Datetime arithmetics in OLAP DML

Hi.
I have some miscalculations in my OLAP DML programs.
For example I want to subtract 5 min. from some datetime variable
NLS_DATE_FORMAT = 'dd.mm.yyyy hh24:mi:ss'
SHOW TO_DATE('10.02.2005 10:00:00') - 1 / 24 / 12
I've got
10.02.2005 10:05:00
I've discovered miscalculation take place only while subtracting fractional numbers. Addition works accurately with any numbers.
Can anyone help me?
Thank you.
Andrew

Hi Lars
I'm sorry. I wrote first message from memory and I took arbitrary time value.
I discovered that problem take place with round day datetime variable.
For example
NLS_DATE_FORMAT = 'dd.mm.yyyy hh24:mi:ss'
SHOW TO_DATE('10.02.2005 00:00:00') - 1 / 24 / 12
I've got
10.02.2005 00:05:00
But that is not a problem in PL/SQL, only in OLAP DML.

Similar Messages

How do I view data from OLAP DML program or statement?

Hi
I'm struggling to find any information on this topic anywhere on the net:
How to view data produced by an Oracle OLAP DML program or statement.
Background :
I am using the latest AWM to create and maintain dimensions, cubes and measures. However, I've noticed that AWM, Discoverer OLAP, BI Beans, Excel Plug-In et al only provide a fixed set of formula and expressions.
For example, I wanted to created a Standard Deviation (STDEV) on measure. After much searching I learnt that I could do this by creating a custom measure in AWM by importing a measure defined in an XML dcoument as it's not provided by AWM. The output in Discoverer OLAP on the surface seems to give the correct results, however when drilling from high level to lower level of time time dimension hierarchy Discoverer includes the parent value in the calculation and renders the values incorrect.
My alternative is to use OLAP DML, as it provides a richer range of formuale and calculations possibilities and I was hoping to use this functionality to do create the measures. I have the distinct impression, however, that OLAP Worksheet is the only interface out there to do this.
It seems very primitive and limited with regards to data output, almost like SQL*Plus in many ways.
The burning questions I have are :
1) Do I need to write DML programs to perform these custom measure calculations and add them to cubes or do I import the custom measures via AWM and XML?
2) If the answer to question 1 is DML programming, is there a way of viewing the OLAP data output through a GUI interface without embedding the statements in SQL.
3) Has anyone experienced or noticed the same problem with Discoverer OLAP, AWM Viewer that I mentioned above? i,e, statistical functions performed on whole dimension hierarchy rather than lower levels.
I'm hoping someone out there knows what I am trying to do or get at. Keith, any ideas or suggestions?
Thanks
Kind Regards
Greg

Hi Greg,
There are two ways to achieve what you want. Both require the use of custom calculations which cannot be created via the calculation wizard within AWM. To do this the easiest way is step outside of AWM and use the Excel Calculation utility that is on the OLAP OTN home page:
Creating OLAP Calculations using Excel
http://download.oracle.com/otn/java/olap/SpreadsheetCalcs_10203.zip
Readme
http://www.oracle.com/technology/products/bi/olap/OLAP_SpreadsheetCalcs.html
(Oracle OLAP DML Reference contains a list of all the OLAP functions that can be used to create a custom calculation. http://www.oracle.com/technology/products/bi/olap/OLAP_DML_10.2.zip)
The Excel tool lets you assign your own formula to a measure and then uploads that measure definition into your AW. It is possible to import a custom calculation template into AWM using the menu option on the Calculated Measure node of each cube, but it is safer to use the Excel Worksheet as this directly uses the public XML API and is always best to use a public API rather than hacking XML templates.
There are two types of custom calculation:
1) Formula: using a formula you can directly call any of the OLAP functions. For example to create a measure that returns the standard deviation for a measure then you would enter the following as the formula for your calculated measure:
stddev(sales_revenue, time)
The easiest way to test if the measure is working as expected is to use the data viewer within AWM.
2) Programs - if the function you need is not provided or you want to do special processing to return a result you can create an OLAP DML program which can return a result. To do this use OLAP Worksheet to define the program and add a datatype to the DEFINE statement, such as :
DEFINE PRG_SD_SALES PROGRAM DECIMAL
In the program return the value you have calculated within your program. Within the program you can do just about anything but be aware that your program is going to fire for every cell within your virtual cube so it must be efficient and fast to execute. For a measure then you would enter the following as the formula for your calculated measure:
prg_sd_sales(time, products, geographies, channels).
The actual program code would look something like this:
DEFINE PRG_SD_REVENUE PROGRAM DECIMAL
PROGRAM
argument T_TIME TIME
argument T_PRODUCT PRODUCTS
argument T_GEOGRAPHY GEOGRAPHIES
argument T_CHANNEL CHANNELS
variable D_RETURN decimal
TEMPSTAT TIME, PRODUCTS, GEOGRAPHIES, CHANNELS
do
limit PRODUCTS to T_PRODUCT
limit CHANNELS to T_CHANNEL
limit GEOGRAPHIES to T_GEOGRAPHY
limit TIME to T_TIME
limit TIME add descendants using TIME_PARENTREL
limit TIME keep TIME_LEVELREL 'CAL_MONTH'
D_RETURN = stddev(SALES_REVENUE)
doend
return D_RETURN
END
This code computes a standard deviation the all months within the specified time range, at year level for all 12 months, at quarter level for the three months within the quarter ans returns NA at the month level.
As the code executes within a implicit loop you can only change the status fo dimensions that for part of that implicit by using the TEMPSTAT command. To test the program at the command line use the OLAP Worksheet and the SHOW command to just return one cell of data, DO NOT SIMPLY USE THE RPR COMMAND because you will have to wait for the whole cube to be returned. If you want to use the RPR command make sure you limit your base dimensions first! You can use PRGTRACE to debug your program code it is not working as expected. Again, the easiest way to test if the measure is working as expected is to use the data viewer within AWM, although this will not return debug information so send all your debug output to a file to capture any errors and/or trace the execution flow.
Hope this helps
Keith Laker
Oracle EMEA Consulting
BI Blog: http://oraclebi.blogspot.com/
DM Blog: http://oracledmt.blogspot.com/
BI on Oracle: http://www.oracle.com/bi/
BI on OTN: http://www.oracle.com/technology/products/bi/
BI Samples: http://www.oracle.com/technology/products/bi/samples/

Creating a Cube using pure OLAP DML

This should be quite simple, but neither reading OLAP_*.pdf nor googling helped me, so maybe you can give me a hint where to look:
I want to create dimensions, populate them, create a cube, and finally populate it, using just OLAP DML (i.e. no DBMS_AW or CWM/CWM2 packages).
1) How can I execute OLAP DML? Right now I'm using sqlplus, wrapping each line in execute dbms_aw.execute(...);
There's some better way, right? :)
2) Can someone give me a link to a simple tutorial, showing how to create a cube et c.? Right now I'm as far as
AW CREATE olaptest1
DEFINE dimfoo DIMENSION TEXT AW olaptest1
DEFINE dimbar DIMENSION TEXT AW olaptest1
SQL SELECT DISTINCT(foo) FROM footable ORDER BY 1 INTO :dimfoo
(the latter one fails, telling me that "quux is not a vaild olaptest1!dimfoo")
3) Have I understood this correctly: I only need an Catalog if I want to work with AWM or DBMS_AWM, not if I just use DML?

I'm not sure exactly why you want to do this.
I guess I didn't explain very clearly :)
We (i.e. the company I work for) creates software (in C++) which needs to work with a lot of data which is in an Oracle-DB.
As the analysis done by the SW would profit (performance-wise) from the layout of the data in an cube, we want to get the data in a cube.
But information like the number of dimensions isn't known beforehand (as that's sth. that's dependent on the site the customer uses the SW on, and can
change with time), the software has to do the creation of dims and the cube itself.
(For the curious ones: http://www.centerpoint.eu.com/ )
And as OLAPI isn't available for C++ (at least afaics), I'd really want to do this in PL/SQL.
If you do use standard form, you then allow yourself the
option of using the various tools later
That's really not needed :)
You can always build the original AW using
AWM, then save the build script it generates, and use
that to do subsequent builds.
Is that build-script in OLAP DML? How do I save it?
BTW, in addition to the SPL INFILE command, there is
the DBMS_AW.INFILE plsql routine, which saves you
some quotes :-).
dbms_aw.execute('infile ''work_dir/my.inf''') vs
dbms_aw.infile('work_dir/my.inf')
I hate superfluous quotes :)
Thanks Jim!

Creating variables in OLAP DML - 11g

Hi Experts,
My understanding is that the OLAP metadata is exposed to GUI via formulas only. if I create a variable in OLAP DML worksheet, is it possible to expose it to cube view, and awm by formulas/programs etc?
Kind Regards

In OLAP Worksheet you can select 'SQL Mode' from the Options menu and run the SELECT statement there. Alternatively you can run the SELECT statement from inside an olap dml PROGRAM. Here is an example.
DEFINE LIST_AWS PROGRAM
PROGRAM
VARIABLE _owner    TEXT
VARIABLE _aw       TEXT
VARIABLE _errortext TEXT
VARIABLE _id_width INTEGER
TRAP ON HADERROR NOPRINT
" SQL Names are 30 characters long
_id_width = 30
" Declare a SQL cursor to get the list of AWs
SQL DECLARE AW_SQL CURSOR FOR -
SELECT OWNER, AW_NAME FROM ALL_AWS
" Open the cursor
SQL OPEN AW_SQL
" Loop through the results
WHILE SQLCODE EQ 0
DO
    IF _aw EQ NA
    THEN DO
           " First loop, so print report headings
           SHOW JOINCHARS(RPAD('OWNER', _id_width) ' ' 'AW')
           SHOW JOINCHARS(RPAD('-' _id_width '-' ) ' ' RPAD('-' _id_width '-'))
         DOEND
    ELSE DO
           " Print aw and owner names
           SHOW JOINCHARS (RPAD(_owner, _id_width) ' ' _aw)
         DOEND
    " Fetch next row into local varialbes
    SQL FETCH AW_SQL INTO :_owner, :_aw
DOEND
" A SQLCODE of 100 is OK,since it means end of records
IF SQLCODE EQ 100
THEN DO
         SQL CLOSE AW_SQL
         SQL CLEANUP
         RETURN
      DOEND
HADERROR:
   SHOW SQLERRM
   SQL CLEANUP
ENDAnd here is what I see when I call it as the GLOBAL user.
call list_aws
OWNER                      AW
SYS                      EXPRESS
SYS                      AWMD
SYS                      AWCREATE
SYS                      AWCREATE10G
SYS                      AWXML
SYS                      AWREPORT
GLOBAL                      GLOBAL

[OLAP DML] display on screen the output while the program is running

Hi,
I'm running a script in AWM that is quite long, and I've placed some few 'show' so that I know what the program is doing, but it won't show on the screen the outputs until the program ends. I guess it writes all the outputs in a kind of buffer and release the content of the buffer at the end of the program.
How could I have it to release this buffer continuously?
Thanks

i think the relational analogy would be an anonymous pl/sql block executing a list of commands while outputting a list of useful dbms_output.put_line log statements:
Just as with SHOW and olap worksheet cmd line, you cant see the running dbms_output log while the pl/sql program is running... you need to wait for it to complete before you can see the log.
You can write to a file and close/exit the file each time or you can write to log table and commit each time but i guess, some such heavy lifting is needed if you want to track the long running process mid-way.
NOTE: For regular operations like dbms_cube.build load/forecast/allocate process/steps, you can always run queries against CUBE_BUILD_LOG etc mid-way. But if it's pure olap dml actions being performed then no neat pre-built handle to check things mid-way exists.

How to generate OLAP DML code or CWM2 code outside of workspace manager 10g

I am using AWM 10.2, where I am creating cubes and dimensions etc. I can export the workspace into XML, but i want more, i want to generate definition of my OLAP, i want to see OLAP DML code for creating my workspace. Anybod has an idea ?
1) How can I generate OLAP DML definition of my existing workspace ?
Second thing is, that I really don't understand the concept of CWM2, what is this good for ? Is my AWM automatically generating some CWM2 statements and executing it ? Where can i see them ? Why do i need another logical CWM definition when I have regular OLAP definition ?
2) What is the role of CWM2 in OLAP ? How can i generate CWM2 code outside of my existing workspace ?

The DESCRIBE command will give you the definition of the object but it won't tell you anything about how objects should be populated. The API for Analytic Workspaces (AW/XML) takes responsibility for both object creation and object maintenance.
What is it that you might want to accomplish by using OLAP DML to create the objects?

Whitepaper/Info Budgeting/Planning/Writeback via Oracle OLAP DML

Hi,
does anyone know of any whitepaper, manual section, general information regarding writeback, planning, budgeting using Oracle OLAPs DML API? We would like to upgrade our proprietary DataAccess-Layer, which interfaces to Oracle OLAP via the DML-API, to allow writeback.
As said the documentation for this topic seems to be scarce to none.
Just to give an example: it is not possible to write back values to the base measures UNITS_CUBE_SALES/COST/UNITS of the UNITS_CUBE in global AW, since all of them are FORMULA objects. The underlying variable to which you can assign values is in 10g UNITS_CUBE_SALES_STORED, whereas in 11g you would limit the ALL_MEASURES_DIM object to the SALES measure and assign a value to a variable named UNITS_CUBE_STORED. Basically this is information I was fishing out of this forum, but didn't find documented in the Oracle manuals.
Therefor I am wondering, if writeback via the Oracle OLAP DML API is something, which is officially not supported? Or maybe I just didn't look in the right places to find documentation.
BTW: I am looking at this topic from an ISV point of view.
Best regards
Ralf
Edited by: Ralf Steinstraesser on Aug 18, 2009 5:15 AM

hello,
i can only speak about 10 G
There are 2 modes to attach an aw for writing data.
http://download.oracle.com/docs/cd/B19306_01/olap.102/b14346/dml_x_arcsin011.htm#i1016126
1)In rw mode
Only one user can have an analytic workspace open in read/write at a time
2)in multi mode
A workspace that is attached in multiwriter mode can be accessed simultaneously by several sessions
you find documentation for multi write
http://download.oracle.com/docs/cd/B19306_01/olap.102/b14346/dml_appcats003.htm#CHDJFJHD
hope this help you
jean marc

Tip: Improving The Performance Of OLAP DML Table Inserts

Quick Oracle OLAP Tip:
If you need to write the contents of a variable, or a group of variables, to a relational table, you would normally use the SQL INSERT command. Normal practice is to loop round all of the variables' dimension values, inserting the variable values into the relational tables one by one, until the variable has been completely loaded into your database table.
Oracle 9i OLAP however introduces two new commands, SQL PREPARE and SQL EXECUTE (http://download-west.oracle.com/docs/cd/B10501_01/olap.920/a95298/sql5.htm#1027902) , that allow us to prepare our INSERT statement in such a way that it uses bind variables to pass values to the Oracle tables. Bind variables are generally a 'good thing' and reduce the amount of time Oracle has to spend parsing your SQL insert statements. In addition, you can specify additional options with SQL PREPARE to specify 'direct path' insertions (quicker as they bypass the normal SQL engine and directly load data into Oracle blocks), nologging (to eliminate redo log generation), and to nominate individual partitions to load data in to. It's worth noting that there's an error in the current OLAP DML documentation that suggest that any OLAP DML insert operation into an Oracle table locks the entire table, preventing other AW processes from inserting into the table until you commit. This is actually incorrect, and full-table locking only occurs if you use the DIRECT=YES option, which locks the table in the same way that SQL*Loader locks the table as they both use the Direct Path API.
However, an even better solution than using SQL EXECUTE and SQL PREPARE is to use the OLAP_TABLE feature in Oracle 9i (http://download-west.oracle.com/docs/cd/B10501_01/olap.920/a95295/olap_tab.htm#73729) to create a view against your AW variable, then use this view as the source for a "INSERT INTO table SELECT * FROM source" SQL statement, optionally using the /*+ INSERT APPEND */ option if you want to carry out direct path insertions. By using OLAP TABLE and having the SQL engine insert multiple variable values into our target table, rather than having an OLAP DML program loop through the variable and carry out multiple single-row insertions, we were able to increase our write performance by an order of magnitude compared to our earlier SQL INSERT command. One thing to bear in mind though is that, if you are running many copies of the program concurrently, using direct path insertions may well cause lock contention, as each process will obtain an exclusive table lock while the direct insertion takes place. In the case of concurrent processes, it may be better to use conventional path insertions (but still use SQL PREPARE and EXECUTE, or OLAP TABLE) as these only require row-level exclusive locks.

you can use Execution plain
http://stackoverflow.com/questions/7359702/how-do-i-obtain-a-query-execution-plan
and add index.
Index according to the fields you ask queries can improve performance greatly larger!
You can use the statistics for building indexes:
http://www.mssqltips.com/sqlservertip/2979/querying-sql-server-index-statistics/
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Anyone know of a good OLAP DML/DDL tutorial? (and NOT reference guide)

In addition to Analytic Workspace, I am trying to learn how to build cubes using just the OLAP DML / DDL language.
Oracle and others have published a great deal of reference material on the language of OLAP DML / DDL but I can't find any real tutorials that guide me logically thru the process of creating cubes and all that goes with it (defining dimensions, hierarchies, measures, calculations etc..) All the reference material is spread out in bits and pieces and difficult to efficiently learn from. Does anyone have any good OLAP DML / DDL tutorial links they could recommend? Thanks.

John W wrote:
Oracle and others have published a great deal of reference material on the language of OLAP DML / DDL but I can't find any real tutorials that guide me logically thru the process of creating cubes and all that goes with it (defining dimensions, hierarchies, measures, calculations etc..) All the reference material is spread out in bits and pieces and difficult to efficiently learn from. Does anyone have any good OLAP DML / DDL tutorial links they could recommend? Thanks.This is a very difficult task. The OLAP DML/DDL only supports basic multidimensional variables, dimensions (very primitive), and relations. The externally visible cubes and dimensions are a construct of a lot of component objects (a dimension has many primitive dimensions and relations put together to create the higher level DIMENSION that goes with a cube; a cube has multiple variables and other pieces that get put together) in the AW, plus a bunch of metadata objects in the Oracle dictionary.
You really don't want to try to create your own and expect them to interact with the OLAPI interfaces. It is possible to construct your own version of things, but you'd also have to do your own view generation, etc. There are applications out there that are created from scratch, but they are completely from scratch (including whatever interactions they have via SQL). Whatever you create will not work with any of the Oracle-provided interfaces, nor the recently-announced Simba MDX package.
Jim

XOQ-00703: error executing OLAP DML command "(SYS.AWXML!R11_INITIALIZE_AW

Hello!
Just upgraded from 10.2.0.4 64 bit Windows to 11.2.0.2 64 bit OEL it test environment. DB Compatibility = 11.2.
SQL> select comp_name,version,status from DBA_REGISTRY where comp_name like '%OLAP%';
COMP_NAME
VERSION STATUS
OLAP Analytic Workspace
11.2.0.2.0 VALID
Oracle OLAP API
11.2.0.2.0 VALID
OLAP Catalog
11.2.0.2.0 VALID
Problem 1: We had 2 AWs in PROD on 10.2.0.4.We can not open any of them in 10g mode.
Problem 2: When we are trying to create AW in 11G mode we receive this error: XOQ-00703: error executing OLAP DML command "(SYS.AWXML!R11_INITIALIZE_AW
We have tried to rerun xumuts.plb under sys.
Log contains following errors:
=============================================
BEGIN dbms_aw_build.build('EXPRESS', FALSE); END;
ERROR at line 1:
ORA-00600: internal error code, arguments: [xspg: RSALPAGE01], [8128], [], [],
ORA-06512: at "SYS.DBMS_AW_BUILD", line 107
ORA-06512: at line 1
BEGIN dbms_aw_build.build('AWMD', TRUE); END;
ERROR at line 1:
ORA-34738: A severe problem has been detected. Analytic workspace operations
have been disabled.
ORA-06512: at "SYS.DBMS_AW_BUILD", line 107
ORA-06512: at line 1
==========================================
and so on for each system AW
should we raise a SR or somebody has any idea?
Big thx in advance!
Regards,
Kirill
Edited by: Kirill on Jun 16, 2011 1:34 PM

I think you should raise an SR on this issue.

INI: XOQ-01600: OLAP DML Error "ORA-01438: value larger than specified prec

I have created a Time dimension in AWM 11.1.0.7.0B.
I have added two Hierarchies to it. One Hierarchy has All Years, Year, Week, day. The second hierarchy has All Years, Year, Quarter.
When I maintain the dimension, the following error occurs:
An error has occurred on the server
Error class: Express Failure
Server error descriptions:
INI: Error creating a definition manager, Generic at TxsOqConnection::generic<BuildProcess>
INI: XOQ-01600: OLAP DML Error "ORA-01438: value larger than specified precision allowed for this column
" while executing DML "SYS.AWXML!R11_LOAD_DIM('TIME.ALL_GREGORIAN_YEARS.LEVEL' SYS.AWXML!___R11_LONG_ARG_VALUE(SYS.AWXML!___R11_LONG_ARG_DIM 1) 'TIME.END_DATE.ATTRIBUTE' 'TIME.TIME_SPAN.ATTRIBUTE' 'TIME.LONG_DESCRIPTION.ATTRIBUTE' 'TIME.SHORT_DESCRIPTION.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_END_DATE.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_TIME_SPA.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_LONG_DES.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_SHORT_DE.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_TIME_SPA1.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_TIME_SPA2.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_TIME_SPA3.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_LONG_DES1.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_SHORT_DE1.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_TIME_SPA4.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_LONG_DES2.ATTRIBUTE' 'TIME.ALL_GREGORIAN_YEARS_SHORT_DE2.ATTRIBUTE' 'TIME.GREGORIAN_QUARTER_END_DATE.ATTRIBUTE' 'TIME.GREGORIAN_QUARTER_TIME_SPAN.ATTRIBUTE' 'TIME.GREGORIAN_QUAOLAP DML Error "%(1)s" while executing DML "%(2)s", Generic at TxsOqStdFormCommand::execute
at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.executeBuild(Unknown Source)
at oracle.olap.awm.wizard.awbuild.UBuildWizardHelper$1.construct(Unknown Source)
at oracle.olap.awm.ui.SwingWorker$2.run(Unknown Source)
at java.lang.Thread.run(Thread.java:595)

The most likely explanation is that you have a numeric attribute whose data type precision is less than that of the column it is mapped to. For example if you had an attribute with data type NUMBER(2) and you mapped it to a column with data type NUMBER(5), then you could get this error on load. Note that some of the attributes may not be visible in AWM. The offending SQL statement should be in the OUTPUT column of the CUBE_BUILD_LOG, but you may be able to fix this by just describing the view associated with the dimension. For example, here is the description of a TIME view created in 11.2..
Name                            Null?    Type
DIM_KEY                             VARCHAR2(60)
LEVEL_NAME                             VARCHAR2(30)
MEMBER_TYPE                             VARCHAR2(1)
DIM_ORDER                             NUMBER
END_DATE                             DATE
TIME_SPAN                             NUMBER
LONG_DESCRIPTION                        VARCHAR2(60 CHAR)
SHORT_DESCRIPTION                        VARCHAR2(60 CHAR)
MONTH_END_DATE                         DATE
MONTH_TIME_SPAN                        NUMBER(5)
MONTH_LONG_DESCRIPTION                    VARCHAR2(60 CHAR)
MONTH_SHORT_DESCRIPTION                   VARCHAR2(60 CHAR)
FISCAL_QUARTER_END_DATE                   DATE
FISCAL_QUARTER_TIME_SPAN                   NUMBER(5)
FISCAL_QUARTER_LONG_DESC                   VARCHAR2(60 CHAR)
FISCAL_QUARTER_SHORT_DES                   VARCHAR2(60 CHAR)
FISCAL_YEAR_END_DATE                        DATE
FISCAL_YEAR_TIME_SPAN                        NUMBER(5)
FISCAL_YEAR_LONG_DESCRIP                   VARCHAR2(60 CHAR)
FISCAL_YEAR_SHORT_DESCRI                   VARCHAR2(60 CHAR)
CALENDAR_QUARTER_END_DAT                   DATE
CALENDAR_QUARTER_TIME_SP                   NUMBER(5)
CALENDAR_QUARTER_LONG_DE                   VARCHAR2(60 CHAR)
CALENDAR_QUARTER_SHORT_D                   VARCHAR2(60 CHAR)
CALENDAR_YEAR_END_DATE                    DATE
CALENDAR_YEAR_TIME_SPAN                   NUMBER(5)
CALENDAR_YEAR_LONG_DESCR                   VARCHAR2(60 CHAR)
CALENDAR_YEAR_SHORT_DESC                   VARCHAR2(60 CHAR)You can get the same information from user_cube_attributes
SQL> select attribute_name, data_precision from user_cube_attributes where dimension_name = 'TIME' and data_type = 'NUMBER';
ATTRIBUTE_NAME                 DATA_PRECISION
TIME_SPAN
MONTH_TIME_SPAN                    5
FISCAL_QUARTER_TIME_SPAN              5
FISCAL_YEAR_TIME_SPAN                   5
CALENDAR_QUARTER_TIME_SPAN              5
CALENDAR_YEAR_TIME_SPAN               5

INI: XOQ-01600: OLAP DML error "ORA-4030: out of process memory" OLAP PGA S

Hi All ,
While executing the cube generation I am getting an error. Anybody knows the reason ? I have amended the olap_page_pool_size to 200MB and it doesn't help at all .
INI: error creating a definition manager, Generic at TxsOqConnection::generic<BuildProcess>INI: XOQ-01600: OLAP DML error "ORA-4030: out of process memory when trying to allocate 82860 bytes (OLAP PGA Stack,xsVPBlankParm: PPARM)" while executing DML "SYS.AWXML!R11_COMPILE_PARTITIONS('TIME.DIMENSION')", Generic at TxsOqStdFormCommand::execute
Thanks in advance,
Debashis

HI David ,
Thanks for the reply.
My Time Dimension having 10 years of data in day level granularity and Fact table is not partitioned and having only one month of data as 299 records .
Just to let you know that we define two hierarchy level under TIMES one is "ALL levels" and another is Detail where END_DATE has been defaulted with some value and TIME_SPAN is set mapped to the Times table column having distinct value 1 for each records .Also the Member specified as ROW_WID of the Time table.
Just to let you know we have ran(Maintain from Dimension hierarchy) 'Product' and 'Position' dimension individually and it works fine i.e Load ,Compile and Sync process works fine but while run Times it is throwing issue :
ORA-4030: out of process memory when trying to allocate 59340 bytes (OLAP PGA Stack,xsVPBlankParm: PPARM)" while executing DML
we run the Times hierarchy from OLAPTRAIN and it was perfectly fine . Not sure with our time Dim definition .
Any clue ?
Many Thanks,
Debashis

Help on OLAP DML function – "joinchars"

Hi,
We have built a cube called 'CubeTest' which has a measure called 'TestMeasure' of decimal data type, using Oracle AWM v10.2.0.3.0A.
Now, I am using "Oracle OLAP Calculations v1.2.5", as available on OTN homepage, to define my own calculated measures using OLAP DML for this cube.
I have defined the following two measures (for both, Calculation Type is 'Equation' and both are using free-form equations defined over TestMeasure):
1. Calculated_Measure1
2. Calculated_Measure2
Now, I want to define a third calculated measure in a way that it represents a concatenation of the above two measures suffixed with some standard text.
e.g. A Typical value of the third calculated measure will be like:
Calculated_Measure1 + 'ABC' + Calculated_Measure2 + 'XYZ'
Here, the '+' sign indicates the idea of concatenation.
To achieve the above result, I am using the OLAP DML function "joinchars" to define a free-form equation like the one below:
joinchars(Calculated_Measure1,'ABC',Calculated_Measure2,'XYZ')
Now, the issue is that calculation like the one above, using joinchars is not being created successfully. I tried pre-qualifying (and not pre-qualifying) the names of the calculated measures with the cube name and also experimenting with the “Show” command. Also, once the calculation definition fails to get created, I am not even being able to attach my AW in R/W mode as I get the error as below:
oracle.AWXML.AWException: java.lang.NullPointerExceptionat oracle.AWXML.AW.readAWDefinitions(AW.java:1339)at oracle.olap.awm.dataobject.aw.WorkspaceDO.getModelAW(WorkspaceDO.java:803)at oracle.olap.awm.dataobject.aw.WorkspaceDO.getModelAW(WorkspaceDO.java:749)at oracle.olap.awm.navigator.node.WorkspaceNode.getModelerViewChildren(WorkspaceNode.java:368)at oracle.olap.awm.navigator.node.WorkspaceNode.getChildren(WorkspaceNode.java:341)at oracle.olap.awm.navigator.node.BaseNodeModel.refreshData(BaseNodeModel.java:74)at oracle.olap.awm.navigator.node.BaseNodeModel.dTreeItemExpanding(BaseNodeModel.java:221)at oracle.bali.ewt.dTree.DTreeDeferredParent.__fireExpansionChanging(Unknown Source)at oracle.bali.ewt.dTree.DTreeDeferredParent.setExpanded(Unknown Source)at oracle.olap.awm.navigator.node.BaseNode.expandHelper(BaseNode.java:2186)at oracle.olap.awm.navigator.node.BaseNode.access$400(BaseNode.java:109)at oracle.olap.awm.navigator.node.BaseNode$ExpansionThread.run(BaseNode.java:2136)Caused by: java.lang.NullPointerExceptionat oracle.AWXML.AW.readAWDefinitions(AW.java:1313)... 11 more
For the above issue, I have the following questions to seek your help on:
1. First, obviously, to know what is wrong with the usage of "joinchars" in this scenario.
2. If we use Oracle OLAP Calculations v1.2.5 to define any calculations, and if for some reason, the calculation is not defined successfully, is there any way to see what went wrong and where (this is because if your calculation definition fails, the Oracle OLAP Calculations v1.2.5 utility just exits out without giving any significant information on the reason for failures).
3. When we create any new calculation and then click on “Define Calculations” button, the Oracle OLAP Calculations v1.2.5 utility prompts us with the message “Do you want to update the AW views after creating the calculation (Y/N)? – Can you please help me with the details on the implications of stating a Y or N to this message.
Any help on these questions is much appreciated.
Thanks and Regards,
Piyush

Piyush..
The Error you get on using the rpr command is a display error, its not a functionality issue. Think of this as something similar to the sqlplus buffer overflow issue if you have a pl/sql program which outputs a lot of dbms_output.put_line statements.
So if you get a display error, restrict the cube or the dimensions to a reasonable number and check your output. Example: Take every user dimension and restrict them to a few values... (say, 5 products, 1 channel, 1 location, 1 organization, 2 time periods)..
Rpr <<expression>>
will return the expression for every cell in status.. Depending on the dimensions that the expression is based on, for every dimension depending on the number of values (members) in status, the <<expression>> is evaluated and output'ed.
No of cells in report is Cross product of each dimensions status (statlength).. For example above.. 5*1*1*1*2 = 10 cells.
Shw <<expression>>
will return the expression for the first cell in status.. 1st value (member) in status for every dimension that <<expression>> depends on.
Hence Shw <<expressions>> does not lead to a display error since the output is restricted (small).
Using the OLAP Calc utility to define the formula (the utility uses java olap apis), you may need to do something to protect the single quotes so that the expression gets evaluated with single quotes in the OLAP DML formula.
You can try...
joinchars(CUBE1_CMEAS1, \'ABC\', CUBE1_CMEAS2, \'XYZ\')
If above doesn't work, just ask for help regd how to translate a formula expression containing single quotes (formula is correct in OLAP DML) into the AW via the Spreadheet utility.
HTH
Shankar

XOQ-01600: OLAP DML error while executing DML "SYS.AWXML!R11_LOAD_DIM"

hi all,
I am trying to do the tutorial Building OLAP 11g Cubes (http://st-curriculum.oracle.com/obe/db/11g/r1/olap/cube/buildicubes.htm), but when I try to "Maintain Cube SALES_CUBE" I get the following error:
An error has occurred on the server
Error class: Express Failure
Server error descriptions:
INI: error creating a definition manager, Generic at TxsOqConnection::generic<BuildProcess>
INI: ORA-35571: The maximum number of load errors has occurred. No changes from this step were committed to the database.
XOQ-01600: OLAP DML error while executing DML "SYS.AWXML!R11_LOAD_DIM", Generic at TxsOqStdFormCommand::execute
INI: XOQ-01601: error while loading data for Cube Dimension "OLAPTRAIN.PRODUCT" into the analytic workspace, Generic at TxsOqStdFormCommand::callR11LoadDim
at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.executeBuild(Unknown Source)
at oracle.olap.awm.wizard.awbuild.UBuildWizardHelper$2.construct(Unknown Source)
at oracle.olap.awm.ui.SwingWorker$2.run(Unknown Source)
at java.lang.Thread.run(Thread.java:662)
Can anyone help me?
Thanks,
Carlos

I have seen this (in 11.1.0.7, I believe) when the metadata cache ("kgl") gets out of synch with the data dictionary. Specifically there is a flag that determines if prefixes get added to dimension members ("use surrogates" in AWM terms) that becomes false instead of true. If you look at the generated SQL in the OUTPUT column of the CUBE_BUILD_LOG you may find that sometimes a prefix is added to dimension members (e.g. "LEAF_LEVEL_" || dim_table.leaf_column) and othertimes it is not (e.g. just dim_table.leaf_column). A workaround if this is the case may be to execute the following (as dba) before building the dimension.
alter system flush shared_pool;

Problem with OLAP DML

Dear All,
We are using OLAP DML to work with multi-dimensional data on an Analytic workspace. How do you access pre-stored multi dimensional variables set up in a analytic workspace, using OLAP API's.
How/Is it possible to load Cube data from a multi-dimensional variable ?
How or from where do we setup OLAP WORKSHEET to work with OLAP DML ??
Regards,
Subhankar

Jean-Marc,
I had an email from one of my colleagues in development and has kindly explained some errors in my previous posting. In 10.2 and earlier, relational import/export should do as good a job as EIF, except that these utilities are slower (due to the need to text encode the EIF data) and less granular (you can only export an entire schema at a time).
Fortunately, there is no need to worry about the various objects that comprise and AW. We manage all that for you directly inside the database.
However, the performance overhead is enough that for clients with the know-how, it's usually recommended to use EIF instead. That being said, the particular problem you are having seem extreme since you should not see a "15 minutes" to "hangs" slowdown when using relational import.
Have you tried monitoring the export job via Enterprise Manager to check the wait events which might be occuring when the system hangs? Are there any messages in the alert log?
It might be a good idea to open a TAR with Support to try and diagnose this issue.
Keith Laker
Oracle EMEA Consulting
OLAP Blog: http://oracleOLAP.blogspot.com/
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DM Blog: http://oracledmt.blogspot.com/
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OWB Wiki : http://wiki.oracle.com/page/Oracle+Warehouse+Builder
DW on OTN : http://www.oracle.com/technology/products/bi/db/11g/index.html

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