Pros and cons Oracle vs DB2

Hi,
We are studying the possibiliy to change our oracle database to DB2. We need to know if someone made the change and found advantages and disadvantages between the two databases.
Our SAP runs on HP-UX and has a lot of Z developments, we know that may be necessary to modify many of them to optimize the readings on the database.
any comments would be helpful.
thanks in advance
Gonzalo

> We are studying the possibiliy to change our oracle database to DB2. We need to know if someone made the change and found advantages and disadvantages between the two databases.
Given the fact that you opened the thread in the DB2 for z/OS forum you mean that you're planning to migrate your systems to z/OS?
> Our SAP runs on HP-UX and has a lot of Z developments, we know that may be necessary to modify many of them to optimize the readings on the database.
Well - you answered the question yourself already; you have to decide whether it makes sense to migrate a database from A to B in your environment.
The program changes that may become necessary are only a one-time issue that comes with each migration. After that you should be safe. Also keep in mind that this kind of migration must be done by a certified migration consultant on-site (http://service.sap.com/osdbmigration).
I suggest you call your SAP sales rep and get a test-/evaluation license from SAP for DB2 and a do a test migration to see what you'd need to do with your developments.
Markus

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Pros and Cons af Oracle 10g upgrade to 11g

Hi Basis Expert,
We have an requirement of SAP upgrade which includes BW 3.5, CRM and R/3 (4.7).
These components needs to be upgraded to the latest version
BW 3.5 to BI 7.0
R/3 (4.7) to ECC 6.0
and also CRM upgrade to the new version
The OS used is AIX and DB used is oracle 10g.
Can anybody share the pros and cons of oracle DB upgrade from 10g to 11g after SAP upgrade.
Regards,
Anil.

Hi DatabaseSAP and others,
Thanks for your reply
I started with the Oracle 11g software installer. But it gave an error during 71%. Error is
Error in invoking target 'rat_on part_on dm_on olap_on sdo_on' of makefile '/oracle/DBW/112_64/rdbms/lib/ins_rdbms.mk'.
See '/oracle/DBW/oraInventory/logs/installActions2011-10-10_12-04-03PM.log' for details.
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But when i was going thorough the installActions2011-10-10_12-04-03PM.log . I could find that there are 7 arguments which is failed.
Below are the argument details
1)INFO: Hard Limit: maximum user processes: This is a prerequisite condition to test whether the hard limit for "maximum user processes" is set to at least 16384.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
Verification Result for Node:p19849dev136
INFO: Expected Value:1024
INFO: Actual Value:9223372036854775807
INFO: -
INFO: *********************************************
INFO: Hard Limit: maximum user processes: This is a prerequisite condition to test whether the hard limit for "maximum user processes" is set to at least 16384.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:16384
INFO: Actual Value:3048
INFO: Error Message:PRVF-4354 : Proper hard limit for resource "maximum user processes" not found on node "p19849dev136" [Expected = "16384" ; Found = "3048"]
INFO: Cause: Hard limit for the resource does not meet the requirement on the specified node.
INFO: Action: Modify the resource limits to meet the requirement.
2)INFO: OS Kernel Parameter: ncargs: This is a prerequisite condition to test whether the OS kernel parameter "ncargs" is properly set.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:128
INFO: Actual Value:6
INFO: Error Message:PRVF-7543 : OS Kernel parameter "ncargs" does not have proper value on node "p19849dev136" [Expected = "128" ; Found = "6"].
INFO: Cause: Kernel parameter value does not meet the requirement.
INFO: Action: Modify the kernel parameter value to meet the requirement.
3)INFO: OS Kernel Parameter: tcp_ephemeral_low: This is a prerequisite condition to test whether the OS kernel parameter "tcp_ephemeral_low" is properly set.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:9000
INFO: Actual Value:32768
INFO: Error Message:PRVF-7543 : OS Kernel parameter "tcp_ephemeral_low" does not have proper value on node "p19849dev136" [Expected = "9000" ; Found = "32768"].
INFO: Cause: Kernel parameter value does not meet the requirement.
INFO: Action: Modify the kernel parameter value to meet the requirement.
4)INFO: OS Kernel Parameter: tcp_ephemeral_high: This is a prerequisite condition to test whether the OS kernel parameter "tcp_ephemeral_high" is properly set.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:65500
INFO: Actual Value:65535
INFO: Error Message:PRVF-7543 : OS Kernel parameter "tcp_ephemeral_high" does not have proper value on node "p19849dev136" [Expected = "65500" ; Found = "65535"].
INFO: Cause: Kernel parameter value does not meet the requirement.
INFO: Action: Modify the kernel parameter value to meet the requirement.
5)INFO: OS Kernel Parameter: udp_ephemeral_low: This is a prerequisite condition to test whether the OS kernel parameter "udp_ephemeral_low" is properly set.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:9000
INFO: Actual Value:32768
INFO: Error Message:PRVF-7543 : OS Kernel parameter "udp_ephemeral_low" does not have proper value on node "p19849dev136" [Expected = "9000" ; Found = "32768"].
INFO: Cause: Kernel parameter value does not meet the requirement.
INFO: Action: Modify the kernel parameter value to meet the requirement.
INFO: -
6)INFO: OS Kernel Parameter: udp_ephemeral_high: This is a prerequisite condition to test whether the OS kernel parameter "udp_ephemeral_high" is properly set.
INFO: Severity:IGNORABLE
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
INFO: Expected Value:65500
INFO: Actual Value:65535
INFO: Error Message:PRVF-7543 : OS Kernel parameter "udp_ephemeral_high" does not have proper value on node "p19849dev136" [Expected = "65500" ; Found = "65535"].
INFO: Cause: Kernel parameter value does not meet the requirement.
INFO: Action: Modify the kernel parameter value to meet the requirement.
7)INFO: Users With Same UID: This test checks that multiple users do not exist with user id as "0".
INFO: Severity:CRITICAL
INFO: OverallStatus:VERIFICATION_FAILED
INFO: -
INFO: Verification Result for Node:p19849dev136
WARNING: Result values are not available for this verification task
INFO: Error Message:<CV_VAL>root,|super,|zero,|</CV_VAL><CV_ERES>0</CV_ERES>
INFO: Cause:Cause Of Problem Not Available
INFO: Action:User Action Not Available
INFO: *********************************************
Please let me know what is the 7th (last one) argument.
Regards,
Anil Shenoy

Pros and cons of using email sending package in oracle 8.1.6

hi ,
i would like to know the advantages /disadvantages of using email sending package from oracle 8.1.6
compared to sending the same using say perl or php.
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Hi Ravi,
Thanks for your reply.
But I am specifically looking at pros and cons for web services. So the thread which you passed to me won't help.
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Hi Experts,
We are planning to upgrade oracle from 10.2.0.2 to 11g, could any one please let us know the pros and cons of 11g over 10g
Thanks,
Ravi

Sure:
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PRO: it provides many new features, e.g. compression for tables, indexes, backups
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As a SAP customer you basically have to follow the upgrade plans.
regards,
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What are the pros and cons using Active Data Guard vs Data Guard?

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Thanks for any help.

Hemant K Chitale wrote:
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Dear Gurus,
We are designing a database that will be receiving comments from external data source. These comments are stored as CLOB in the external database. We found that only 1% of incoming data will be larger than 4000 characters and are now evaluating the Pros and Cons of storing only 4000 characters of incoming comments in VARCHAR2 data type or using CLOB data type.
Some of the concerns brought up during discussion were:
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- applications that build web page with CLOBs will be struggling to fit 18 thousand chararcters of which 17 thousand are blank lines;
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- UNION, MINUS, INTERSECT don't work with CLOBs
I have not delt with CLOB data type in the past, so I am hoping to hear from you of any possible issues/hastles we may encounter?

848428 wrote:
Dear Gurus,
We are designing a database that will be receiving comments from external data source. These comments are stored as CLOB in the external database. We found that only 1% of incoming data will be larger than 4000 characters and are now evaluating the Pros and Cons of storing only 4000 characters of incoming comments in VARCHAR2 data type or using CLOB data type.
Some of the concerns brought up during discussion were:
- having to store CLOBs in separate tablespace;They can be stored inline too. Depends on requirements.
- applications, such Toad require changing defaults settings to display CLOBs in the grid. Default value is not to display them;Toad is a developer tool so that shouldn't matter. What should matter is how you display the data to end users etc. but that will depend on the interface. Some can handle CLOBs and others not. Again, it depends on the requirements.
- applications that build web page with CLOBs will be struggling to fit 18 thousand chararcters of which 17 thousand are blank lines;Why would they struggle? 18,000 characters is only around 18k in file size, that's not that big to a web page.
- cashing CLOBs in memory will consume big chunk of data buffers which will affect performance;Who's caching them in memory? What are you planning on doing with these CLOBs? There's no real reason they should impact performance any more than anything else, but it depends on your requirements as to how you plan to use them.
- to manipulate CLOBs you need PL/SQL anonymous block or procedure;You can manipulate CLOBs in SQL too, using the DBMS_LOB package.
- bind variables cannot be assigned CLOB value;Are you sure?
- dynamic SQL cannot use CLOBs;Yes it can. 11g supports CLOBs for EXECUTE IMMEDIATE statements and pre 11g you can use the DBMS_SQL package with CLOB's split into a VARCHAR2S structure.
- temp tables don't work very well with CLOBs;What do you mean "don't work well"?
- fuzzy logic search on CLOBs is ineffective;Seems like you're pulling information from various sources without context. Again, it depends on your requirements as to how you are going to use the CLOB's
- not all ODBC drivers support Oracle CLOBs not all, but there are some. Again, it depends what you want to achieve.
- UNION, MINUS, INTERSECT don't work with CLOBsTrue.
I have not delt with CLOB data type in the past, so I am hoping to hear from you of any possible issues/hastles we may encounter?You may have more hassle if you "need" to accept more than 4000 characters and you are splitting it into seperate columns or rows, when a CLOB would do it easily.
It seems as though you are trying to find all the negative aspects of CLOBs and ignoring all the positive aspects, and also ignoring the negative aspects of not using CLOB's.
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/dev/did/rdsk/d12
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d304: Soft Partition is setup
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root@lbsdb1 # metainit -s oraset d316 -p d305 1025M
d306: Soft Partition is setup
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d307: Soft Partition is setup
root@lbsdb1 # metainit -s oraset d318 -p d305 1025M
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Hi,
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I manage the setup Dataguard environment on Windows
One more question
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Should get applied isnt it
Message was edited by:
Maran Viswarayar

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2)if i want to use indexing,how fast is iFS compared to doing indexing in oracle8i ?
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awaiting reply
null

Ravi, I sorry, but I don't understand your questions. My comments are preceded with >>.
Assuming that I have stored all of my data--both RDBMS and non-relational data, namely html files and xml files--in iFS, the first thing I want to ask you is:
I don't know what you mean, "store your RDBMS data in iFS". You store RDBMS data in the Oracle database directly. 1) if i want to read the iFS and display only the RDBMS data from the iFS, how fast it can be done compared to traditionally storing the RDBMS data in a table in oracle8i?
You don't store RDBMS data in iFS.2) if i want to use indexing, how fast is iFS compared to doing indexing in oracle8i ?
It's the same. Under the covers, iFS uses both the normal RDBMS indexing for its metadata, and the normal interMedia Text indexing for the non-relational data.3) if i want to search for a particular record how fast is it compared to doing the same in an RDBMS table in oracle8i?
It's the same. iFS uses the normal RDBMS searching capabilities under the covers.4) say i want to mirror the contents of the iFS from one oracle8i server to another oracle8i server,what are the pros and cons?
I'm not sure what you mean by "mirror". Are you referring to replicating?null

HT204053 What are the pros and cons of 1) choosing to use the SAME Apple ID for iCloud services on one side, and purchases on the iTunes Store, App Store, and iBookstore, on the other side; or 2) to have and use two separate Apple Ids for these "two sides

All is in the title, so I repeat it below with a better identation.
What are the pros and cons of
1) choosing to use the SAME
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purchases on the iTunes Store, App Store, and iBookstore, on the other side; or
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P.S.
I have loads and loads of free podcasts in iTunes in my iMac, that are certainly more thant the 5 gigas the iCloud provides for free, so I don't want those to go to the cloud. But this is perhaps a different question...
Also need to mention that I have itunes on a mac, a pc and an iphone.
Sorry to look so silly with this question, but I don't get the "big picture".

You need to create a user account for your wife (or yourself depending on who has the current user account). When syncing, each of you should sign in as a separate user, login to iTunes and then sync. I had this problem when my sister got an iPhone. When we did her initial sync, everything on my iPhone showed up on hers. Apple gave me this solution.

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I am new to Data federator designer. I need help on the below.
Could you please let me know the Pros and Cons while joining the source tables in data federator
And While joining the DF target tables in universe designer.
Regards,
Gana

Hi,
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Target tables:Target tables are same as source tables
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Thanks,
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Dear Mahulenka
Thanks a lot for the reply. It do have helped me.
Yest it is VBAP-WERKS (typo error ).
Infact I had given the same solution for the issue.
Interstingly, they are insisting on a better solution fit for their requirement. Anyway shall 'highlight' the points again to them try to get it solved
Just wondering has anyone faced the same situation before.
Thanks again for the reply and good luck
Best Regards
Ajay Kumar Veeranki

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