Merging Two OLAP databases

Hi ,
I have 2 databases "BI datawarhouse" and "BI datawarehouse Dev" that are the same (same Cubes and roles and ...)but every one of them has some additions. Is there any way to compare them in order to merge them in single database
instead of 2 ?
Thanks

Hello again, Jorje,
Given the fact that this is a random Tuesday morning, I forgot about the Synchronization Database Wizard that resides at the SSAS level (I presume that you are using Analysis Services). :)
To quote from the description of this wizard:
The Synchronize Database Wizard makes two Analysis Services databases equivalent by copying the data and metadata a database on
a source server to a database on a destination server. While the wizard synchronizes the data between the two databases, users can continue to query the destination database. After synchronization finishes, Analysis Services automatically switches the users
to the newly copied data and metadata, and drops the old data from the destination database.
Beside the syncing the data, this wizard also allows you to sync the roles between the two databases as you can see in the following image
You can have a short read about this wizard and how to use it by clicking on this
link. Although the page is for SQL Server 2012, there is an equivalent article for 2008 (R2) and 2005.
In conclusion, while the first method from the post is not obsolete, the second one is more elegant :).
To give you also a quick scenario to see if everything is working fine (and not affect something in case anything goes wrong):
- have Database A and Database B which need to be synced. Create an empty SSAS database, called
Database C, for example.
- create a backup of Database A and restore it over Database C with the overwrite option
- sync Database B with Database C
- perform checks to ensure that data in A and B are found in C.
Best regards,
Razvan
Per aspera ad astra!
journeyintobi.com

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Hello!
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GOOD
explain plan for
select e.employee_name,
 e.worker_id id,
 e.vac_ent "Vac Ent",
 e.vac_taken "Vac Taken",
 e.vac_presched "Vac PreSched",
 e.vac_remain "Vac Remain",
 e.banked_hours "Banked Hours",
 e.banked_taken "Banked Hours Taken",
 e.banked_presched "Banked Hours Presched",
 e.banked_remain "Banked Hours Remain",
 e.edo_earned "EDO Hours Earned",
 e.edo_taken "EDO Hours Taken",
 e.edo_presched "EDO Hours Presched",
 e.edo_remain "EDO Hours Remain",
 e.ado_earned "ADO Hours Earned",
 e.ado_taken "ADO Hours Taken",
 e.ado_presched "ADO Hours Presched",
 e.ado_remain "ADO Hours Remain"
from tas.benefit_summary_curr_year_v e /* USESYSDATEFORSECURITY */
where 1 = 1
 and (e.worker_id in
 (select worker_id
 from worker_cost_centre_v ecc2
 where ecc2.cost_centre = '100033'
 and ((ecc2.effective_date <= dtutil.todate('2013/10/08') and
 ecc2.expiration_date >= dtutil.todate('2013/10/08')) or
 (ecc2.effective_date <= dtutil.todate('2013/11/08') and
 ecc2.expiration_date >= dtutil.todate('2013/11/08')) or
 (ecc2.effective_date >= dtutil.todate('2013/10/08') and
 ecc2.expiration_date <= dtutil.todate('2013/11/08')))))
 and pkg_taw_security.user_worker_access('CA17062',
 'TIMEKEEPER',
 e.worker_id,
 trunc(sysdate)) = 1
union
select 'ZZZTOTALS',
 sum(e.vac_ent),
 sum(e.vac_taken),
 sum(e.vac_presched),
 sum(vac_remain),
 sum(e.banked_hours),
 sum(e.banked_taken),
 sum(e.banked_presched),
 sum(e.banked_remain),
 sum(e.edo_earned),
 sum(e.edo_taken),
 sum(e.edo_presched),
 sum(e.edo_remain),
 sum(e.ado_earned),
 sum(e.ado_taken),
 sum(e.ado_presched),
 sum(e.ado_remain)
from tas.benefit_summary_curr_year_v e
where 1 = 1
 and (e.worker_id in
 (select worker_id
 from worker_cost_centre_v ecc2
 where ecc2.cost_centre = '100033'
 and ((ecc2.effective_date <= dtutil.todate('2013/10/08') and
 ecc2.expiration_date >= dtutil.todate('2013/10/08')) or
 (ecc2.effective_date <= dtutil.todate('2013/11/08') and
 ecc2.expiration_date >= dtutil.todate('2013/11/08')) or
 (ecc2.effective_date >= dtutil.todate('2013/10/08') and
 ecc2.expiration_date <= dtutil.todate('2013/11/08')))))
 and pkg_taw_security.user_worker_access('CA17062',
 'TIMEKEEPER',
 e.worker_id,
 trunc(sysdate)) = 1
order by 1;
select * from table(dbms_xplan.display);
GOOD PLAN_TABLE_OUTPUT
Plan hash value: 432971565
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 2 | 274 | 14 (43)| 00:00:01 |
| 1 | SORT UNIQUE | | 2 | 274 | 13 (70)| 00:00:01 |
| 2 | UNION-ALL | | | | | |
| 3 | HASH GROUP BY | | 1 | 66 | 6 (34)| 00:00:01 |
| 4 | NESTED LOOPS | | | | | |
| 5 | NESTED LOOPS | | 1 | 66 | 4 (0)| 00:00:01 |
| 6 | NESTED LOOPS | | 1 | 44 | 3 (0)| 00:00:01 |
|* 7 | TABLE ACCESS BY INDEX ROWID | WORKER_COST_CENTRE_TBL | 1 | 29 | 2 (0)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 29 | | 1 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | BENEFIT_IND | 1 | 15 | 1 (0)| 00:00:01 |
|* 10 | INDEX UNIQUE SCAN | WORKER_PK | 1 | | 1 (0)| 00:00:01 |
| 11 | TABLE ACCESS BY INDEX ROWID | WORKER_TBL | 1 | 22 | 1 (0)| 00:00:01 |
| 12 | SORT AGGREGATE | | 1 | 208 | 7 (43)| 00:00:01 |
| 13 | VIEW | VM_NWVW_0 | 1 | 208 | 6 (34)| 00:00:01 |
| 14 | HASH GROUP BY | | 1 | 66 | 6 (34)| 00:00:01 |
| 15 | NESTED LOOPS | | | | | |
| 16 | NESTED LOOPS | | 1 | 66 | 5 (20)| 00:00:01 |
| 17 | NESTED LOOPS | | 1 | 44 | 4 (25)| 00:00:01 |
| 18 | SORT UNIQUE | | 1 | 29 | 2 (0)| 00:00:01 |
|* 19 | TABLE ACCESS BY INDEX ROWID| WORKER_COST_CENTRE_TBL | 1 | 29 | 2 (0)| 00:00:01 |
|* 20 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 29 | | 1 (0)| 00:00:01 |
|* 21 | INDEX RANGE SCAN | BENEFIT_IND | 1 | 15 | 1 (0)| 00:00:01 |
|* 22 | INDEX UNIQUE SCAN | WORKER_PK | 1 | | 1 (0)| 00:00:01 |
| 23 | TABLE ACCESS BY INDEX ROWID | WORKER_TBL | 1 | 22 | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
 7 - filter("X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/10/08') OR
 "X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/11/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/11/08') OR
 "X"."EFFECTIVE_DATE">="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE"<="DTUTIL"."TODATE"('2013/11/08'))
 8 - access("X"."COST_CENTRE"='100033')
 9 - access("X"."WORKER_ID"="X"."WORKER_ID")
 filter(TO_CHAR(INTERNAL_FUNCTION("X"."ACTIVITY_DATE"),'YYYY')>=TO_CHAR(SYSDATE@!,'YYYY') AND
 "PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"X"."WORKER_ID",TRUNC(SYSDATE@!))=1)
10 - access("X"."WORKER_ID"="X"."WORKER_ID")
19 - filter("X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/10/08') OR
 "X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/11/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/11/08') OR
 "X"."EFFECTIVE_DATE">="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE"<="DTUTIL"."TODATE"('2013/11/08'))
20 - access("X"."COST_CENTRE"='100033')
21 - access("X"."WORKER_ID"="X"."WORKER_ID")
 filter(TO_CHAR(INTERNAL_FUNCTION("X"."ACTIVITY_DATE"),'YYYY')>=TO_CHAR(SYSDATE@!,'YYYY') AND
 "PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"X"."WORKER_ID",TRUNC(SYSDATE@!))=1)
22 - access("X"."WORKER_ID"="X"."WORKER_ID")
The bad plan - based off the same query but run against a different database.
Bad PLAN_TABLE_OUTPUT
Plan hash value: 3742309457
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 4 | 1158 | | 10065 (2)| 00:02:01 |
| 1 | SORT UNIQUE | | 4 | 1158 | | 10064 (51)| 00:02:01 |
| 2 | UNION-ALL | | | | | | |
|* 3 | HASH JOIN | | 3 | 915 | | 5031 (2)| 00:01:01 |
| 4 | JOIN FILTER CREATE | :BF0000 | 1 | 29 | | 2 (0)| 00:00:01 |
|* 5 | TABLE ACCESS BY INDEX ROWID | WORKER_COST_CENTRE_TBL | 1 | 29 | | 2 (0)| 00:00:01 |
|* 6 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 28 | | | 1 (0)| 00:00:01 |
|* 7 | VIEW | BENEFIT_SUMMARY_CURR_YEAR_V | 204K| 53M| | 5027 (1)| 00:01:01 |
| 8 | HASH GROUP BY | | 204K| 7403K| 9656K| 5027 (1)| 00:01:01 |
| 9 | JOIN FILTER USE | :BF0000 | 204K| 7403K| | 3040 (2)| 00:00:37 |
|* 10 | HASH JOIN | | 204K| 7403K| 5392K| 3040 (2)| 00:00:37 |
| 11 | TABLE ACCESS FULL | WORKER_TBL | 162K| 3485K| | 584 (1)| 00:00:08 |
|* 12 | INDEX FULL SCAN | BENEFIT_IND | 204K| 3001K| | 1927 (2)| 00:00:24 |
| 13 | SORT AGGREGATE | | 1 | 243 | | 5032 (2)| 00:01:01 |
|* 14 | HASH JOIN RIGHT SEMI | | 16 | 3888 | | 5031 (2)| 00:01:01 |
| 15 | JOIN FILTER CREATE | :BF0001 | 1 | 29 | | 2 (0)| 00:00:01 |
|* 16 | TABLE ACCESS BY INDEX ROWID| WORKER_COST_CENTRE_TBL | 1 | 29 | | 2 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 28 | | | 1 (0)| 00:00:01 |
|* 18 | VIEW | BENEFIT_SUMMARY_CURR_YEAR_V | 204K| 41M| | 5027 (1)| 00:01:01 |
| 19 | HASH GROUP BY | | 204K| 7403K| 9656K| 5027 (1)| 00:01:01 |
| 20 | JOIN FILTER USE | :BF0001 | 204K| 7403K| | 3040 (2)| 00:00:37 |
|* 21 | HASH JOIN | | 204K| 7403K| 5392K| 3040 (2)| 00:00:37 |
| 22 | TABLE ACCESS FULL | WORKER_TBL | 162K| 3485K| | 584 (1)| 00:00:08 |
|* 23 | INDEX FULL SCAN | BENEFIT_IND | 204K| 3001K| | 1927 (2)| 00:00:24 |
Predicate Information (identified by operation id):
 3 - access("E"."WORKER_ID"="X"."WORKER_ID")
 5 - filter("X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/10/08') OR "X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/11/08')
 AND "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/11/08') OR
 "X"."EFFECTIVE_DATE">="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE"<="DTUTIL"."TODATE"('2013/11/08'))
 6 - access("X"."COST_CENTRE"='100033')
 7 - filter("PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"E"."WORKER_ID",TRUNC(SYSDATE@!))=1
10 - access("X"."WORKER_ID"="X"."WORKER_ID")
12 - filter(TO_CHAR(INTERNAL_FUNCTION("X"."ACTIVITY_DATE"),'YYYY')>=TO_CHAR(SYSDATE@!,'YYYY'))
14 - access("E"."WORKER_ID"="X"."WORKER_ID")
16 - filter("X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/10/08') OR "X"."EFFECTIVE_DATE"<="DTUTIL"."TODATE"('2013/11/08')
 AND "X"."EXPIRATION_DATE">="DTUTIL"."TODATE"('2013/11/08') OR
 "X"."EFFECTIVE_DATE">="DTUTIL"."TODATE"('2013/10/08') AND
 "X"."EXPIRATION_DATE"<="DTUTIL"."TODATE"('2013/11/08'))
17 - access("X"."COST_CENTRE"='100033')
18 - filter("PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"E"."WORKER_ID",TRUNC(SYSDATE@!))=1
21 - access("X"."WORKER_ID"="X"."WORKER_ID")
23 - filter(TO_CHAR(INTERNAL_FUNCTION("X"."ACTIVITY_DATE"),'YYYY')>=TO_CHAR(SYSDATE@!,'YYYY'))
So I can definitely tune the query to work against my acceptance database - that isn't really the problem. The problem is that I can't count on the optimizations to be the same between development and acceptance. So if I move this to production, how do I know I don't get a third plan?!?!?
Can anyone suggest anything that might cause what I'm seeing above - and / or anything that I can do to prevent it. This is just one query out of 10,000 or so that I'm working with - we are migrating from Oracle 9 to 11g and the queries all worked perfectly on 9.
Thanks in Advance!
Cory Aston

Here are the two plans for the simplified query - using the OUTLINE format as per your request
This is the bad plan from acceptance.
PLAN_TABLE_OUTPUT
SQL_ID 3zfrdhqpqk1mw, child number 1
select /*+ gather_plan_statistics */ w.worker_id, w.worker_name
from worker_v w, worker_cost_centre_v c
where w.worker_id = c.worker_id and c.effective_date <=
trunc(sysdate) and c.expiration_date >= trunc(sysdate) and
c.cost_centre = '100033' and pkg_taw_security.user_worker_access('CA1
7062', 'TIMEKEEPER',
 w.worker_id,
 trunc(sysdate)) = 1 order by w.worker_name
Plan hash value: 1726112176
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | | | 589 (100)| |
| 1 | SORT ORDER BY | | 4 | 400 | 589 (2)| 00:00:08 |
|* 2 | HASH JOIN | | 4 | 400 | 588 (1)| 00:00:08 |
| 3 | VIEW | WORKER_COST_CENTRE_V | 4 | 124 | 2 (0)| 00:00:01 |
|* 4 | TABLE ACCESS BY INDEX ROWID| WORKER_COST_CENTRE_TBL | 4 | 116 | 2 (0)| 00:00:01 |
|* 5 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 28 | | 1 (0)| 00:00:01 |
|* 6 | VIEW | WORKER_V | 162K| 10M| 584 (1)| 00:00:08 |
| 7 | TABLE ACCESS FULL | WORKER_TBL | 162K| 3485K| 584 (1)| 00:00:08 |
Outline Data
/*+
 BEGIN_OUTLINE_DATA
 IGNORE_OPTIM_EMBEDDED_HINTS
 OPTIMIZER_FEATURES_ENABLE('11.2.0.3')
 DB_VERSION('11.2.0.3')
 OPT_PARAM('optimizer_index_cost_adj' 10)
 ALL_ROWS
 OUTLINE_LEAF(@"SEL$2")
 OUTLINE_LEAF(@"SEL$3")
 OUTLINE_LEAF(@"SEL$1")
 NO_ACCESS(@"SEL$1" "C"@"SEL$1")
 NO_ACCESS(@"SEL$1" "W"@"SEL$1")
 LEADING(@"SEL$1" "C"@"SEL$1" "W"@"SEL$1")
 USE_HASH(@"SEL$1" "W"@"SEL$1")
 FULL(@"SEL$2" "X"@"SEL$2")
 INDEX_RS_ASC(@"SEL$3" "X"@"SEL$3" ("WORKER_COST_CENTRE_TBL"."COST_CENTRE"
 "WORKER_COST_CENTRE_TBL"."EFFECTIVE_DATE"))
 END_OUTLINE_DATA
Predicate Information (identified by operation id):
 2 - access("W"."WORKER_ID"="C"."WORKER_ID")
 4 - filter("X"."EXPIRATION_DATE">=TRUNC(SYSDATE@!))
 5 - access("X"."COST_CENTRE"='100033' AND "X"."EFFECTIVE_DATE"<=TRUNC(SYSDATE@!))
 6 - filter("PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"W"."WORKER_ID",TRUN
 C(SYSDATE@!))=1)
Note
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62 rows selected.
This is the good one from development.
PLAN_TABLE_OUTPUT
SQL_ID 3zfrdhqpqk1mw, child number 0
select /*+ gather_plan_statistics */ w.worker_id, w.worker_name
from worker_v w, worker_cost_centre_v c
where w.worker_id = c.worker_id and c.effective_date <=
trunc(sysdate) and c.expiration_date >= trunc(sysdate) and
c.cost_centre = '100033' and pkg_taw_security.user_worker_access('CA1
7062', 'TIMEKEEPER',
 w.worker_id,
 trunc(sysdate)) = 1 order by w.worker_name
Plan hash value: 3435904055
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | | | 5 (100)| |
| 1 | SORT ORDER BY | | 18 | 918 | 5 (20)| 00:00:01 |
| 2 | NESTED LOOPS | | | | | |
| 3 | NESTED LOOPS | | 18 | 918 | 4 (0)| 00:00:01 |
|* 4 | TABLE ACCESS BY INDEX ROWID| WORKER_COST_CENTRE_TBL | 18 | 522 | 2 (0)| 00:00:01 |
|* 5 | INDEX RANGE SCAN | WORKER_CC_CC_IDX | 29 | | 1 (0)| 00:00:01 |
|* 6 | INDEX UNIQUE SCAN | WORKER_PK | 1 | | 1 (0)| 00:00:01 |
| 7 | TABLE ACCESS BY INDEX ROWID | WORKER_TBL | 1 | 22 | 1 (0)| 00:00:01 |
Outline Data
/*+
 BEGIN_OUTLINE_DATA
 IGNORE_OPTIM_EMBEDDED_HINTS
 OPTIMIZER_FEATURES_ENABLE('11.2.0.3')
 DB_VERSION('11.2.0.3')
 OPT_PARAM('optimizer_index_cost_adj' 10)
 ALL_ROWS
 OUTLINE_LEAF(@"SEL$5428C7F1")
 MERGE(@"SEL$2")
 MERGE(@"SEL$3")
 OUTLINE(@"SEL$1")
 OUTLINE(@"SEL$2")
 OUTLINE(@"SEL$3")
 INDEX_RS_ASC(@"SEL$5428C7F1" "X"@"SEL$3" ("WORKER_COST_CENTRE_TBL"."COST_CENTRE"
 "WORKER_COST_CENTRE_TBL"."EFFECTIVE_DATE"))
 INDEX(@"SEL$5428C7F1" "X"@"SEL$2" ("WORKER_TBL"."WORKER_ID"))
 LEADING(@"SEL$5428C7F1" "X"@"SEL$3" "X"@"SEL$2")
 USE_NL(@"SEL$5428C7F1" "X"@"SEL$2")
 NLJ_BATCHING(@"SEL$5428C7F1" "X"@"SEL$2")
 END_OUTLINE_DATA
Predicate Information (identified by operation id):
 4 - filter("X"."EXPIRATION_DATE">=TRUNC(SYSDATE@!))
 5 - access("X"."COST_CENTRE"='100033' AND "X"."EFFECTIVE_DATE"<=TRUNC(SYSDATE@!))
 6 - access("X"."WORKER_ID"="X"."WORKER_ID")
 filter("PKG_TAW_SECURITY"."USER_WORKER_ACCESS"('CA17062','TIMEKEEPER',"X"."WORKER_ID",TRUN
 C(SYSDATE@!))=1)
60 rows selected.
I'm not sure how to interpret what dbms_xplan is telling me above. Any help would be greatly appreciated!!
Thanks,
Cory

APEX Application accessing data from two different databases

Hi All,
Currently as we all know that APEX Application resides in database and is connected to the schema of that database.
I want APEX Application to be running and accessing data from two different databases. Elaborating my question,
Currently, my APEX Production Application is connected with XXXX Schema of DB1 Database(Where APEX Resides). Now I want to add some pages into this APEX Application for REPORT Purpose, But I want to connect this REPORT APEX Pages to get data from Different Schema YYYY for Database DB2.
Is it possible to configure this scenario?
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Thanks
Nil

1. If you do the joining of two or more tables in DB1 then all data is pulled over to DB1 and then the join is executed: so more data over the databaselink and more work for DB1. Better keep the joining stuff where the data resides and just pull exactly that data over that you need.
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Please help me to merge two places.sqlite to get my old and New history at the same time, every time i rename my two places.sqlite to see my old and new history

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