Re: BitMap Join Indexes -- extracting the DDL

From: <jtesta_at_dmc-it.com>
Date: Thu, 25 Mar 2004 12:07:55 -0500 (EST)
Message-ID: <57116.155.188.255.4.1080234475.squirrel@www.dmc-it.com>

how about this:

export data no rows(assume filename expdat.dmp)
strings expdat.dmp > expdat.str
grep -in "create bitmap index" expdat.str > bitmap.str
vi the bitmap.str file to get what you need.

couple of caveats:

strings is stupid(ie: line limit of 2k) on darn near every unix except linux.
you might have to sift thru alot of bitmap index definitions.

hth, joe

>
>
> A consultant at my site has begun using BitMap Join Indexes [9.2.0.4 on
> Solaris8]
> We have no complaints with that -- in fact we do get good performance.
>
> However, we find that we are unable to get the BMJI definitions out,
> either by querying USER_INDEXES or USER_IND_COLUMNS or using
> DBMS_METADATA.GET_DDL
>
> e.g.
> for the index definition
> create bitmap index facts_cycle_count_bm on t_chart_facts
> (t_time_dim.cycle_count)
> from t_chart_facts,t_time_dim where t_chart_facts.time_id =
> t_time_dim.time_id;
>
> For Table T_CHART_FACTS, I see the Index in DBA_INDEXES but not in
> DBA_IND_COLUMNS.
> for Table T_TIME_DIM, I do not see the Index in DBA_INDEXES but see it
> in DBA_IND_COLUMNS.
> Furthermore, running select
> dbms_metadata.get_ddl('INDEX','FACTS_CYCLE_COUNT_BM','DWH') FROM DUAL, I
> do not get the column names --- I get only
> CREATE BITMAP INDEX "DWH"."FACTS_CYCLE_COUNT_BM" ON
> "DWH"."T_CHART_FACTS" ( PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE
> STATISTICS
> STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
> PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
> TABLESPACE "DWH"
>
>
> The Support Analyst has identified potential Bugs# 2944274 and 2977027.
> I cannot see 2944274 and 2977027 does not seem to be relevant [from
> what I can see
> of the publicly visible portions of the Bug Text] --> DBMS_METADATA
> generates INCORRECT DDL ORDER FOR LOCAL INDEXES
>
>
> Has anyone use BMJIs and been able to extract the DDL out ?
>
>
> Hemant K Chitale
> Oracle 9i Database Administrator Certified Professional
> http://hkchital.tripod.com {last updated 21-March-04}
> "If you wish to leave your footprints on the sand, do not drag your
> feet"
>
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Received on Thu Mar 25 2004 - 11:21:18 CST