script uses the perl DB_File module to write some Berkeley DB databases and I now find that I can't read these databases. I see that the version of Berkeley DB that the Perl module is now linking to is 4.7.25 while previously it was much earlier, probably version 1 or 2.
Can someone please confirm that the way that the data is stored has changed sometime between these earlier versions and this new one so that this will account for my problem?

Hello,
The, "Berkeley DB Upgrade Guide" at:
http://download.oracle.com/docs/cd/E17076_02/html/upgrading/index.html
should contain the information you are looking for.
I went through and checked the section on:
Database or Log File On-Disk Format Changes
for releases from 4.1 to 4.7.25.
I am not sure what problem you are experiencing, but the log file
format changed from 4.1 to 4.7.25. Regarding database format changes:
Upgrading from 4.5 to 4.6 there
was a fully compatible database change:
The format of Hash database pages was changed in the Berkeley DB 4.6 release, and items are now stored in sorted order. The format changes are entirely backward-compatible, and no database upgrades are needed. However, upgrading existing databases can offer significant performance improvements. Note that databases created using the 4.6 release may not be usable with earlier Berkeley DB releases.
And going from 4.1 to 4.2 there was an incompatible database format change:
Queue databases that use encryption or data checksum features with extent files will need to be dumped and reloaded prior to using with release 4.2. For more details, see Queue access method. [#8671]
Thanks,
Sandra

Should I rebuild my read only database every time I launch my server?

I'm getting into web development, and I'm trying to get a grip on databases.
In an app I want to make, there is a read only database that will be filled up with a large amount of data, which will be the heart of the application, and also a lot of work to put in.
I'm uncomfortable with putting all this data into the database, as the database is "separate" from my web app code. I feel like I should rather write my data in code somewhere, and then have my application put the data into the database for me.
This way I would have my entire project written in code, and not an integral part of my software hidden away in the database, which is a bit complicated to work with, and seems difficult to move from computer to computer.
But is this a sensible way to do this, however? Should I write my data in code, and every time I launch the server, make the application drop all the tables and read them in from my code again?
Is this the wrong way to go about it? Would it cause considerable overhead? How do people do this?

Why are you uncomfortable in separating the data into a database? Don't you follow a modular approach when it comes to coding and separate the UI layer and the business layer? The data you are referring to, that many legacy applications will have at least
some of it embedded in the code in the form of constants, is an ideal lookup table data that should be stored in a database.
>>>"This way I would have my entire project written in code, and not an integral part of
my software hidden away in the database, which is a bit complicated to work with, and seems difficult to move from computer to computer."
You can locate your database centrally and connect to it from any computer. The maintenance of your read only data in your DB is much more easier than embedding it in
the code
>>>"Should
I write my data in code, and every time I launch the server, make the application drop all the tables and read them in from my code again?"
This is totally unnecessary. If you will be entering a lot of read only data into your DB, you can have
a small utility program that provides an interface to enter the data into a DB - if you are uncomfortable with using the SSMS UI or TSQL to enter the new data. Also, reloading the data every time will only make your application look very slow and unacceptable.
To summarize, store your data in a DB. Even it if is small application, you can start with SQL Express
edition to store the data as you will most likely need a proper DB in future if not now as your application functionality grows.
Satish Kartan www.sqlfood.com

How to Read MYSQL database ?

Dear everybody!
I have a MYSQL database that I need to read and to import data to SAP/R3 with ABAP .
I want to know how to connect and READ this database with ODBC driver.
I've install the ODBC driver at R3 server, but I can't see MYSQL at list of SAPDB on DBCO transaction.
Somebody can help me?
Best regards
Luciano

if you have a user in the user table in the mysql database with basically only select permissions you can make them able to access form anywhere by using the % symbol in the host column in the user table. using the % as a wildcard which means anything matches.

Trying to re install Photshop elements6 on my new computer. Error message reads Installer database is corrupt

Trying to re install Photshop elements6 on my new computer. Error message reads Installer database is corrupt

Rainstormn please see Error "...Installer Database is Corrupt..." when you install Adobe Creative Suite 4 or point product for information on how to resolve your current error. In the future please only transfer your documents and settings to your new computer. You can then install any needed applications.

Using Session Beans on a read only database

Hi,
i am working on a weblogic 6.1 server and have to access a read only database
using session beans. The transaction attributes of all session beans (we are using
no entity beans) are set to NOT_SUPPORTED but every time a method is accessed
an error message is thrown
BEGIN TRANS in read only database .....
Is there a way to avoid this?
Regards
Edmund

I guess it is NotSupported. If not try Never.
--Jay
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Double cursor read of database

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