We have a requirement from the customer to start using data and index compression in our 11g database.. Is this something available in Oracle 10g,11g without any additional costs? We are not sure if this will work with our application so we will have to test it in-house, is it possible to compress the existing table data/index to test it out?
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1)i have 2 SWP TABLES. while dropping a column, i am getting error -
ORA-39726: unsupported add/drop column operation on compressed tables.
2) when i checked compression status, those were not compressed. But as per our code standard, SWP tables should not be in compress mode.
OWNER TABLE_NAME COMPRESS COMPRESS_FOR
------------------------------ ------------------------------ -------- ------------
NOVAR PAYMENT_SWP DISABLED
OWNER TABLE_NAME COMPRESS COMPRESS_FOR
------------------------------ ------------------------------ -------- ------------
NOVAR PREPAYMENT_SWP DISABLED
3) as a workaround, i compressed these 2 SWP tables with OLTP option, and then i was able to drop the column from these 2 SWP tables.
4) Below statement is correct or not ?
IF A TABLE USING BLOCK LEVEL COMPRESSION, THEN this error will come - ORA-39726: unsupported add/drop column operation on compressed tables.
if above statement is correct, then how to find out whether table data is using block level compression ?
5) we have DBMS_COMPRESSION.GET_COMPRESSION_TYPE. using this i just tried to find out, but i am getting "1" as output. I am not getting the exact meaning of it.
confirm what is the conclusion on this ?
SQL> declare
rid rowid;
n number;
begin
select max(rowid) into rid from NOVAR.PAYMENT_SWP;
n := dbms_compression.get_compression_type('NOVAR','PAYMENT_SWP',rid);
dbms_output.put_line(n);
end;
/
2 3 4 5 6 7 8 9 1
PL/SQL procedure successfully completed.
SQL>
SQL> SET SERVEROUTPUT ON
SQL> /
1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.PAYMENT_SWP;
MAX(ROWID)
------------------
AAsz4fAHSAAAD3IABs
(ii) 2nd table
SQL> set serveroutput on
SQL> declare
rid rowid;
n number;
begin
select max(rowid) into rid from NOVAR.PREPAYMENT_SWP;
n := dbms_compression.get_compression_type('NOVAR','PREPAYMENT_SWP',rid);
dbms_output.put_line(n);
end;
2 3 4 5 6 7 8 9
10 /
1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.INVOICELINE_SWP;
MAX(ROWID)
------------------
AAsz4ZAEkAAAp8XAAA
I start my database and suddenly got this error:
ORA-00371: not enough shared pool memory, at least 72102521958 bytes
How to fix? I use startup command only and shutdown when shutdown the database.
Our database size is 100GB and i removed few records from a table and rebuild the index.The size of Index reduced considerably after Index rebuild but now i see our database size increased to 115GB.I know online rebuild creates second index which is also removed after the build is finished then why the increase in database size?Is there a way so it shows up more space ?
select sum(bytes) from dba_segments where owner='abc' and segment_name='abc_index_1';
8GB
ALTER INDEX abc_index_1 REBUILD ONLINE ;
select sum(bytes) from dba_segments where owner='abc' and segment_name='abc_index_1';
2GB
How to verify if rebuild an index is required in database.
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View 9 Replies View RelatedI had created a Primary key and wanted to compress as per my senior instructions.Below are my results the size increased after compression.
select compression from dba_indexes where index_name = 'TEST_IDX';
Compression
----------
DISABLED
select sum(blocks) no_of_blocks, (sum(blocks)*8192)/(1024*1024)size_MB
[code]....
We ran a compression on the primary key index TEST_IDX
ALTER INDEX SCOTT.TEST_IDX REBUILD INITRANS 15 TABLESPACE DATA_01 COMPRESS;
ANALYZE INDEX SCOTT.TEST_IDX VALIDATE STRUCTURE;
Now when i ran the below select statement:
select compression from dba_indexes where index_name = 'TEST_IDX';
Compression
----------
ENABLED
select sum(blocks) no_of_blocks, (sum(blocks)*8192)/(1024*1024)size_MB
[code]....
As you can see after compression the blocks and size has been increased, but i ran for many tables and other indexes, we observed the blocks and size was reduced by 50-70%, i am not sure why this happened to the index compression.
I have a global index and I want to convert it to local index.Is there a way to recreate local index with out dropping the global index.
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View 3 Replies View RelatedI have setup a RAC machine of two nodes on Oracle 10GR2(with 10.2.0.4 Patchset). All setup went well. I am able to connect one node from sqlplus but the other node is connected to idle instance. I tried to startup the database with mount and nomount option but it fails. Following is the error :
SQL> startup nomount;
ORA-01078: failure in processing system parameters
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SQL>
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DATA/
INDEX/
ASMCMD> cd DATA
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I have oracle8i database on windows 2008 but not a domin server now i have domin server and i want to join this server on domin network i try to join domin it fine but my oracle8i service did not start what to do ?
old hostname=bagmati
afterchange hostname=bagmati.alkatel.org.np
OS: AIX 6.1 64bit
DB: Oracle 10gR2 (10.2.0.5.0)
What we did is..
1. Install patch 6613550 (./rootpre.sh)
2. Install 10.2.0.1 for AIX 64-bit
3. Install 10.2.0.5 Patch Set
4. Create Database
5. Created/Setup LISTENER and TNSNAMES (test connection successful)
After installation of database, everything went well until we tried to restart the server, what happened is that we cannot start the listener, the error was:
TNS-12555: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00525: Insufficient privilege for operation
IBM/AIX RISC System/6000 Error: 1: Not owner
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BTW, our /tmp has enough space so we did not perform the following steps from the installation guidelines:
$TEMP=/directory
$TMPDIR=/directory
$export TEMP TMPDIR
I was thinking if that we must make a temp directory for oracle and set it in the profile, or change the owner to root again and perform this:
$chown -R oracle:oinstall /tmp
$chmod -R 777 /tmp
I need to add some kind of tracing in oracle 11g on linux when oracle starts and stops - as at times oracle takes a long time to start.
View 9 Replies View RelatedI am unable to start ACTIVE DATAGUARD in 11g.
SQL> startup
ORACLE instance started.
Total System Global Area 522092544 bytes
Fixed Size 2090224 bytes
[code]...
Database altered.
SQL> select count(*) from scott.test;
select count(*) from scott.test
*
ERROR at line 1:
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We have an Oracle Server database of Size 50 GB having 10 GB Data. And Planning to have a new Database Server of 200GB . So my question is after moving all the 10 GB data to 200 GB Database Server, will the performance of the system come down? Will it reduce the speed?
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We have the space in tablespaces and also in the file systesm.
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View 5 Replies View RelatedI'm new into Oracle, consider the below scenario and respond it accordingly.
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Can I do it like this
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Which is the best possible way of configuring the Physical file structure in case of Data Warehouseing application?
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If i know a rowid of a row,how to get the block_number of index?
SQL> select rowid from hxl.tb_test where id=1;
ROWID
------------------
AAAMo/AAFAAAAAOAAA
we have 25 GB free space in Index tablespace, to avoid space issue i have added 10GB of space. Next shift DBA, rebuild INDEX of the from INDEX tablespace. Now i can check, only 27GB free space in INDEX tablespace...
Rebuilding of INDEX takes extra space.. ?
How to compress a index?
SQL> Create Table tb_compress_test
2 As
3 Select * From dba_objects;
Table created.
SQL> Create Index idx_object_id On tb_compress_test(object_id);
Index created.
SQL> Alter Index idx_object_id Move Compress;
Alter Index idx_object_id Move Compress
*
ERROR at line 1:
ORA-02243: invalid ALTER INDEX or ALTER MATERIALIZED VIEW option
What exactly mean density of the index in db meanings ? I mean when you configure rebuilt of the index and how do you determine the value of density? for e.g when I have density 40 what does it mean ? next question : how shall I determine which tables are included in index ?
View 5 Replies View Relatedi am continuously inserting data to oracle database after some time like 2 hours oracle disconnects,it creates erros like
ERROR:
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Process ID: 0
Session ID: 0 Serial number: 0
after restarting the database with shutdown immediate ans startup if i start inserting records it will show erros like
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same problem is happenging with small datafiles also,
operating system: windows server 2008 R2 standard
oracle server : 11g
oracle client : 64 bit
On a SAP system, am trying to drop six indexes, largest is 300MB and smallest is 50MB.
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I am working on Index issue and need to validate the structure of the index. Does validation lock the Index ?
Do we need downtime or we can do it in normal working hours.
alter index index_name validate structure;
