Secondary Index on Table having 0 record?

Dear All,
Currently one of the SAP table, BKORM, has 0 records. When we execute statement "select * from BKORM" it fetches 0 record and took more than a minute. When we create secondary index, the same statement provides result in a second.
My question is, what actually Optimizer do when there isn't any record. What could be the reason ?
I found SAP Note 305225 which says its an Oracle bug but it is with the case when JOINs are used. Through SQL Trace (Transaction ST05) i tried to figure out but it results the same. Any suggestions or hints?
Thanks
Nayab

better ask this question in abap or basic forum
A,

Similar Messages

Creation of secondary indexes for table "RSBATCHCTRL_PAR" failed

Hi ,
We have installed EHP1 on our BI7.0 system successfully, later we are trying to apply SPS01 for this EHP but we got the follwoing error during TBATG conversion.
2 EGT092 Conversion of table "RSBATCHCTRL_PAR" was restarted
2 EGT241 The conversion is continued at step "6"
2 EGT246 Type of conversion: "T" -> "T"
2 EGT240XBegin step "RSBATCHCTRL_PAR-STEP6":
4 EGT281 sql:
4 ED0314 CREATE
4 ED0314 INDEX [RSBATCHCTRL_PAR~DB] ON [RSBATCHCTRL_PAR]
4 ED0314 ( [JOBNAME] ,
4 ED0314 [JOBCOUNT] ,
4 ED0314 [SERVER] ,
4 ED0314 [HOST] ,
4 ED0314 [WP_NO] ,
4 ED0314 [WP_PID] ,
4 ED0314 [PROCESS_TYPE] )
4 ED0314 WITH ( ONLINE=OFF )
4 ED0314 ON [PRIMARY]
2 ED0314 Line 1: Incorrect syntax near '('.
3 EDA093 "DDL time(___1):" ".........6" milliseconds
2EEGT236 The SQL statement was not executed
2EEDI006 Index " " could not be created completely in the database
2EEGT221 Creation of secondary indexes for table "RSBATCHCTRL_PAR" failed
2EEGT239 Error in step "RSBATCHCTRL_PAR-STEP6"
2 EGT253XTotal time for table "RSBATCHCTRL_PAR": "000:00:00"
2EEGT094 Conversion could not be restarted
2 EGT067 Request for "RSBATCHCTRL_PAR" could not be executed
1 ED0327XProcess..................: "ferrari_12"
1 ED0302X=========================================================================
1 ED0314 DD: Execution of Database Operations
1 ED0302 =========================================================================
1 ED0327 Process..................: "ferrari_12"
1 ED0319 Return code..............: "0"
1 ED0314 Phase 001................: < 1 sec. (Preprocessing of TBATG)
1 ED0314 Phase 002................: < 1 sec. (Partitioning)
1 ED0309 Program runtime..........: "< 1 sec."
1 ED0305 Date, time...............: "03.06.2009", "12:47:21"
1 ED0318 Program end==============================================================
1 ETP166 CONVERSION OF DD OBJECTS (TBATG)
1 ETP110 end date and time : "20090603124721"
1 ETP111 exit code : "8"
1 ETP199 ######################################
System properties:
SAP - BI7.0 with EHP1
Database - MSSQL 2000
OS - Windows2003
Please suggest.
Thanks in advance,
Pavan.

> We have installed EHP1 on our BI7.0 system successfully, later we are trying to apply SPS01 for this EHP but we got the follwoing error during TBATG conversion.
> 2 ED0314 Line 1: Incorrect syntax near '('.
> 3 EDA093 "DDL time(___1):" ".........6" milliseconds
> 2EEGT236 The SQL statement was not executed
This is a known problem with SQL Server 2000, see
Note 1180553 - Syntax error 170 during index creation on SQL 2000
I highly suggest upgrading to SQL Server 2005 or 2008.
Markus

Urgent!!! Modify column of a table having records

Dear all,
I have a table with a column VARCHAR2(12) and I need to modify this column into VARCHAR2(9) without losing any data! s there any workaround?
Thanx a lot!!

This code was posted in one of the previous Oracle magazines:
The Pl/Sql procedure to rename the column must be compiled in to the database you require to rename columns in - one note I would run this as SYS:
create or replace procedure RenameColumn
(pUserName varchar2,
pTableName varchar2,
pOldColumnName varchar2,
pNewColumnName varchar2
is
vUserName dba_users.userName%type :=
upper(ltrim(rtrim(pUserName)));
vTableName dba_tables.table_name%type :=
upper(ltrim(rtrim(pTableName)));
vOldColumnName dba_tab_columns.column_name%type :=
upper(ltrim(rtrim(pOldColumnName)));
vNewColumnName dba_tab_columns.column_name%type :=
upper(ltrim(rtrim(pNewColumnName)));
vErrorMessage varchar2(4000);
eNotAuthorizedUser exception; /* -20101 */
eInvalidUser exception; /* -20102 */
eInvalidTable exception; /* -20103 */
eInvalidOldColumn exception; /* -20104 */
eInvalidNewColumn exception; /* -20105 */
cursor csrCheckUser
(pUser dba_users.userName%type)
is
select '1'
from dba_users
where userName = pUser;
cursor csrCheckTable
(pUser dba_tables.owner%type,
pTable dba_tables.table_name%type)
is
select '1'
from dba_tables
where owner = pUser
and table_name = pTable;
cursor csrCheckExistingColumn
(pUser dba_tables.owner%type,
pTable dba_tables.table_name%type,
pColumn dba_tab_columns.column_name%type)
is
select '1'
from dba_tab_columns
where owner = pUser
and table_name = pTable
and column_name = pColumn;
vDummy char(1);
begin
if user <> 'SYS'
then
raise eNotAuthorizedUser;
end if;
/* Check the value of vUserName */
if vUserName is null
then
raise eInvalidUser;
end if;
open csrCheckUser(vUserName);
fetch csrCheckUser into vDummy;
if csrCheckUser%notfound
then
close csrCheckUser;
raise eInvalidUser;
end if;
close csrCheckUser;
/* Check the value of vTableName */
if vTableName is null
then
raise eInvalidTable;
end if;
open csrCheckTable(vUserName, vTableName);
fetch csrCheckTable into vDummy;
if csrCheckTable%notfound
then
close csrCheckTable;
raise eInvalidTable;
end if;
close csrCheckTable;
/* Check the value of vOldColumnName */
if vOldColumnName is null
then
raise eInvalidOldColumn;
end if;
open csrCheckExistingColumn(vUserName, vTableName, vOldColumnName);
fetch csrCheckExistingColumn into vDummy;
if csrCheckExistingColumn%notfound
then
close csrCheckExistingColumn;
raise eInvalidOldColumn;
end if;
close csrCheckExistingColumn;
/* Check the value of vNewColumnName */
if vNewColumnName is null
then
raise eInvalidNewColumn;
end if;
open csrCheckExistingColumn(vUserName, vTableName, vNewColumnName);
fetch csrCheckExistingColumn into vDummy;
if csrCheckExistingColumn%found
then
close csrCheckExistingColumn;
raise eInvalidNewColumn;
end if;
close csrCheckExistingColumn;
/* Update the row in col$ Oracle dictionary */
update col$
set name = vNewColumnName
where (obj#, col#) in
(select obj#,
col#
from col$
where name = vOldColumnName
and obj# = (select obj#
from obj$
where name = vTableName
and owner# = (select user_id
from dba_users
where username = vUserName)));
commit;
exception
when eNotAuthorizedUser
then
vErrorMessage := 'User ' || user ||
' is not authorized to run this procedure.';
raise_application_error(-20101, vErrorMessage);
when eInvalidUser
then
vErrorMessage := 'Invalid user name: ' ||
pUserName || '.';
raise_application_error(-20102, vErrorMessage);
when eInvalidTable
then
vErrorMessage := 'Invalid table name: ' ||
pTableName || '.';
raise_application_error(-20103, vErrorMessage);
when eInvalidOldColumn
then
vErrorMessage := 'Invalid old column name: ' ||
pOldColumnName || '.';
raise_application_error(-20104, vErrorMessage);
when eInvalidNewColumn
then
vErrorMessage := 'Invalid new column name: ' ||
pNewColumnName || '.';
raise_application_error(-20105, vErrorMessage);
end RenameColumn;
Once you have the above in and compiled okay then you can rename you column names by:
begin
RenameColumn('SCOTT', 'EMPTEST', 'SAL', 'SALARY');
end;
also while still connected as SYS, note the parameters SCOTT should be the schema owner which contains the table, EMPTEST is the table name which contains the column, SAL is the old column name and SALARY is the new column name.
Have fun.

What is syntax for inner join of Select statement with Secondary Index

Hi Genies,
                Here i have created the Secondary index for table COEP and also used for select query but there is no improvement in runtime . taking same time for select query without index as well as with index. my code is
SELECT * INTO CORRESPONDING FIELDS OF TABLE ITAB_COEP FROM COEP AS A
             INNER JOIN COBK AS B ON ( A~BELNR = B~BELNR AND A~KOKRS = B~KOKRS AND A~GJAHR = B~GJAHR )
             WHERE A~OBJNR = OBJNR
             AND A~GJAHR = CURRY
             AND B~GJAHR = CURRY
             AND A~RBEST = ''
             AND A~BEKNZ = 'S'
             AND B~BELNR NE WA_COBK-BELNR
             AND B~AWREF_REV = ''
             AND B~AWORG_REV = ''
             AND B~KOKRS = WA_COIOB-KOKRS
             AND B~BLDAT BETWEEN START_DATE AND END_DATE
             AND B~BLART IN ('SA','KA','KR','AB') %_HINTS ORACLE 'INDEX("COEP" "COEP~ZBU")'.
index name is ZBU.
please any one let me know is there any syntax mistakes? but while checking and during the runtime it does'nt shows any error.
Regards,
        Thangam.P

Hi Genies,
                Here i have created the Secondary index for table COEP and also used for select query but there is no improvement in runtime . taking same time for select query without index as well as with index. my code is
SELECT * INTO CORRESPONDING FIELDS OF TABLE ITAB_COEP FROM COEP AS A
             INNER JOIN COBK AS B ON ( A~BELNR = B~BELNR AND A~KOKRS = B~KOKRS AND A~GJAHR = B~GJAHR )
             WHERE A~OBJNR = OBJNR
             AND A~GJAHR = CURRY
             AND B~GJAHR = CURRY
             AND A~RBEST = ''
             AND A~BEKNZ = 'S'
             AND B~BELNR NE WA_COBK-BELNR
             AND B~AWREF_REV = ''
             AND B~AWORG_REV = ''
             AND B~KOKRS = WA_COIOB-KOKRS
             AND B~BLDAT BETWEEN START_DATE AND END_DATE
             AND B~BLART IN ('SA','KA','KR','AB') %_HINTS ORACLE 'INDEX("COEP" "COEP~ZBU")'.
index name is ZBU.
please any one let me know is there any syntax mistakes? but while checking and during the runtime it does'nt shows any error.
Regards,
        Thangam.P

How to use secondary index

Hi abapers,
Iam creating secondary index for the database table MSEG. ....How to write select query for the secondary index that i have created..
Regards,
Ramya

how to create secondary index in tables
https://forums.sdn.sap.com/click.jspa?searchID=933015&messageID=2971112
Guidelines to create secondary index
https://forums.sdn.sap.com/click.jspa?searchID=933015&messageID=2009801
Secondary index;
http://help.sap.com/saphelp_47x200/helpdata/en/cf/21eb2d446011d189700000e8322d00/content.htm
this will definitely help you, dont forget to award points if found helpful

Can we create secondary index for a cluster table

hi
can we create secondary index for a cluster table

Jyothsna,
There seems to be some kind of misunderstanding here. You <i>cannot</i> create a secondary index on a cluster table. A cluster table does not exist as a separate physical table in the database; it is part of a "physical cluster". In the case of BSEG for instance, the physical cluster is RFBLG. The only fields of the cluster table that also exist as fields of the physical cluster are the leading fields of the primary key. Taking again BSEG as the example, the primary key includes the fields MANDT, BUKRS, BELNR, GJAHR, BUZEI. If you look at the structure of the RFBLG table, you will see that it has primary key fields MANDT, BUKRS, BELNR, GJAHR, PAGENO. The first four fields are those that all cluster tables inside BSEG have in common. The fifth field, PAGENO, is a "technical" field giving the sequence number of the current record in the series of cluster records sharing the same primary key.
All the "functional" fields of the cluster table (for BSEG this is field BUZEI and everything beyond that) exist only inside a raw binary object. The database does not know about these fields, it only sees the raw object (the field VARDATA of the physical cluster). Since the field does not exist in the database, it is impossible to create a secondary index on it. If you try to create a secondary index on a cluster table in transaction SE11, you will therefore rightly get the error "Index maintenance only possible for transparent tables".
Theoretically you could get around this by converting the cluster table to a transparent table. You can do this in the SAP dictionary. However, in practice this is almost never a good solution. The table becomes much larger (clusters are compressed) and you lose the advantage that related records are stored close to each other (the main reason for having cluster tables in the first place). Apart from the performance and disk space hit, converting a big cluster table like BSEG to transparent would take extremely long.
In cases where "indexing" of fields of a cluster table is worthwhile, SAP has constructed "indexing tables" around the cluster. For example, around BSEG there are transparent tables like BSIS, BSAS, etc. Other clusters normally do not have this, but that simply means there is no reason for having it. I have worked with the SAP dictionary for over 12 years and I have never met a single case where it was necessary to convert a cluster to transparent.
If you try to select on specific values of a non-transparent field in a cluster without also specifying selections for the primary key, then the database will have to do a serial read of the whole physical cluster (and the ABAP DB interface will have to decompress every single record to extract the fields). The performance of that is monstrous -- maybe that was the reason of your question. However, the solution then is (in the case of BSEG) to query via one of the index tables (where you are free to create secondary indexes since those tables are transparent).
Hope this clarifies things,
Mark

How many SECONDARY INDEXES are created for CLUSTER TABLES?

how many SECONDARY INDEXES are created for CLUSTER TABLES?
please explain.

There seems to be some kind of misunderstanding here. You cannot create a secondary index on a cluster table. A cluster table does not exist as a separate physical table in the database; it is part of a "physical cluster". In the case of BSEG for instance, the physical cluster is RFBLG. The only fields of the cluster table that also exist as fields of the physical cluster are the leading fields of the primary key. Taking again BSEG as the example, the primary key includes the fields MANDT, BUKRS, BELNR, GJAHR, BUZEI. If you look at the structure of the RFBLG table, you will see that it has primary key fields MANDT, BUKRS, BELNR, GJAHR, PAGENO. The first four fields are those that all cluster tables inside BSEG have in common. The fifth field, PAGENO, is a "technical" field giving the sequence number of the current record in the series of cluster records sharing the same primary key.
All the "functional" fields of the cluster table (for BSEG this is field BUZEI and everything beyond that) exist only inside a raw binary object. The database does not know about these fields, it only sees the raw object (the field VARDATA of the physical cluster). Since the field does not exist in the database, it is impossible to create a secondary index on it. If you try to create a secondary index on a cluster table in transaction SE11, you will therefore rightly get the error "Index maintenance only possible for transparent tables".
Theoretically you could get around this by converting the cluster table to a transparent table. You can do this in the SAP dictionary. However, in practice this is almost never a good solution. The table becomes much larger (clusters are compressed) and you lose the advantage that related records are stored close to each other (the main reason for having cluster tables in the first place). Apart from the performance and disk space hit, converting a big cluster table like BSEG to transparent would take extremely long.
In cases where "indexing" of fields of a cluster table is worthwhile, SAP has constructed "indexing tables" around the cluster. For example, around BSEG there are transparent tables like BSIS, BSAS, etc. Other clusters normally do not have this, but that simply means there is no reason for having it. I have worked with the SAP dictionary for over 12 years and I have never met a single case where it was necessary to convert a cluster to transparent.
If you try to select on specific values of a non-transparent field in a cluster without also specifying selections for the primary key, then the database will have to do a serial read of the whole physical cluster (and the ABAP DB interface will have to decompress every single record to extract the fields). The performance of that is monstrous -- maybe that was the reason of your question. However, the solution then is (in the case of BSEG) to query via one of the index tables (where you are free to create secondary indexes since those tables are transparent).

Building secondary Index fails for large number(25,000,000) of records

I am inserting 25,000,000 records of the type:
Key --> Data
[long,String,long] --> [{long,long}, {String}}
using setSecondaryBulkLoad(true) and then build two Secondary indexes on {long,long} and {String} of the data portion.
     private void buildSecondaryIndex(DataAccessLayer dataAccessLayer ) {
          try {
               SecondaryIndex<TDetailSecondaryKey, TDetailStringKey, TDetailStringRecord> secondaryIndex = store.getSecondaryIndex(dataAccessLayer.getPrimaryIndex(), TDetailSecondaryKey.class, SECONDARY_KEY_NAME);
          } catch (DatabaseException e) {
               throw new RuntimeException(e);
It fails when I build the SecondaryIndex probably due to Java Heap Space Error. See the failure trace below.
I do not face this problem when I deal with 250,000 records.
Is there a work around that without haveing to set the memory space configurations of the JVM.
Failure Trace:
java.lang.RuntimeException: Environment invalid because of previous exception: com.sleepycat.je.RunRecoveryException
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.buildSecondaryIndex(TDetailStringDAOInsertTest.java:444)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.insertCellSetInOneTxn(TDetailStringDAOInsertTest.java:280)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.mainTest(TDetailStringDAOInsertTest.java:93)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
     at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
     at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
     at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
     at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
     at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
     at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
     at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
     at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
     at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
     at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: Environment invalid because of previous exception: com.sleepycat.je.RunRecoveryException
     at com.sleepycat.je.dbi.EnvironmentImpl.checkIfInvalid(EnvironmentImpl.java:976)
     at com.sleepycat.je.log.LogManager.getLogEntry(LogManager.java:584)
     at com.sleepycat.je.txn.Txn.undo(Txn.java:713)
     at com.sleepycat.je.txn.Txn.abortInternal(Txn.java:631)
     at com.sleepycat.je.txn.Txn.abort(Txn.java:599)
     at com.sleepycat.je.txn.AutoTxn.operationEnd(AutoTxn.java:36)
     at com.sleepycat.je.Environment.openDb(Environment.java:505)
     at com.sleepycat.je.Environment.openSecondaryDatabase(Environment.java:382)
     at com.sleepycat.persist.impl.Store.openSecondaryIndex(Store.java:684)
     at com.sleepycat.persist.impl.Store.getSecondaryIndex(Store.java:579)
     at com.sleepycat.persist.EntityStore.getSecondaryIndex(EntityStore.java:286)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.buildSecondaryIndex(TDetailStringDAOInsertTest.java:441)
     ... 22 more
Caused by: java.lang.OutOfMemoryError: Java heap space
     at java.util.HashMap.resize(HashMap.java:462)
     at java.util.HashMap.addEntry(HashMap.java:755)
     at java.util.HashMap.put(HashMap.java:385)
     at java.util.HashSet.add(HashSet.java:200)
     at com.sleepycat.je.txn.Txn.addReadLock(Txn.java:964)
     at com.sleepycat.je.txn.Txn.addLock(Txn.java:952)
     at com.sleepycat.je.txn.LockManager.attemptLockInternal(LockManager.java:347)
     at com.sleepycat.je.txn.SyncedLockManager.attemptLock(SyncedLockManager.java:43)
     at com.sleepycat.je.txn.LockManager.lock(LockManager.java:178)
     at com.sleepycat.je.txn.Txn.lockInternal(Txn.java:295)
     at com.sleepycat.je.txn.Locker.nonBlockingLock(Locker.java:288)
     at com.sleepycat.je.dbi.CursorImpl.lockLNDeletedAllowed(CursorImpl.java:2357)
     at com.sleepycat.je.dbi.CursorImpl.lockLN(CursorImpl.java:2297)
     at com.sleepycat.je.dbi.CursorImpl.fetchCurrent(CursorImpl.java:2227)
     at com.sleepycat.je.dbi.CursorImpl.getCurrentAlreadyLatched(CursorImpl.java:1296)
     at com.sleepycat.je.dbi.CursorImpl.getNextWithKeyChangeStatus(CursorImpl.java:1442)
     at com.sleepycat.je.dbi.CursorImpl.getNext(CursorImpl.java:1368)
     at com.sleepycat.je.Cursor.retrieveNextAllowPhantoms(Cursor.java:1587)
     at com.sleepycat.je.Cursor.retrieveNext(Cursor.java:1397)
     at com.sleepycat.je.SecondaryDatabase.init(SecondaryDatabase.java:182)
     at com.sleepycat.je.SecondaryDatabase.initNew(SecondaryDatabase.java:118)
     at com.sleepycat.je.Environment.openDb(Environment.java:484)
     at com.sleepycat.je.Environment.openSecondaryDatabase(Environment.java:382)
     at com.sleepycat.persist.impl.Store.openSecondaryIndex(Store.java:684)
     at com.sleepycat.persist.impl.Store.getSecondaryIndex(Store.java:579)
     at com.sleepycat.persist.EntityStore.getSecondaryIndex(EntityStore.java:286)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.buildSecondaryIndex(TDetailStringDAOInsertTest.java:441)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.insertCellSetInOneTxn(TDetailStringDAOInsertTest.java:280)
     at com.infobionics.ibperformance.TDetailStringDAOInsertTest.mainTest(TDetailStringDAOInsertTest.java:93)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

1. Does the speed of building of secondary index
depend on the type of the data in the key? Will
having integers in secondary key as opposed to string
be better?The byte size of the key and data is significant of course, but the data type is not.
2. How much are we bound of the memory? Lets assume
my memory setting is fixed.
a. I know with current memory settings if I set txn
n on, I have java Heap Error.
So will I be limited on the size of
secondary index or
will it just get really slow swapping
tree information from the disk as it builds it.No. The out-of-memory error was caused by a very large transaction that holds locks. When using small transactions or non-transactional access, you won't have this problem. In general, like most databases, JE writes and reads information to/from disk as needed.
b. Is there any other way of speeding the build of
f secondary database?No, other then general performance tuning, nothing I know of.
c. Will it be more beneficial not to bulk
load when the datasize gets large
so that secondary database is built
incrementally?It's up to you whether you want to pay the price during an initial load or incrementally.
d. Do you think it will help to partition the
e original database into smaller databases
using some criteria, and thus build
smaller trees.          Why? You can use deferred write or non-transactional access to load any size database.
The only weak point in this is if we have to bulk
bulk load in one partition
at some time increasing its size we may
face the same problem againFace what problem?
--mark

Is it worth creating secondary index on BKPF table ?

Hello,
One of my clients is using ECC version 5.0. I have a requirement wherein I need to fetch the data from BKPF table based on AWKEY, BUKRS and GJAHR. There is no standard secondary index available.
I have decided to create a secondary index on these fields in the following order:
1) MANDT
2) AWKEY
3) BUKRS
4) GJAHR
I know that creating secondary indexes does improve performance during data retrieval. But when I checked the total number of entries in BKPF table in production system, there are more than 20 lac 2 million records.
I am worried that creation of secondary index will create another table of such a large size in production that has data sorted on the above fields. Also, the RAM of production system is 6 GB.
Please suggest if creation of secondary index is a good measure OR should I recommend the client to increase the system RAM?
Regards,
Danish.
Edited by: Thomas Zloch on Oct 3, 2011 3:01 PM

Hi,
Secondary Index on BKPF-AWKEY has been successfully created in production. The report which used to timeout in foreground as well as in background is now executing in less than 10 seconds !!
Client is very much satisfied with this. But, there is one problem that we are facing now is that when the user is changing an existing billing document via VF02, on SAVE, system takes a very long time to save the changes done.
We monitored the processes via SM50 and found that there was a sequential read on BKPF table.
Before transporting the index in production, system approximately took not more than 5 seconds to save the Billing Document. But now system takes more than 20 minutes just to save the billing document via VF02.
I really don't know what has gone wrong. I can't figure out if I have missed any step while creating the index.
I did the following,
1) Created a Secondary index on BKPF, saved it in the transport request and activated it. Since the index was not existing in database ORACLE, I activated and adjusted the table via SE14. Now, index exists on database as well. Working perfectly in development.
2) Imported the transport request to Production. Checked in SE11. Index was existing and active. Also, index existed in database ORACLE.
Have I missed anything ? Is it required to activate and adjust the database via SE14 in production too ?
Regards,
Danish.

Transport of secondary index on /BIC/P table

Hi All,
I have created a secondary index on '/BIC/P table and it is not allowing me to assign a transport object as the table itself is temporary and it gets created automatically in the target system when we activate the info-object.
Is there any way to transport the secondary index directly on the /BIC/P table ?
Its urgent.
Thanks
Soumya

Soumya,
Sorry for not being clear enough: you can change the package of this index and transport it but since the P table could be regenerated automatically by the BW application when you change your IObj you may now get into troubles when importing a change.
Indeed having now a local $TMP table with a non-local object underneath may not please your target system and even not your DEV system...
One can always bypass SAP BW application; for instance creating indexes directly in the database; but this is at its own risk!
hoping this will explain a bit further your issue
Olivier.

Use secondary index in internal tables.

what are the uses of secondary index in internal table?

http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eb47446011d189700000e8322d00/content.htm
Creating Secondary Indexes
Proceed as follows to create a secondary index on a table:
In the field maintenance screen for the table, choose Goto --> Indexes.
1. If you went to the field maintenance screen of the table in display mode, only correct the index (and not the table).
If indexes already exist on the table, a list of these indexes is displayed. Choose Create. A dialog box appears in which you must enter the three-place index identifier. If there are no indexes, go directly to the dialog box.
2. Enter the index identifier and choose Continue.
You will go to the maintenance screen for indexes.
3. Enter an explanatory short text in the field Short text.
Choose TabFields.
4. A list of all the fields of the table is displayed.
5. Select the fields which you want to copy to the index.
6. Choose Copy.
The selected fields are copied to the index.
7. If the values in the index fields already uniquely identify each record of the table, select Unique index.
A unique index is automatically created on the database during activation because a unique index also has a functional meaning (prevents double entries of the index fields).
8. If it is not a unique index, leave Non-unique index selected. In this case you can use the corresponding radio buttons to define whether the index should be created automatically on the database for all database systems, for selected database systems or for no database system.
9. If you chose For selected database systems, you must specify these systems.
You have two possibilities here:
List of inclusions: The index is only created automatically during activation for the database systems specified in the list. The index is not created on the database for the other database systems.
List of exclusions: The index is not created automatically on the database during activation for the specified database systems. The index is automatically created on the database for the other database systems.
Click on the arrow symbol behind the radio buttons. A dialog box appears in which you can define up to 4 database systems. Use the corresponding radio buttons to decide whether this list should be treated as a list of inclusions or exclusions.
10. Activate the index with Index ® Activate. The activation log tells you about the flow of the activation. Call it with Utilities ® Act.log. If an error occurred when activating the secondary index, you will automatically go to this log.
The secondary index is automatically created on the database during activation if the corresponding table has already been created there and index creation was not excluded for the database system.
Reward points if useful.

Secondary Index on ODS Change Table

Hi All,
We have a process that does a lookup to the change table /bic/XXXX40 in the update rules while loading the ODS. We are having performance problems that can be resolved by putting a secondary index on the change table. We are able to create the index in the Dev env using SE11, but we can't put it in a package other than $TMP. Putting a secondary index on the ODS in the normal way didn't put the index on the change table so that doesn't help us.
Any ideas on how we can get our new index into a package that we can transport?
Thanks in advance!

Just echoing Jorge's post - you'll need to open Prod and create it there, same is if you were creating secondary indices on master data tables or dimension tables, since the wkbench doesn't support creating indices on them either.
PS.
Put yourself on the SDN world map (http://sdn.idizaai.be/sdn_world/sdn_world.html) and earn 25 points.
Spread the wor(l)d!

Regarding Secondary Index in a Table

hi
if i create a secondary index in a table is it obligatory or optional to have first field as MANDT (Client field) if the table is client dependent & how many secondary indexes(MAXIMUM) can be created for a table.
Regards

Hi,
Check the below Link
How to transport a secondary index on P master data table?
Hope this helps you.
Regards,
Anki Reddy

Need help for SQL SELECT query to fetch XML records from Oracle tables having CLOB field

Hello,
I have a scenario wherein i need to fetch records from several oracle tables having CLOB fields(which is holding XML) and then merge them logically to form a hierarchy XML. All these tables are related with PK-FK relationship. This XML hierarchy is having 'OP' as top-most root node and ‘DE’ as it’s bottom-most node with One-To-Many relationship. Hence, Each OP can have multiple GM, Each GM can have multiple DM and so on.
Table structures are mentioned below:
OP:
Name                             Null                    Type
OP_NBR                    NOT NULL      NUMBER(4)    (Primary Key)
OP_DESC                                        VARCHAR2(50)
OP_PAYLOD_XML                           CLOB
GM:
Name                          Null                   Type
GM_NBR                  NOT NULL       NUMBER(4)    (Primary Key)
GM_DESC                                       VARCHAR2(40)
OP_NBR               NOT NULL          NUMBER(4)    (Foreign Key)
GM_PAYLOD_XML                          CLOB
DM:
Name                          Null                    Type
DM_NBR                  NOT NULL         NUMBER(4)    (Primary Key)
DM_DESC                                         VARCHAR2(40)
GM_NBR                  NOT NULL         NUMBER(4)    (Foreign Key)
DM_PAYLOD_XML                            CLOB
DE:
Name                          Null                    Type
DE_NBR                     NOT NULL           NUMBER(4)    (Primary Key)
DE_DESC                   NOT NULL           VARCHAR2(40)
DM_NBR                    NOT NULL           NUMBER(4)    (Foreign Key)
DE_PAYLOD_XML                                CLOB
+++++++++++++++++++++++++++++++++++++++++++++++++++++
SELECT
j.op_nbr||'||'||j.op_desc||'||'||j.op_paylod_xml AS op_paylod_xml,
i.gm_nbr||'||'||i.gm_desc||'||'||i.gm_paylod_xml AS gm_paylod_xml,
h.dm_nbr||'||'||h.dm_desc||'||'||h.dm_paylod_xml AS dm_paylod_xml,
g.de_nbr||'||'||g.de_desc||'||'||g.de_paylod_xml AS de_paylod_xml,
FROM
DE g, DM h, GM i, OP j
WHERE
h.dm_nbr = g.dm_nbr(+) and
i.gm_nbr = h.gm_nbr(+) and
j.op_nbr = i.op_nbr(+)
+++++++++++++++++++++++++++++++++++++++++++++++++++++
I am using above SQL select statement for fetching the XML records and this gives me all related xmls for each entity in a single record(OP, GM, DM. DE). Output of this SQL query is as below:
Current O/P:
<resultSet>
     <Record1>
          <OP_PAYLOD_XML1>
          <GM_PAYLOD_XML1>
          <DM_PAYLOD_XML1>
          <DE_PAYLOD_XML1>
     </Record1>
     <Record2>
          <OP_PAYLOD_XML2>
          <GM_PAYLOD_XML2>
          <DM_PAYLOD_XML2>
          <DE_PAYLOD_XML2>
     </Record2>
     <RecordN>
          <OP_PAYLOD_XMLN>
          <GM_PAYLOD_XMLN>
          <DM_PAYLOD_XMLN>
          <DE_PAYLOD_XMLN>
     </RecordN>
</resultSet>
Now i want to change my SQL query so that i get following output structure:
<resultSet>
     <Record>
          <OP_PAYLOD_XML1>
          <GM_PAYLOD_XML1>
          <GM_PAYLOD_XML2> .......
          <GM_PAYLOD_XMLN>
          <DM_PAYLOD_XML1>
          <DM_PAYLOD_XML2> .......
          <DM_PAYLOD_XMLN>
          <DE_PAYLOD_XML1>
          <DE_PAYLOD_XML2> .......
          <DE_PAYLOD_XMLN>
     </Record>
     <Record>
          <OP_PAYLOD_XML2>
          <GM_PAYLOD_XML1'>
          <GM_PAYLOD_XML2'> .......
          <GM_PAYLOD_XMLN'>
          <DM_PAYLOD_XML1'>
          <DM_PAYLOD_XML2'> .......
          <DM_PAYLOD_XMLN'>
          <DE_PAYLOD_XML1'>
          <DE_PAYLOD_XML2'> .......
          <DE_PAYLOD_XMLN'>
     </Record>
<resultSet>
Appreciate your help in this regard!

Hi,
A few questions :
How's your first query supposed to give you an XML output like you show ?
Is there something you're not telling us?
What's the content of, for example, <OP_PAYLOD_XML1> ?
I don't think it's a good idea to embed the node level in the tag name, it would make much sense to expose that as an attribute.
What's the db version BTW?

Creation of secondary index on RSPCPROCESSLOG table

Hello guys,
We have detected severe performance issues while executing the transaction ST03n in our BW 3.5 System.
Looking in the OSS notes we found the note "SAP Note 841324 - ST03N: poor performance for process chain profile" where it recommends the creation of a secondary index in the table RSPCPROCESSLOG with the following features:
Create another secondary index on the RSPCPROCESSLOG table with the
following fields:
- INSTANCE
- TYPE
Can you please let us know what is the step by step to proceed with the creation of this secondary index?
Thanks for your help.
Kind regards

Please ask questions about Oracle Text (formerly interMedia text) in the Oracle Text forum. You will get a quicker, more expert answer there.

Secondary Index on Table having 0 record?

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