V$sort_usage

anyone know how to select the user column from this view without
executing the user function and getting back who your logged in
as?? Thank you.

LOL. Looks like the problem is with the view itself. Try this
instead:
select username, v$sort_usage.*
from v$sort_usage, v$session
where v$session.sql_address = v$sort_usage.sqladdr

Similar Messages

V_$SORT_USAGE equivalent structure or table in abap

Hi Experts,
I want to access the contents of this oracle data dictionary view V_$SORT_USAGE for a particular tablespace through an abap program, so is there any structure used by a fm or some database tables or view which is equivalent to this view V_$SORT_USAGE.
Through db02 I was able to get the structure similar to DBA_TABLESPACES of oracle database, in similar way i want information for this view in bw database
Does anybody know about this information,
It will be of great use to me.
Thanks,
Hema.

Hi,
While searching for the view V_$SORT_USAGE,I got the following information.Is it possible to call the view from a ABAP report using Native SQL?[EXEC SQL...ENDEXEC]
For every user using temporary space, there is an entry in SYS.V$_LOCK with type 'TS'.
All temporary segments are named 'ffff.bbbb' where 'ffff' is the file it is in and 'bbbb' is first block of the segment.
If your temporary tablespace is set to TEMPORARY, all sorts are done in one large temporary segment. For usage stats, see SYS.V_$SORT_SEGMENT
From Oracle 8.0, one can just query SYS.v$sort_usage. Look at these examples:
     select s.username, u."USER", u.tablespace, u.contents, u.extents, u.blocks
        from   sys.v_$session s, sys.v_$sort_usage u
        where s.saddr = u.session_addr
        select s.osuser, s.process, s.username, s.serial#,
               sum(u.blocks)*vp.value/1024 sort_size
        from   sys.v_$session s, sys.v_$sort_usage u, sys.v_$parameter vp
        where s.saddr = u.session_addr
          and vp.name = 'db_block_size'
          and s.osuser like '&1'
        group by s.osuser, s.process, s.username, s.serial#, vp.value

Sql_id in gv$sort_usage vs gv$session

I've caught a strange(?) situation here.
select sql_id from gv$sort_usage where session_addr='000000046A1932F0'; -- gives me 5bqt08ckavskx
where as
select sql_id from gv$session where saddr='000000046A1932F0'; -- gives me 1rztpy7a92vpn
Because of this, I am not able to find the correct query which is consuming lots of temp segments. Well, actually, I am catching up those queries when things are apparent but I am now caught in a situation where two queries are somewhat similar and getting me confused. Why gv$sort_usage and gv$session are giving me different queries and which query is the one that is actually taking the huge temp segments?
Any help is appreciated.
Thanks
gtcol

You might find useful information in DBA_TEMP_FILES :
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:374218170986#76977305391283 (warning: long thread ;) ,but many alternatives)
http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/tspaces.htm#sthref1323
Also dbms_xplan can be used to show you the estimated temp space needed by a query, using column temp_space from the plan_table:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/ex_plan.htm#g30946

V$SORT_USAGEとV$SQLとV$SESSIONの連結SQLで.重複したデータを出力させないようにする方法

下記SQL文でV$SORT_USAGEとV$SQLとV$SESSIONをJOINした結果を表示させようと思いますが、
SESSION_ADDRが重複して出力されてしまいます。
重複を排除したSQL文を出力させる方法をわかる方いましたら、教えてください。
※本来は、SELECTするカラムはもっと多いですが、ここでは省力しています。
SELECT
     SORT.SESSION_ADDR
FROM
     V$SESSION SES,
     V$SORT_USAGE SORT,
     V$SQL SQL
WHERE
     SES.SADDR=SORT.SESSION_ADDR AND
     SES.SQL_ID=SQL.SQL_ID AND
     SES.SQL_CHILD_NUMBER = SQL.CHILD_NUMBER AND
     SES.SQL_ADDRESS=SQL.ADDRESS AND
     SORT.SQLADDR=SQL.ADDRESS AND
     SORT.SQLHASH=SQL.HASH_VALUE
ORDER BY
     BLOCKS;
SESSION_ADDR
00000003FF79A788
00000003FF79A788
00000003FF79BCF0
00000003FC7C9258
00000003FF79BCF0
00000003FC7C9258
6 rows selected.
【備考】
・表示するカラムにV$SORT_USAGE.SQL_FULLTEXT（CLOB)も含めたい為、distinct句で
重複を排除する事ができません。
・DBはOracle10gです。

すみません。上記は自己解決しました。
※SEGMENT_TYPE別にSQL文が出力されるのですね

What is the unit of EXTENT_SIZE in v$sort_usage , is it no. of blocks or bytes ?

Hi All
What is the unit of EXTENT_SIZE in v$sort_usage , is it no. of blocks or bytes ? for 11.2.0.4
Thanks

their is no such column in v$sort_usage
However their is one extent column and it means "Extents allocated to the sort"
VIEW v$sort_usage
Name                                      Null?    Type
USERNAME                                           VARCHAR2(30)
USER                                               VARCHAR2(30)
SESSION_ADDR                                       RAW(8)
SESSION_NUM                                        NUMBER
SQLADDR                                            RAW(8)
SQLHASH                                            NUMBER
SQL_ID                                             VARCHAR2(13)
TABLESPACE                                         VARCHAR2(31)
CONTENTS                                           VARCHAR2(9)
SEGTYPE                                            VARCHAR2(9)
SEGFILE#                                           NUMBER
SEGBLK#                                            NUMBER
EXTENTS                                            NUMBER
BLOCKS                                             NUMBER
SEGRFNO#

ORA-00600: internal error code, arguments: [17183], [0x033134908], [], [],

Hi Exports,
I am getting the ORA-00600: internal error code, arguments: [17183], [0x033134908], [], [], [], [], [], []
The temporary tablespace of the database is full and i am trying to do the following steps.
SQL> select * from dba_temp_files;
FILE_NAME FILE_ID TABLESPACE_NAME BYTES Blocks Etat RELATIVE_FNO AUT MAXBYTES MAXBLOCKS INCREMENT_BY
USER_BYTES USER_BLOCKS
G:\ORADATA\TEMP01.DBF 1 TEMP 3.4359E+10 4,194,176 AVAILA 1 YES 3.4360E+10 4194302 80
3.4358E+10 4194048
J:\ORADATA\TIVOLIORTEMPTS.DBF 5 TIVOLIORTEMPTS 104857600 12,800 AVAILA 1 NO 0 0 0
103809024 12672
J:\ORADATA\TEMP_ORISSA_MASTER.TMP 2 TEMP_ORISSA_MASTER 10485760 1,280 AVAILA 1 YES 52428800 6400 128
9437184 1152
J:\ORADATA\TEMP_ORISSA_BENCHMARK.TMP 3 TEMP_ORISSA_BENCHMARK 680525824 83,072 AVAILA 1 YES 1073741824 131072 2
679477248 82944
J:\ORADATA\TEMP_ORISSA_TRANSACTION 4 TEMP_ORISSA_TRANSACTION 104857600 12,800 AVAILA 1 YES 1073741824 131072 2
103809024 12672
5 rows selected.
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP 3.4359E+10 0
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
5 rows selected.
SQL> CREATE TEMPORARY TABLESPACE MYTEMPFILE
2 TEMPFILE 'G:\ORADATA\TEMP001.dbf'
3 SIZE 1000M AUTOEXTEND ON NEXT 10M MAXSIZE 2000M;
Tablespace created.
SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE MYTEMPFILE;
Database altered.
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP 3.4359E+10 0
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
MYTEMPFILE 1048576 1047527424
6 rows selected.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES;
ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES
ERROR at line 1:
ORA-25152: TEMPFILE cannot be dropped at this time
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
MYTEMPFILE 11534336 1037041664
5 rows selected.
SQL> select STATUS,ENABLED,STATUS,BYTES/1024/1024 from v$tempfile;
Etat ENABLED Etat BYTES/1024/1024
OFFLIN READ WRITE OFFLIN 0
ONLINE READ WRITE ONLINE 100
ONLINE READ WRITE ONLINE 10
ONLINE READ WRITE ONLINE 649
ONLINE READ WRITE ONLINE 100
ONLINE READ WRITE ONLINE 1000
6 rows selected.
SQL> desc v$tempfile;
Name Null? Type
FILE# NUMBER
CREATION_CHANGE# NUMBER
CREATION_TIME DATE
TS# NUMBER
RFILE# NUMBER
STATUS VARCHAR2(7)
ENABLED VARCHAR2(10)
BYTES NUMBER
BLOCKS NUMBER
CREATE_BYTES NUMBER
BLOCK_SIZE NUMBER
NAME VARCHAR2(513)
SQL> select file#,STATUS,ENABLED,STATUS,BYTES/1024/1024 from v$tempfile;
FILE# Etat ENABLED Etat BYTES/1024/1024
1 OFFLIN READ WRITE OFFLIN 0
5 ONLINE READ WRITE ONLINE 100
2 ONLINE READ WRITE ONLINE 10
3 ONLINE READ WRITE ONLINE 649
4 ONLINE READ WRITE ONLINE 100
6 ONLINE READ WRITE ONLINE 1000
6 rows selected.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES;
ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES
ERROR at line 1:
ORA-25152: TEMPFILE cannot be dropped at this time
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' offline;
Database altered.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES;
ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES
ERROR at line 1:
ORA-25152: TEMPFILE cannot be dropped at this time
SQL> select * from dba_temp_files;
FILE_NAME FILE_ID TABLESPACE_NAME BYTES Blocks Etat RELATIVE_FNO AUT MAXBYTES MAXBLOCKS INCREMENT_BY
USER_BYTES USER_BLOCKS
G:\ORADATA\TEMP01.DBF 1 TEMP AVAILA
J:\ORADATA\TIVOLIORTEMPTS.DBF 5 TIVOLIORTEMPTS 104857600 12,800 AVAILA 1 NO 0 0 0
103809024 12672
J:\ORADATA\TEMP_ORISSA_MASTER.TMP 2 TEMP_ORISSA_MASTER 10485760 1,280 AVAILA 1 YES 52428800 6400 128
9437184 1152
J:\ORADATA\TEMP_ORISSA_BENCHMARK.TMP 3 TEMP_ORISSA_BENCHMARK 680525824 83,072 AVAILA 1 YES 1073741824 131072 2
679477248 82944
J:\ORADATA\TEMP_ORISSA_TRANSACTION 4 TEMP_ORISSA_TRANSACTION 104857600 12,800 AVAILA 1 YES 1073741824 131072 2
103809024 12672
G:\ORADATA\TEMP001.DBF 6 MYTEMPFILE 1048576000 128,000 AVAILA 1 YES 2097152000 256000 1280
1047527424 127872
6 rows selected.
SQL> select file#,STATUS,ENABLED,STATUS,BYTES/1024/1024 from v$tempfile;
FILE# Etat ENABLED Etat BYTES/1024/1024
1 OFFLIN READ WRITE OFFLIN 0
5 ONLINE READ WRITE ONLINE 100
2 ONLINE READ WRITE ONLINE 10
3 ONLINE READ WRITE ONLINE 649
4 ONLINE READ WRITE ONLINE 100
6 ONLINE READ WRITE ONLINE 1000
6 rows selected.
SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE temp;
Database altered.
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
MYTEMPFILE 28311552 1020264448
5 rows selected.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' online;
Database altered.
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP 3.4359E+10 0
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
MYTEMPFILE 28311552 1020264448
6 rows selected.
SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE MYTEMPFILE;
Database altered.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES;
ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES
ERROR at line 1:
ORA-25152: TEMPFILE cannot be dropped at this time
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' offline;
Database altered.
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES;
ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' DROP INCLUDING DATAFILES
ERROR at line 1:
ORA-25152: TEMPFILE cannot be dropped at this time
SQL> ALTER DATABASE TEMPFILE 'G:\ORADATA\TEMP01.DBF' online;
Database altered.
SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE temp;
Database altered.
SQL> select TABLESPACE_NAME, BYTES_USED, BYTES_FREE from V$TEMP_SPACE_HEADER;
TABLESPACE_NAME BYTES_USED BYTES_FREE
TEMP 3.4359E+10 0
TEMP_ORISSA_MASTER 4194304 6291456
TEMP_ORISSA_BENCHMARK 680525824 0
TEMP_ORISSA_TRANSACTION 37748736 67108864
TIVOLIORTEMPTS 1048576 103809024
MYTEMPFILE 32505856 1016070144
6 rows selected.
SQL> exit
I am not able to drop the Temp file as it is used by some users.
When i checked my Alert Log then i am getting the ora-600 error....
When i check metalink for this argument i found that its a bug in 91 &10gR2
Please suggest some solution of this problem.
Is it a serious issue of database.

Robert Geier wrote:
If you kill the sessions using the tempfile, or restart the database you may be able to drop it. Or you could try to shrink the tempfile instead of drop.
Not sure why you are doing that though ? If the temp tablespace is full, check what is using the space, or add another tempfile to the tablespace.No I am not killing the sessions... But i just checked using following query that some users are using the temp Tablespace at that time. But i did not kill any session.
select 'alter system kill session '''||a.sid||','||a.serial#||''' immediate;'
from
v$session a,
v$sort_usage b,
v$process c,
v$parameter d
where
d.name = 'db_block_size'
and
a.saddr = b.session_addr
and
a.paddr = c.addr
and
b.tablespace='TEMP'
and
a.status='ACTIVE'
order by
b.tablespace,
b.segfile#,
b.segblk#,
b.blocks;

Various Data DIctionary VIews

After posting something here a few days back about the myriad views needing to be digested for the Fund.I Exam, I have just gleaned this lot from the Couchman book. No doubt some of the pros out there may well correct me, but this is simple what I have collected from the book, in the last 3 hours. Cheers.
Dictionary Views
Data Dictionary
Which users are in the database password file:
V$PWFILE_USERS
Where values set in the init.ora file can be viewed – all parameters:
V$PARAMETER
Script used to create the objects that comprise the data dictionary:
catalog.sql
To grant a special role to users so they can look at DBA views:
SELECT_CATALOG_ROLE
Information about all database objects in the database:
DBA_OBJECTS
Information about all tables in the database:
DBA_TABLES
Information about all indexes in the database:
DBA_INDEXES
Information about all views (including dictionary views) in the database:
DBA_VIEWS
Information about all sequences in the database:
DBA_SEQUENCES
Information about all users in the database:
DBA_USERS
Information about all constraints in the database:
DBA_CONSTRAINTS
Information about all table columns that have constraints on them:
DBA_CONS_COLUMNS
Information about all columns that have indexes on them in the database:
DBA_IND_COLUMNS
Information about all columns in all the tables in the database:
DBA_TAB_COLUMNS
Information about all the roles in the database:
DBA_ROLES
Information about all object privileges in the database:
DBA_TAB_PRIVS
Information about all system privileges granted to all users in the database:
DBA_SYS_PRIVS
Displays all PL/SQL source code in the database:
DBA_SOURCE
Information about all triggers in the database:
DBA_TRIGGERS
Information about object privileges granted to roles
ROLE_TAB_PRIVS
Information about system privileges granted to roles
ROLE_SYS_PRIVS
Information about roles granted to roles
ROLE_ROLE_PRIVS
Information about all tablespaces in the database:
DBA_TABLESPACES
Information about all profiles in the database:
DBA_PROFILES
For all parameters?
V$PARAMETER
General information about the database mounted to your instance:
V$DATABASE
Most information about the performance of the database is kept here:
V$SYSSTAT
Most information about the performance for individual user sessions is stored here:
V$SESSION , V$SESSTAT
Information about online redo logs (2)
V$LOG, V$LOGFILE
Information about datafiles
V$DATAFILE
Basic information about control files, and the two columns it has:
V$CONTROLFILE. STATUS / NAME
An object you can query to obtain a listing of all data dictionary objects (4)
CATALOG, CAT, DICTIONARY, DICT.
When the control file was created, Sequence Number, most recent SCN:
V$DATABASE
Information stored in different sections of the control file, Sequence Number:
V$CONTROLFILE_RECORD_SECTION
To see the names and locations of all control files in the db? (2)
V$PARAMETER. V$CONTROLFILE
Tablespace and Datafiles
Temporary Segments:
Name, tablespace location, and owner of temporary segments:
DBA_SEGMENTS
Size of temporary tablespaces, current number of extents allocated to sort segments, and sort segment high-water mark information. Space usage allocation for temporary segments:
V$SORT_SEGMENT
Types of sorts that are happening currently on the database
V$SORT_USAGE
To see the username corresponding with the session:
V$SESSION
Information about every datafile in the database associated with a temporary tablespace:
DBA_TEMP_FILES
Similar to DBA_TEMP_FILES, this performance view gives Information about every datafile in the database associated with a temporary tablespace:
V$TEMPFILE
Storage Structures
A summary view, contains all types of segments and their storage parameters, space utilization settings:
DBA_SEGMENTS
Tablespace quotas assigned to users:
DBA_TS_QUOTAS
Segment name, type, owner, total bytes of extent, name of tablespace storing the extent:
DBA_EXTENTS
The location and amount of free space by tablespace name:
DBA_FREE_SPACE
The location of free space in the tablespace that has been coalesced:
DBA_FREE_SPACE_COALESCED
Information about datafiles for every tablespace
DBA_DATAFILES
Performance view for information for datafiles for every tablespace
V$DATAFILE
To see the total amount of space allocated to a table?
DBA_EXTENTS
Table creation timestamp, information about the object ID:
DBA_OBJECTS
High water mark, all storage settings for a table, and statistics collected as part of the analyze (for row migration) operation on that table
DBA_TABLES
Information about every column in every table:
DBA_TAB_COLUMNS
To determine how many columns are marked unused for later removal?
DBA_UNUSED_COL_TABS
To find the number of deleted index entries ?
INDEX_STATS
To determine the columns on a table that have been indexed:
DBA_ID_COLUMNS
The dynamic view to show whether the index is being used in a meaningful way?
V$OBJECT_USAGE
To see whether a constraint exists on a particular column?
DBA_CONS_COLUMNS
To see the constraints associated with a particular table:
DBA_CONSTRAINTS
To find the username, ID number, (encrypted) password, default and temporary tablespace information, user profile of a user, password expiry date:
DBA_USERS
To all objects, which objects belong to which users, how many objects a user has created?
DBA_OBJECTS
Resource-usage parameters for a particular profile:
DBA_PROFILES
Identifies all resources in the database and their corresponding cost:
RESOURCE_COST
Identifies system resource limits for individual users:
USER_RESOURCE_LIMITS
Shows all system privileges:
DBA_SYS_PRIVS
Show all object privileges:
DBA_TAB_PRIVS
Shows all privileges in this session available to you as the current user:
SESSION_PRIVS
Views for audits currently taking place are created by this script:
cataudit.sql
a list of audit entries generated by the exists option of the audit command:
DBA_AUDIT_EXISTS
A list of audit entries generated for object audits:
DBA_AUDIT_OBJECT
A list of audit entries generated by session connects and disconnects:
DBA_AUDIT_SESSION
A list of audit entries generated by statement options of the audit command:
DBA_AUDIT_STATEMENT
A list of all entries in the AUD$ table collected by the audit command:
DBA_AUDIT_TRAIL
To determine the roles available in the database, the names of all the roles on the database and if a password is required to use each role:
DBA_ROLES
Names of all users and the roles granted to them:
DBA_ROLE_PRIVS
All the roles and the roles that are granted to them:
ROLE_ROLE_PRIVS
Which system privileges have been granted to a role:
DBA_SYS_PRIVS
All the system privileges granted only to roles:
ROLE_SYS_PRIVS
All the object privileges granted only to roles:
ROLE_TAB_PRIVS
All the roles available in the current session:
SESSION_ROLES
Which object privilege has been granted to a role:
DBA_TAB_PRIVS
To display the value of the NLS_CHARACTERSET parameter:
NLS_DATABASE_PARAMETERS
DA

You can also find a lot of stuff by doing:
SELECT *
FROM dictionary;

Issue with to_number

Hello all.
Please explain me the following phenomena, i cant figure this out.
Why is 'to_number' function forced by the optimizer in this query @ the operation number 11 ?
SQL> select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Prod
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for Linux: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
SQL>
SQL>
SQL>
SQL> explain plan for
2 with q as (
3    select v$parameter.value bs_value
4    from v$parameter
5    where name='db_block_size'
6 )
7 select a.username,
8         a.sid, a.serial#,
9         round(((b.blocks*bs_value)/1024/1024),2) size_mb,
10         a.status,
11         b.segfile#,
12         b.segblk#
13 from v$session a,
14       v$sort_usage b,
15       v$process c,
16       q
17 where a.saddr = b.session_addr
18    and a.paddr = c.addr
19    and ((nvl(b.blocks,0)*nvl(bs_value,0))/1024/1024) > 0
20 -- group by b.segfile#, b.segblk#,
21 order by size_mb;
Explained.
SQL>
SQL>
SQL> set linesize 250
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 3927520946
| Id | Operation                    | Name            | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT             |                 |     1 |   668 |     3 (100)| 00:00:01 |
|   1 | SORT ORDER BY               |                 |     1 |   668 |     3 (100)| 00:00:01 |
|   2 |   NESTED LOOPS               |                 |     1 |   668 |     2 (100)| 00:00:01 |
|* 3 |    HASH JOIN                 |                 |     1 |   655 |     2 (100)| 00:00:01 |
|* 4 |     HASH JOIN                |                 |     1 |   625 |     2 (100)| 00:00:01 |
|   5 |      NESTED LOOPS            |                 |     1 |   509 |     1 (100)| 00:00:01 |
PLAN_TABLE_OUTPUT
|* 6 |       HASH JOIN              |                 |     1 |   496 |     1 (100)| 00:00:01 |
|   7 |        NESTED LOOPS          |                 |     1 |   428 |     1 (100)| 00:00:01 |
|* 8 |         HASH JOIN            |                 |     1 |   138 |     1 (100)| 00:00:01 |
|* 9 |          FIXED TABLE FULL    | X$KSUSE         |     1 |    69 |     0   (0)| 00:00:01 |
|* 10 |          FIXED TABLE FULL    | X$KTSSO         |     1 |    69 |     0   (0)| 00:00:01 |
|* 11 |         FIXED TABLE FULL     | X$KSPPCV        |     5 | 1450 |     0   (0)| 00:00:01 |
|* 12 |        FIXED TABLE FULL      | X$KSPPI         |     1 |    68 |     0   (0)| 00:00:01 |
|* 13 |       FIXED TABLE FIXED INDEX| X$KSLED (ind:2) |     1 |    13 |     0   (0)| 00:00:01 |
|* 14 |      FIXED TABLE FULL        | X$KSUSE         |     1 |   116 |     0   (0)| 00:00:01 |
|* 15 |     FIXED TABLE FULL         | X$KSUPR         |     1 |    30 |     0   (0)| 00:00:01 |
|* 16 |    FIXED TABLE FIXED INDEX   | X$KSLED (ind:2) |     1 |    13 |     0   (0)| 00:00:01 |
PLAN_TABLE_OUTPUT
Predicate Information (identified by operation id):
   3 - access("S"."KSUSEPRO"="ADDR")
   4 - access("S"."ADDR"="KTSSOSES")
   6 - access("X"."INDX"="Y"."INDX")
       filter(TRANSLATE("KSPPINM",'_','#') NOT LIKE '#%' OR "KSPPSTDF"='FALSE' OR
              BITAND("KSPPSTVF",5)>0)
   8 - access("KTSSOSES"="S"."ADDR" AND "KTSSOSNO"="S"."KSUSESER")
PLAN_TABLE_OUTPUT
   9 - filter("S"."INST_ID"=USERENV('INSTANCE') AND BITAND("S"."KSSPAFLG",1)<>0 AND
              BITAND("S"."KSUSEFLG",1)<>0)
10 - filter("X$KTSSO"."INST_ID"=USERENV('INSTANCE'))
11 - filter(NVL("KTSSOBLKS",0)*TO_NUMBER(NVL("KSPPSTVL",'0'))/1024/1024>0)
12 - filter("KSPPINM"='db_block_size' AND "X"."INST_ID"=USERENV('INSTANCE') AND
              TRANSLATE("KSPPINM",'_','#') NOT LIKE '##%')
13 - filter("S"."KSUSEOPC"="E"."INDX")
14 - filter("S"."INST_ID"=USERENV('INSTANCE') AND BITAND("S"."KSSPAFLG",1)<>0 AND
              BITAND("S"."KSUSEFLG",1)<>0)
15 - filter("INST_ID"=USERENV('INSTANCE') AND BITAND("KSSPAFLG",1)<>0)
16 - filter("S"."KSUSEOPC"="E"."INDX")
44 rows selected.

Actually I can reproduce, when hardcoding block size the query runs ok, but the other version keeps on ending up in an error:
SQL>   select a.username,
2           a.sid, a.serial#,
3           (b.blocks * 8192)/1024/1024 size_mb,
4           a.status,
5           b.segfile#,
6           b.segblk#
7    from v$session a,
8         v$sort_usage b,
9         v$process c
10    where a.saddr = b.session_addr
11      and a.paddr = c.addr
12      and (b.blocks * 8192)/1024/1024 > 0;
USERNAME                              SID    SERIAL#    SIZE_MB STATUS     SEGFILE#    SEGBLK#
*********                             254       6958          1 INACTIVE        201      33280
*********                             254       6958          1 INACTIVE        201      33664
2 rows selected.
SQL> with q as (
2    select v$parameter.value bs_value
3    from v$parameter
4    where name='db_block_size'
5 )
6 select a.username,
7         a.sid, a.serial#,
8         round(((b.blocks*bs_value)/1024/1024),2) size_mb,
9         a.status,
10         b.segfile#,
11         b.segblk#
12 from v$session a,
13       v$sort_usage b,
14       v$process c,
15       q
16 where a.saddr = b.session_addr
17    and a.paddr = c.addr
18    and ((nvl(b.blocks,0)*nvl(bs_value,0))/1024/1024) > 0;
and ((nvl(b.blocks,0)*nvl(bs_value,0))/1024/1024) > 0
ERROR at line 18:
ORA-01722: invalid number
SQL> select * from v$version
2 /
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
PL/SQL Release 11.1.0.7.0 - Production
CORE    11.1.0.7.0      ProductionNow I've been fiddling with the query, adding to_number, omitting nvl etc. etc., but I keep on getting invalid number,. no matter what...
This is either very weird or I'm missing something very obvious here.. ?:|

Oracle 11g - Memory used for sorting

Hi everyone,
I would like to know how I could analyze memory used for sorting in Oracle 11g. When I run the below query, it returns 1531381.
select value from v$sysstat where name like 'sorts (memory)';But when I check sort_area_size parameter from v$parameter, it returns 65536. Does it mean my database is using more memory for sorting than sort_area_size. Or is the way I interpret v$sysstat view and sort_area_size wrong? What is the best way to monitor the memory usage for sorting? Thanks in advance.
Regards,
K.H
Edited by: K Hein on Apr 5, 2012 8:16 PM

check the valuse of pga_aggregate_target
http://docs.oracle.com/cd/B19306_01/server.102/b14237/initparams157.htm
Note:
Oracle does not recommend using the SORT_AREA_SIZE parameter unless the instance is configured with the shared server option. Oracle recommends that you enable automatic sizing of SQL working areas by setting PGA_AGGREGATE_TARGET instead. SORT_AREA_SIZE is retained for backward compatibility.
What is the best way to monitor the memory usage for sorting? try v$sort_usage
or v$tempseg_usage
col sid_serial for a44
col size for a22
col SID_SERIAL for a22
SELECT b.tablespace,
        ROUND(((b.blocks*p.value)/1024/1024),2)||' MB' "SIZE",
        a.sid||','||a.serial# SID_SERIAL,
        a.username,a.osuser,
        a.program
   FROM sys.v_$session a,
        sys.v_$sort_usage b,
        sys.v_$parameter p
WHERE p.name = 'db_block_size'
    AND a.saddr = b.session_addr
ORDER BY b.blocks;

Can any one validate the below queries related to temp tablespace

For Temporary Tablespace Free and Used Space Information, I am using the following query
SELECT fs.tablespace_name tspace,
sum(fs.bytes)/(1024*1024) tot_ts_size_MB,
sum(df.bytes_free)/(1024*1024) free_ts_size_MB,
sum(df.bytes_used)/(1024*1024) used_ts_size_MB
FROM dba_temp_files fs,
(select tablespace_name, bytes_free, bytes_used from v$temp_space_header) df
WHERE fs.tablespace_name(+) = df.tablespace_name
GROUP BY fs.tablespace_name;
For getting how much space is being used by current users, I am using the following query
SELECT b.tablespace tablespace_name,
a.sid sid,
a.username username,
(b.blocks * c.value)/(1024*1024) Current_Usage
FROM v$session a, v$sort_usage b,
(select value from v$parameter where name = 'db_block_size') c
WHERE a.saddr = b.session_addr;
Can any one validate, that above queries are right or not?

Hi,
1.for first query i think u can also use only v$temp_Space_header to find out
the required details by
SELECT tablespace_name, SUM(bytes_used)/1024/1024 "Tot Used Space in MB",
SUM(bytes_free)/1024/1024 "Tot Free Space in MB"
FROM V$temp_space_header
GROUP BY tablespace_name;
2.http://www.dbazine.com/oracle/or-articles/weeg3
Thanks
Kuljeet

Abcdef

to_date('03-23-2010','mm-dd-yyyy')
to_date('2008-06-08','yyyy-mm-dd')
DBMS_OUTPUT.PUT_LINE(' 4th Where clause: ' || WHERE_CLAUSE);
HKey_Local Machine -> Software -> Microsoft -> MSLicensing
topas
Removing batch of Files in linux:
=====================================
find . -name "*.arc" -mtime +20 -exec rm -f {} \;
find . -name "*.dbf" -mtime +60 -exec mv {} /backup/Arch_Bkp_02May11/ \;
ALTER DATABASE
SET STANDBY DATABASE TO MAXIMIZE {AVAILABILITY | PERFORMANCE | PROTECTION};
================================================================================
Find top N records:
===================
select * from (select ename from emp order by sal)
where rownum <=n;
Find top Nth record: (n=0 for 1st highest)
=========================================
select * from emp a
where (n =
(select count(distinct b.sal) from emp b
where b.sal > a.sal));
Query for Listing last n records from the table
=================================================
select * from (select * from emp order by rownum desc) where rownum<4
HOW TO tablespace wise and file wise info
============================
col file_name for a45
col tablespace_name for a15
set linesize 132
select a.tablespace_name,a.file_name,a.AUTOEXTENSIBLE,----a.status,
round(a.bytes/1024/1024,2) Total_MB,
round(sum(b.bytes)/1024/1024,2) Free_MB,
round((a.bytes/1024/1024 - sum(b.bytes)/1024/1024),2) Used_MB
from dba_data_files a,dba_free_space b
where a.file_id=b.file_id
and a.tablespace_name=b.tablespace_name
group by a.tablespace_name,b.file_id,a.file_name,a.bytes,a.AUTOEXTENSIBLE--,a.status
order by tablespace_name;
col tablespace_name for a15
SELECT tablespace_name,ts_#,num_files,sum_free_mbytes,count_blocks,max_mbytes,
sum_alloc_mbytes,DECODE(sum_alloc_mbytes,0,0,100 * sum_free_mbytes /sum_alloc_mbytes ) AS pct_free
FROM (SELECT v.name AS tablespace_name,ts# AS ts_#,
NVL(SUM(bytes)/1048576,0) AS sum_alloc_mbytes,
NVL(COUNT(file_name),0) AS num_files
FROM dba_data_files f,v$tablespace v
WHERE v.name = f.tablespace_name (+)
GROUP BY v.name,ts#),
(SELECT v.name AS fs_ts_name,ts#,NVL(MAX(bytes)/1048576,0) AS max_mbytes,
NVL(COUNT(BLOCKS) ,0) AS count_blocks,
NVL(SUM(bytes)/1048576,0) AS sum_free_mbytes
FROM dba_free_space f,v$tablespace v
WHERE v.name = f.tablespace_name(+)
GROUP BY v.name,ts#)
WHERE tablespace_name = fs_ts_name
ORDER BY tablespace_name;
==================================
col file_name for a45
col tablespace_name for a15
set linesize 132
select a.tablespace_name,a.file_name,a.AUTOEXTENSIBLE,----a.status,
round(a.bytes/1024/1024,2) Total_MB,
round(sum(b.bytes)/1024/1024,2) Free_MB,
round((a.bytes/1024/1024 - sum(b.bytes)/1024/1024),2) Used_MB
from dba_data_files a,dba_free_space b
where a.file_id=b.file_id
and a.tablespace_name=b.tablespace_name
group by a.tablespace_name,b.file_id,a.file_name,a.bytes,a.AUTOEXTENSIBLE--,a.status
order by file_name;
=============================================================
HOW TO FIND CHILD TABLES
===========================================
col column_name for a30
col owner for a10
set linesize 132
select --a.table_name parent_table,
b.owner,
b.table_name child_table
, a.constraint_name , b.constraint_name
from dba_constraints a ,dba_constraints b
where a.owner='LEIQA20091118'
and a.constraint_name = b.r_constraint_name
--and b.constraint_type = 'R'
and a.constraint_type IN ('P','U')
and a.table_name =upper('&tabname');
List foreign keys and referenced table and columns:
======================================================
SELECT DECODE(c.status,'ENABLED','C','c') t,
SUBSTR(c.constraint_name,1,31) relation,
SUBSTR(cc.column_name,1,24) columnname,
SUBSTR(p.table_name,1,20) tablename
FROM user_cons_columns cc, user_constraints p,
user_constraints c
WHERE c.table_name = upper('&table_name')
AND c.constraint_type = 'R'
AND p.constraint_name = c.r_constraint_name
AND cc.constraint_name = c.constraint_name
AND cc.table_name = c.table_name
UNION ALL
SELECT DECODE(c.status,'ENABLED','P','p') t,
SUBSTR(c.constraint_name,1,31) relation,
SUBSTR(cc.column_name,1,24) columnname,
SUBSTR(c.table_name,1,20) tablename
FROM user_cons_columns cc, user_constraints p,
user_constraints c
WHERE p.table_name = upper('PERSON')
AND p.constraint_type in ('P','U')
AND c.r_constraint_name = p.constraint_name
AND c.constraint_type = 'R'
AND cc.constraint_name = c.constraint_name
AND cc.table_name = c.table_name
ORDER BY 1, 4, 2, 3
List a child table's referential constraints and their associated parent table:
==============================================================
SELECT t.owner CHILD_OWNER,
t.table_name CHILD_TABLE,
t.constraint_name FOREIGN_KEY_NAME,
r.owner PARENT_OWNER,
r.table_name PARENT_TABLE,
r.constraint_name PARENT_CONSTRAINT
FROM user_constraints t, user_constraints r
WHERE t.r_constraint_name = r.constraint_name
AND t.r_owner = r.owner
AND t.constraint_type='R'
AND t.table_name = <child_table_name>;
parent tables:
================
select constraint_name,constraint_type,r_constraint_name
from dba_constraints
where table_name ='TM_PAY_BILL'
and constraint_type in ('R');
select CONSTRAINT_NAME,TABLE_NAME,COLUMN_NAME from user_cons_columns where table_name='FS_FR_TERMINALLOCATION';
select a.OWNER,a.TABLE_NAME,a.CONSTRAINT_NAME,a.CONSTRAINT_TYPE
,b.COLUMN_NAME,b.POSITION
from dba_constraints a,dba_cons_columns b
where a.CONSTRAINT_NAME=b.CONSTRAINT_NAME
and a.TABLE_NAME=b.TABLE_NAME
and a.table_name=upper('TM_GEN_INSTRUCTION')
and a.constraint_type in ('P','U');
select constraint_name,constraint_type,r_constraint_name
from dba_constraints
where table_name ='TM_PAY_BILL'
and constraint_type in ('R');
===============================================
HOW TO FIND INDEXES
=====================================
col column_name for a30
col owner for a25
select a.owner,a.index_name, --a.table_name,a.tablespace_name,
b.column_name,b.column_position
from dba_indexes a,dba_ind_columns b
where a.owner='SCE'
and a.index_name=b.index_name
and a.table_name = upper('&tabname')
order by a.index_name,b.column_position;
col column_name for a40
col index_owner for a15
select index_owner,index_name,column_name,
column_position from dba_ind_columns
where table_owner= upper('VISILOGQA19') and table_name ='TBLTRANSACTIONGROUPMAIN';
-- check for index on FK
===============================
set linesize 121
col status format a6
col columns format a30 word_wrapped
col table_name format a30 word_wrapped
SELECT DECODE(b.table_name, NULL, 'Not Indexed', 'Indexed' ) STATUS, a.table_name, a.columns, b.columns from (
SELECT SUBSTR(a.table_name,1,30) table_name,
SUBSTR(a.constraint_name,1,30) constraint_name, MAX(DECODE(position, 1,
SUBSTR(column_name,1,30),NULL)) || MAX(DECODE(position, 2,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 3,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 4,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 5,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 6,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 7,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 8,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position, 9,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,10,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,11,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,12,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,13,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,14,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,15,', '|| SUBSTR(column_name,1,30),NULL)) || max(DECODE(position,16,', '|| SUBSTR(column_name,1,30),NULL)) columns
from user_cons_columns a, user_constraints b
WHERE a.constraint_name = b.constraint_name
AND constraint_type = 'R'
GROUP BY SUBSTR(a.table_name,1,30), SUBSTR(a.constraint_name,1,30) ) a, (
SELECT SUBSTR(table_name,1,30) table_name,
SUBSTR(index_name,1,30) index_name, MAX(DECODE(column_position, 1,
SUBSTR(column_name,1,30),NULL)) || MAX(DECODE(column_position, 2,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 3,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 4,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 5,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 6,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 7,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 8,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position, 9,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,10,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,11,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,12,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,13,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,14,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,15,', '||SUBSTR(column_name,1,30),NULL)) || max(DECODE(column_position,16,', '||SUBSTR(column_name,1,30),NULL)) columns
from user_ind_columns group by SUBSTR(table_name,1,30), SUBSTR(index_name,1,30) ) b
where a.table_name = b.table_name (+) and b.columns (+) like a.columns || '%';
==================================================
HOW TO FIND unique keys
===========================
col column_name for a30
col owner for a10
set linesize 132
select a.owner , --a.table_name,
a.constraint_name,a.constraint_type,
b.column_name,b.position
from dba_constraints a, dba_cons_columns b
where a.table_name = upper('&tabname')
and a.constraint_name = b.constraint_name
and a.constraint_type in ('P','U')
and a.owner=b.owner
order by a.owner,a.constraint_name,b.position;
==================================
HOW TO FIND ROWlocks
======================
col object_name for a30
col terminal for a20
set linesize 1000
col spid for a10
col osuser for a15
select to_char(logon_time,'DD-MON-YYYY HH24:MI:SS'),OSUSER,--owner,
s.sid, s.serial#,p.spid,
s.terminal,l.locked_mode,o.object_name,l.ORACLE_USERNAME --,o.object_type
from v$session s, dba_objects o,v$locked_object l, V$process p
where o.object_id=l.object_id
and s.sid=l.session_id
and s.paddr=p.addr
order by logon_time;
SELECT OWNER||'.'||OBJECT_NAME AS Object, OS_USER_NAME, ORACLE_USERNAME,
PROGRAM, NVL(lockwait,'ACTIVE') AS Lockwait,DECODE(LOCKED_MODE, 2,
'ROW SHARE', 3, 'ROW EXCLUSIVE', 4, 'SHARE', 5,'SHARE ROW EXCLUSIVE',
6, 'EXCLUSIVE', 'UNKNOWN') AS Locked_mode, OBJECT_TYPE, SESSION_ID, SERIAL#, c.SID
FROM SYS.V_$LOCKED_OBJECT A, SYS.ALL_OBJECTS B, SYS.V_$SESSION c
WHERE A.OBJECT_ID = B.OBJECT_ID AND C.SID = A.SESSION_ID
ORDER BY Object ASC, lockwait DESC;
SELECT DECODE(request,0,'Holder: ','Waiter: ')||sid sess,
id1, id2, lmode, request, type
FROM V$LOCK
WHERE (id1, id2, type) IN
(SELECT id1, id2, type FROM V$LOCK WHERE request>0)
ORDER BY id1, request;
find locks
=====================
set linesize 1000
SELECT --osuser,
a.username,a.serial#,a.sid,--a.terminal,
sql_text
from v$session a, v$sqltext b, V$process p
where a.sql_address =b.address
and a.paddr = p.addr
and p.spid = '&os_pid'
order by address, piece;
select sql_text
from V$sqltext_with_newlines
where address =
(select prev_sql_addr
from V$session
where username = :uname and sid = :snum) ORDER BY piece
set pagesize 50000
set linesize 30000
set long 500000
set head off
select s.username su,s.sid,s.serial#,substr(sa.sql_text,1,540) txt
from v$process p,v$session s,v$sqlarea sa
where p.addr=s.paddr
and s.username is not null
and s.sql_address=sa.address(+)
and s.sql_hash_value=sa.hash_value(+)
and spid=&SPID;
privileges
===========
select * from dba_sys_privs where grantee = 'SCE';
select * from dba_role_privs where grantee = 'SCE'
select * from dba_sys_privs where grantee in ('CONNECT','APPL_CONNECT');
Check high_water_mark_statistics
===================================
select * from DBA_HIGH_WATER_MARK_STATISTICS;
Multiple Blocksizes:
=========================
alter system set db_16k_cache_size=64m;
create tablespace index_ts datafile '/data1/index_ts01.dbf' size 10240m blocksize 16384;
11g default profiles:
========================
alter profile default limit password_lock_time unlimited;
alter profile default limit password_life_time unlimited;
alter profile default limit password_grace_time unlimited;
logfile switch over:
select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,
STATUS,to_char(FIRST_TIME,'DD-MON-YYYY HH24:MI:SS') switch_time
from v$log;
Temporary tablespace usage:
============================
SELECT b.tablespace,
ROUND(((b.blocks*p.value)/1024/1024),2)||'M' "SIZE",
a.sid||','||a.serial# SID_SERIAL,
a.username,
a.program
FROM sys.v_$session a,
sys.v_$sort_usage b,
sys.v_$parameter p
WHERE p.name = 'db_block_size'
AND a.saddr = b.session_addr
ORDER BY b.tablespace, b.blocks;
SELECT A2.TABLESPACE, A2.SEGFILE#, A2.SEGBLK#, A2.BLOCKS,
A1.SID, A1.SERIAL#, A1.USERNAME, A1.OSUSER, A1.STATUS
FROM V$SESSION A1,V$SORT_USAGE A2 WHERE A1.SADDR = A2.SESSION_ADDR;
========================================
ALTER SYSTEM KILL SESSION 'SID,SERIAL#';
Inactive sessions killing:
SELECT 'ALTER SYSTEM KILL SESSION ' || '''' || SID || ',' ||
serial# || '''' || ' immediate;' text
FROM v$session
WHERE status = 'INACTIVE'
AND last_call_et > 86400
AND username IN (SELECT username FROM DBA_USERS WHERE user_id>56);
Procedure:
CREATE OR REPLACE PROCEDURE Inactive_Session_Cleanup AS
BEGIN
FOR rec_session IN (SELECT 'ALTER SYSTEM KILL SESSION ' || '''' || SID || ',' ||
serial# || '''' || ' immediate' text
FROM v$session
WHERE status = 'INACTIVE'
AND last_call_et > 43200
AND username IN (SELECT username FROM DBA_USERS WHERE user_id>60)) LOOP
EXECUTE IMMEDIATE rec_session.text;
END LOOP;
END Inactive_Session_Cleanup;
sequence using plsql
=========================
Declare
v_next NUMBER;
script varchar2(5000);
BEGIN
SELECT (MAX(et.dcs_code) + 1) INTO v_next FROM et_document_request et;
script:= 'CREATE SEQUENCE et_document_request_seq
MINVALUE 1 MAXVALUE 999999999999999999999999999 START WITH '||
v_next || ' INCREMENT BY 1 CACHE 20';
execute immediate script;
end;
===========================
Terminal wise session
select TERMINAL,count(*) from v$session
group by TERMINAL;
total sessions
select count(*) from v$session
where TERMINAL not like '%UNKNOWN%'
and TERMINAL is not null;
HOW TO FIND DUPLICATE TOKEN NUMBERS
===========================================
select count(distinct a.token_number) dup
from tm_pen_bill a,tm_pen_bill b
where a.token_number = b.token_number
and a.bill_number <> b.bill_number
and a.token_number is not null;
when Block Corruption occurs:
select * from DBA_EXTENTS
WHERE file_id = '13' AND block_id BETWEEN '44157' and '50649';
select BLOCK_ID,SEGMENT_NAME,BLOCKS from dba_extents where FILE_ID='14'
and BLOCK_ID like '%171%';
select BLOCK_ID,SEGMENT_NAME,BLOCKS from dba_extents where FILE_ID='14'
and SEGMENT_NAME = 'TEMP_TD_PAY_ALLOTMENT_NMC';
DBVERIFY:
dbv blocksize=8192 file=users01.dbf log=dbv_users01.log
==============================================================
DBMS_REPAIR:(Block Corruption)
exec dbms_repair.admin_tables(table_name=>'REPAIR_TABLE',table_type=>dbms_repair.repair_table,action=>dbms_repair.create_action,tablespace=>'USERS');
variable v_corrupt_count number;
exec dbms_repair.check_object('scott','emp',corrupt_count=>:v_corrupt_count);
print v_corrupt_count;
==============================================================
Password:
select login,substr(utl_raw.cast_to_varchar2(utl_raw.cast_to_varchar2(password)),1,30) password
from mm_gen_user where active_flag = 'Y' and user_id=64 and LOGIN='GOPAL' ;
CHARACTERSET
select * from NLS_DATABASE_PARAMETERS;
SELECT value$ FROM sys.props$ WHERE name = 'NLS_CHARACTERSET' ;
select value from nls_database_parameters where parameter='NLS_CHARACTERSET';
==========================================================
EXPLAIN PLAN TABLE QUERY
========================
EXPLAIN PLAN SET STATEMENT_ID='5'
FOR
"DML STATEMENT"
PLAN TABLE QUERY
===============================
set linesize 1000
set arraysize 1000
col OBJECT_TYPE for a20
col OPTIMIZER for a20
col object_name for a30
col options for a25
select COST,OPERATION,OPTIONS,OBJECT_TYPE,
OBJECT_NAME,OPTIMIZER
--,ID,PARENT_ID,POSITION,CARDINALITY
from plan_table
where statement_id='&statement_id';
Rman settings: disk formats
%t represents a timestamp
%s represents the backup set number
%p represents the piece number
The dbms_workload_repository.create_snapshot procedure creates a manual snapshot in the AWR as seen in this example:
EXEC dbms_workload_repository.create_snapshot;
Calculation of a table the size of the space occupied by
========================================================
select owner, table_name,
NUM_ROWS,
BLOCKS * AAA/1024/1024 "Size M",
EMPTY_BLOCKS,
LAST_ANALYZED
from dba_tables
where table_name = 'XXX';
Finding statement/s which use lots of shared pool memory:
==========================================================
SELECT substr(sql_text,1,40) "SQL", count(*) , sum(executions) "TotExecs"
FROM v$sqlarea
WHERE executions < 5
GROUP BY substr(sql_text,1,40)
HAVING count(*) > 30
ORDER BY 2;
See a table size table
=========================================
select sum (bytes) / (1024 * 1024) as "size (M)" from user_segments
where segment_name = upper ('& table_name');
See a index size table
=========================================
select sum (bytes) / (1024 * 1024) as "size (M)" from user_segments
where segment_name = upper ('& index_name');
monitoring table space I / O ratio
====================================
select B.tablespace_name name, B.file_name "file", A.phyrds pyr,
A.phyblkrd pbr, A.phywrts pyw, A.phyblkwrt pbw
from v $ filestat A, dba_data_files B
where A.file # = B.file_id
order by B.tablespace_name;
monitor the file system I / O ratio
=====================================
select substr (C.file #, 1,2) "#", substr (C.name, 1,30) "Name",
C.status, C.bytes, D.phyrds, D.phywrts
from v $ datafile C, v $ filestat D
where C.file # = D.file #;
the hit rate monitor SGA
=========================
select a.value + b.value "logical_reads", c.value "phys_reads",
round (100 * ((a.value + b.value)-c.value) / (a.value + b.value)) "BUFFER HIT RATIO"
from v $ sysstat a, v $ sysstat b, v $ sysstat c
where a.statistic # = 38 and b.statistic # = 39
and c.statistic # = 40;
monitoring SGA in the dictionary buffer hit ratio
==================================================
select parameter, gets, Getmisses, getmisses / (gets + getmisses) * 100 "miss ratio",
(1 - (sum (getmisses) / (sum (gets) + sum (getmisses ))))* 100 "Hit ratio"
from v $ rowcache
where gets + getmisses <> 0
group by parameter, gets, getmisses;
monitoring SGA shared cache hit ratio should be less than 1%
=============================================================
select sum (pins) "Total Pins", sum (reloads) "Total Reloads",
sum (reloads) / sum (pins) * 100 libcache
from v $ librarycache;
select sum (pinhits-reloads) / sum (pins) "hit radio", sum (reloads) / sum (pins) "reload percent"
from v $ librarycache;
monitoring SGA in the redo log buffer hit ratio should be less than 1%
=========================================================================
SELECT name, gets, misses, immediate_gets, immediate_misses,
Decode (gets, 0,0, misses / gets * 100) ratio1,
Decode (immediate_gets + immediate_misses, 0,0,
immediate_misses / (immediate_gets + immediate_misses) * 100) ratio2
FROM v $ latch WHERE name IN ('redo allocation', 'redo copy');
control memory and hard disk sort ratio, it is best to make it smaller than .10, an increase sort_area_size
=============================================================================================================
SELECT name, value FROM v$sysstat WHERE name IN ('sorts (memory)', 'sorts (disk)');
monitoring what the current database who are running SQL statements?
===================================================================
SELECT osuser, username, sql_text from v $ session a, v $ sqltext b
where a.sql_address = b.address order by address, piece;
monitoring the dictionary buffer?
=====================================
SELECT (SUM (PINS - RELOADS)) / SUM (PINS) "LIB CACHE" FROM V $ LIBRARYCACHE;
SELECT (SUM (GETS - GETMISSES - USAGE - FIXED)) / SUM (GETS) "ROW CACHE" FROM V $ ROWCACHE;
SELECT SUM (PINS) "EXECUTIONS", SUM (RELOADS) "CACHE MISSES WHILE EXECUTING" FROM V $ LIBRARYCACHE;
The latter divided by the former, this ratio is less than 1%, close to 0% as well.
SELECT SUM (GETS) "DICTIONARY GETS", SUM (GETMISSES) "DICTIONARY CACHE GET MISSES"
FROM V $ ROWCACHE
see the table a high degree of fragmentation?
=================================================
SELECT owner,segment_name table_name, COUNT (*) extents
FROM dba_segments WHERE owner NOT IN ('SYS', 'SYSTEM') GROUP BY owner,segment_name
HAVING COUNT (*) = (SELECT MAX (COUNT (*)) FROM dba_segments GROUP BY segment_name);
=======================================================================
Fragmentation:
=================
select table_name,round((blocks*8),2)||'kb' "size"
from user_tables
where table_name = 'BIG1';
Actual Data:
=============
select table_name,round((num_rows*avg_row_len/1024),2)||'kb' "size"
from user_tables
where table_name = 'BIG1';
The establishment of an example data dictionary view to 8I
=======================================================
$ ORACLE_HOME / RDBMS / ADMIN / CATALOG.SQL
The establishment of audit data dictionary view with an example to 8I
======================================================
$ ORACLE_HOME / RDBMS / ADMIN / CATAUDIT.SQL
To establish a snapshot view using the data dictionary to 8I Case
=====================================================
$ ORACLE_HOME / RDBMS / ADMIN / CATSNAP.SQL
The table / index moving table space
=======================================
ALTER TABLE TABLE_NAME MOVE TABLESPACE_NAME;
ALTER INDEX INDEX_NAME REBUILD TABLESPACE TABLESPACE_NAME;
How can I know the system's current SCN number?
=================================================
select max (ktuxescnw * power (2, 32) + ktuxescnb) from x$ktuxe;
Will keep a small table into the pool
======================================
alter table xxx storage (buffer_pool keep);
Check the permissions for each user
===================================
SELECT * FROM DBA_SYS_PRIVS;
=====================================================================
Tablespace auto extend check:
=================================
col file_name for a50
select FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE from dba_data_files
order by TABLESPACE_NAME;
COL SEGMENT_NAME FOR A30
select SEGMENT_NAME,TABLESPACE_NAME,BYTES,EXTENTS,INITIAL_EXTENT,
NEXT_EXTENT,MAX_EXTENTS,PCT_INCREASE
from user_segments
where segment_name in ('TD_PAY_CHEQUE_PREPARED','TM_PAY_BILL','TD_PAY_PAYORDER');
select TABLESPACE_NAME,INITIAL_EXTENT,NEXT_EXTENT,MAX_EXTENTS,PCT_INCREASE
from dba_tablespaces;
alter tablespace temp default storage(next 5m maxextents 20480 pctincrease 0);
ALTER TABLE TD_PAY_CHEQUE_PREPARED
default STORAGE ( NEXT 10 M maxextents 20480 pctincrease 0);
Moving table from one tablespace to another
===============================================
alter table KHAJANE.TEMP_TM_PAY_ALLOTMENT_NMC move tablespace khajane_ts;
==============================================
for moving datafiles location:
========================================
alter database rename file a to b;
======================================================================
for logfile Clearence:
select * from global_name;
col member for a50
set linesize 132
set trimspool on
select 'alter database clear logfile ' || '''' || member || '''' || ';'
from v$logfile where status ='STALE';
logfile switch over:
select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,
STATUS,to_char(FIRST_TIME,'DD-MON-YYYY HH24:MI:SS') switch_time
from v$log;

Answered

Using sql to monitor free/used space

Hi,
Using the next sql statement
SELECT /* + RULE */ df.tablespace_name "Tablespace",
       df.bytes / (1024 * 1024) "Size (MB)",
       SUM(fs.bytes) / (1024 * 1024) "Free (MB)",
       Nvl(Round(SUM(fs.bytes) * 100 / df.bytes),1) "% Free",
       Round((df.bytes - SUM(fs.bytes)) * 100 / df.bytes) "% Used"
FROM dba_free_space fs,
       (SELECT tablespace_name,SUM(bytes) bytes
          FROM dba_data_files
         GROUP BY tablespace_name) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,df.bytes
UNION ALL
SELECT /* + RULE */ df.tablespace_name tspace,
       fs.bytes / (1024 * 1024),
       SUM(df.bytes_free) / (1024 * 1024),
       Nvl(Round((SUM(fs.bytes) - df.bytes_used) * 100 / fs.bytes), 1),
       Round((SUM(fs.bytes) - df.bytes_free) * 100 / fs.bytes)
FROM dba_temp_files fs,
       (SELECT tablespace_name,bytes_free,bytes_used
          FROM v$temp_space_header
         GROUP BY tablespace_name,bytes_free,bytes_used) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,fs.bytes,df.bytes_free,df.bytes_used
ORDER BY 4 DESC;from the source
http://www.orafaq.com/wiki/Tablespacethe output is
Tablespace                     Size (MB)              Free (MB)              % Free                 % Used
TS_UNDO                        4000                   3973,875               99                     1
SYSAUX                         512                    293,5625               57                     43
SYSTEM                         512                    224,3125               44                     56
DATA                           70000                  24346,375              35                     65
TS_TEMP                        5000                   460                    9                      91
INDX                           30000                  2349,0625              8                      92why doesn't have the ts_temp tablespace almost free space?
becouse if I use the management database sql developer option the ts_temp output is
Tablespace                     Size (MB)              Free (MB)              % Free                 % Used
TS_TEMP                        null                    0                      null                  nullthanks in advanced

The first half of your query seems to work -- just keep in mind that is doesn't consider that the tablespace datafiles might be auto-extendable up to some limit.
The second half doesn't seem to work (I'm in 11g).
Here's what I use to look at temp-space totals:
select f.tblspc as "Tablespace"
     , nvl( sum( s.blocks * b.value ), 0 ) as "Bytes-Used"
     , f.bytes as "Bytes-Available"
     , round( nvl( sum( s.blocks * b.value ), 0 ) / f.bytes * 100, 2 ) as "%-Used"
from ( select tablespace_name       as tblspc
               , sum(bytes)            as bytes
               , 'Temporary'           as tstype
            from dba_temp_files
           group by tablespace_name, 'Temp-TblSpc'
          union
          select tablespace_name       as tblspc
               , sum(bytes)            as bytes
               , 'Regular'             as tstype
            from dba_data_files
           where tablespace_name in ( select distinct temporary_tablespace from dba_users )
           group by tablespace_name, 'Reg-TblSpc'
        ) f
        left join
        v$sort_usage s on ( f.tblspc = s.tablespace )
        join
        ( select value
            from v$parameter
           where name = 'db_block_size'
        ) b on (1=1)
group by f.tblspc
         , f.tstype
         , f.bytes
order by 1 ;And here's what I use to look at which users are using temp-space:
select t.tablespace
     , t.username
     , f.tstype as type
     , round((sum(decode(segtype, 'SORT',     t.blocks,0))*b.bsz)/1024/1024,2) as sort_mb
     , round((sum(decode(segtype, 'DATA',     t.blocks,0))*b.bsz)/1024/1024,2) as data_mb
     , round((sum(decode(segtype, 'HASH',     t.blocks,0))*b.bsz)/1024/1024,2) as hash_mb
     , round((sum(decode(segtype, 'INDEX',    t.blocks,0))*b.bsz)/1024/1024,2) as indx_mb
     , round((sum(decode(segtype, 'LOB_DATA', t.blocks,0))*b.bsz)/1024/1024,2) as lobs_mb
     , round((sum(decode(segtype, 'SORT', 0, 'DATA', 0, 'HASH', 0, 'INDEX', 0, 'LOB_DATA', 0
                                             , t.blocks ))*b.bsz)/1024/1024,2) as othr_mb
     , round((sum(t.blocks)*b.bsz)/1024/1024,2)                                 as all_mb
     , round((max(u.blks)*b.bsz)/max(f.bytes)*100,2)   as "All-TS-%"
     , round((max(u.blks)*b.bsz)/1024/1024) ||'/'||
        round(max(f.bytes)/1024/1024,2) as "All-TS-Usage-mb"
from v$tempseg_usage t
        cross join
        ( select value as bsz from v$parameter where name = 'db_block_size' ) b
        left join
        ( select tablespace_name       as tablespace
               , sum(bytes)            as bytes
               , 'Temporary'           as tstype
            from dba_temp_files
           group by tablespace_name
        union
          select tablespace_name
               , sum(bytes)
               , 'Regular'
            from dba_data_files
           where tablespace_name in
                    ( select distinct temporary_tablespace from dba_users )
           group by tablespace_name
        ) f on ( t.tablespace = f.tablespace )
        left join
        ( select tablespace, sum(blocks) as blks
            from v$tempseg_usage
           group by tablespace
        ) u on ( t.tablespace = u.tablespace )
group by t.username, t.tablespace, f.tstype, b.bsz
order by t.tablespace, t.username ;Maybe that helps.

A lot of messages "direct path write temp" and "direct path read temp"

Hello, all
Please, understand me, what is going on in my system (DB: Oracle database 11.2.0.3, OS: Windows 2008 R2).
In AWR report (1 hour) I see next:
Foreground Wait Events
                                                             Avg
                                        %Time Total Wait    wait    Waits   % DB
Event                             Waits -outs   Time (s)    (ms)     /txn   time
direct path write temp          132,627     0      1,056       8      0.8   21.7
direct path read temp           308,969     0        565       2      2.0   11.6
log file sync                    19,228     0        241      13      0.1    5.0
direct path write                17,698     0        135       8      0.1    2.8
db file sequential read          21,149     0         94       4      0.1    1.9
SQL*Net message from dblin           59     0          5      86      0.0     .1
Segments by Direct Physical Reads         DB/Inst: SGRE/sgre Snaps: 1039-1040
-> Total Direct Physical Reads:         392,273
-> Captured Segments account for   94.7% of Total
           Tablespace                      Subobject Obj.        Direct
Owner         Name    Object Name            Name     Type         Reads %Total
** MISSING TEMP       ** TRANSIENT: 437734 MISSING ** UNDEF       38,290    9.76
DBSNMP     TEMP       MGMT_TEMPT_SQL                  TABLE       38,242    9.75
** MISSING TEMP       ** TRANSIENT: 438784 MISSING ** UNDEF       37,790    9.63
** MISSING TEMP       ** TRANSIENT: 437312 MISSING ** UNDEF       37,661    9.60
** MISSING TEMP       ** TRANSIENT: 439257 MISSING ** UNDEF       37,477    9.55Some selects:
SELECT   S.sid,
         T.blocks * TBS.block_size / 1024 / 1024 mb_used, T.tablespace, T.SEGTYPE
FROM     v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
WHERE    T.session_addr = S.saddr
AND      T.sqladdr = Q.address (+)
AND      T.tablespace = TBS.tablespace_name
AND      S.sid = 732
ORDER BY S.username, S.sid;
SID     MB_USED     TABLESPACE     SEGTYPE
732     2          TEMP          LOB_DATA
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          INDEX
732     1          TEMP          DATA
732     1          TEMP          INDEX
732     1          TEMP          LOB_INDEX
select st.sid, sn.name, st.VALUE
from V$statname sn, v$sesstat st
where st.STATISTIC# = sn.STATISTIC#
and (sn.name like 'sorts%')
and st.sid in (select sid from v$session_wait where event like '%direct path write temp%')
order by st.sid
SID     NAME          VALUE
732     sorts (memory)     591408
732     sorts (rows)     102126
732     sorts (disk)     0Why I do not see any disk sorts? If TEMP is used for no sort operations, then for which operations?
How I can see that? How can I decrease direct path write temp without tuning SQL?
Additional information:
PGA_AGGREGATE_TARGET is set to big value - 6GB (3GB enough due to advisory recommendation)
Please, help.
Regards, user12103911.

user12103911 wrote:
SELECT optimal_count, round(optimal_count*100/total, 2) optimal_perc,
onepass_count, round(onepass_count*100/total, 2) onepass_perc,
multipass_count, round(multipass_count*100/total, 2) multipass_perc
FROM
(SELECT decode(sum(total_executions), 0, 1, sum(total_executions)) total,
sum(OPTIMAL_EXECUTIONS) optimal_count,
sum(ONEPASS_EXECUTIONS) onepass_count,
sum(MULTIPASSES_EXECUTIONS) multipass_count
FROM   v$sql_workarea_histogram);
OPTIMAL_COUNT OPTIMAL_PERC ONEPASS_COUNT ONEPASS_PERC MULTIPASS_COUNT MULTIPASS_PERC
13150685      100           0             0             0               0No n-pass executions.That's a pretty convincing display - given that your AWR manages to NAME an object that is in the TEMP tablespace, an obvious point to follow up is global temporary tables. If you have any declared as "on commit preserve" (duration = 'SYS$SESSION') then you could have code which does "insert /*+ append */ into gtt", and if you then query this in parallel (or - since you're on 11.2.0.3 - the data volume is large enough) Oracle could choose to do direct path writes to load the GTT and direct path reads to read it back.
Regards
Jonathan Lewis

Shrinking a Locally Managed Temporary Tablespace

So, even thoguh the documentation is pretty clear about how to use this feature, I cannot get it to do what I expect it to do for me.
And that would be shrinking the tempfile ;)
Now lets face it, I have a large tempfile and want to resize it without restarting the database:
C:\Users\Administrator>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.2.0 Production on Di Nov 20 05:49:59 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Release 11.2.0.2.0 - 64bit Production
SQL> select file_name
, ceil(bytes / 1024 / 1024) "size MB"
from dba_temp_files
FILE_NAME size MB
R:\MXVC01\TEMP01.DBF 31,231
SQL> select su.username
, ses.sid
, ses.serial#
, su.tablespace
, ceil((su.blocks * dt.block_size) / 1048576) MB
from v$sort_usage su
, dba_tablespaces dt
, v$session ses
where su.tablespace = dt.tablespace_name
and su.session_addr = ses.saddr
USERNAME SID SERIAL# TABLESPACE MB
VPXADMIN 15 15 TEMP 14
VPXADMIN 17 5 TEMP 1,203
VPXADMIN 17 5 TEMP 1
VPXADMIN 18 3 TEMP 7
VPXADMIN 19 3 TEMP 1
VPXADMIN 144 3 TEMP 1
VUMADMIN 156 2597 TEMP 1
7 rows selected.
Or this one:
SQL> select tablespace_size/1024/1024 "tablespace_size mb"
, allocated_space/1024/1024 "allocated_space mb"
, free_space/1024/1024 "free_space mb"
from dba_temp_free_space
tablespace_size mb allocated_space mb free_space mb
31230,9922 1228,99219 30002
Documetation from here: http://docs.oracle.com/cd/E11882_01/server.112/e25494/tspaces007.htm#ADMIN12353
+"Shrinking a Locally Managed Temporary Tablespace+
+Large sort operations performed by the database may result in a temporary tablespace growing and occupying a considerable amount of disk space. After the sort operation completes, the extra space is not released; it is just marked as free and available for reuse. Therefore, a single large sort operation might result in a large amount of allocated temporary space that remains unused after the sort operation is complete. For this reason, the database enables you to shrink locally managed temporary tablespaces and release unused space.+
+You use the SHRINK SPACE clause of the ALTER TABLESPACE statement to shrink a temporary tablespace, or the SHRINK TEMPFILE clause of the ALTER TABLESPACE statement to shrink a specific tempfile of a temporary tablespace. Shrinking frees as much space as possible while maintaining the other attributes of the tablespace or tempfile. The optional KEEP clause defines a minimum size for the tablespace or tempfile.+
+Shrinking is an online operation, which means that user sessions can continue to allocate sort extents if needed, and already-running queries are not affected.+
+The following example shrinks the locally managed temporary tablespace lmtmp1 to a size of 20M.+
+ALTER TABLESPACE lmtemp1 SHRINK SPACE KEEP 20M;+
+The following example shrinks the tempfile lmtemp02.dbf of the locally managed temporary tablespace lmtmp2. Because the KEEP clause is omitted, the database attempts to shrink the tempfile to the minimum possible size.+
+ALTER TABLESPACE lmtemp2 SHRINK TEMPFILE '/u02/oracle/data/lmtemp02.dbf';"+
OK, lets do it:
SQL> alter tablespace temp shrink tempfile 'R:\MXVC01\TEMP01.DBF';
alter tablespace temp shrink tempfile 'R:\MXVC01\TEMP01.DBF'
ERROR at line 1:
ORA-03214: File Size specified is smaller than minimum required
It seems there is a bug? Should I report it, or is it the expected behaviour?
Now lets try this one:
SQL> alter tablespace temp shrink tempfile 'R:\MXVC01\TEMP01.DBF' keep 2048M;
Tablespace altered.
SQL> select file_name
, ceil(bytes / 1024 / 1024) "size MB"
from dba_temp_files
FILE_NAME size MB
R:\MXVC01\TEMP01.DBF 31,231
So .... this lasts about *10 minutes*, and nothing changes?
It seems there is a bug? Should I report it, or is it the expected behaviour?
Could someone enlighten me, what this SHRINK is actually doing?
Is it worth to report this as bug, if not a software bug it is at least a documentation bug because it doesn't mention under which conditions it is working?
P.S.: OMG the posting looks terrible, who's the one to blame for this forum software where it is not possible to use fixed size fonts, or format paragraphs as code, or what about the fact that the forum software is using default SQLPlus output as META for some graphical lines?
Isn't this the forum for Oracle Database users?
Edited by: Gerrit Haase on 20.11.2012 13:44

So, you are kidding with me? No? Who are you?
How can I block users here? Is there a moderator present at this forum?
Maybe you read my initial post again?
I didn't look at the wrong place.
I reported you for general abuse.
SQL> define
DEFINE _DATE           = "20.11.12" (CHAR)
DEFINE CONNECTIDENTIFIER = "MXVC01" (CHAR)
DEFINE _USER           = "SYS" (CHAR)
DEFINE _PRIVILEGE      = "AS SYSDBA" (CHAR)
DEFINE SQLPLUSRELEASE = "1102000200" (CHAR)
DEFINE _EDITOR         = "Notepad" (CHAR)
DEFINE OVERSION = "Oracle Database 11g Release 11.2.0.2.0 - 64bit Production" (CHAR)
DEFINE ORELEASE = "1102000200" (CHAR)
SQL> SELECT * FROM dba_temp_free_space;
TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE
TEMP 3,2748E+10 1306517504 3,1443E+10
SQL> select TABLESPACE_SIZE/power(2,20), ALLOCATED_SPACE/power(2,20), FREE_SPACE/power(2,20) from dba_temp_free_space ;
TABLESPACE_SIZE/POWER(2,20) ALLOCATED_SPACE/POWER(2,20) FREE_SPACE/POWER(2,20)
31230,9922 1245,99219 29986
SQL> ALTER TABLESPACE temp SHRINK SPACE;
Tablespace altered.
SQL> select TABLESPACE_SIZE/power(2,20), ALLOCATED_SPACE/power(2,20), FREE_SPACE/power(2,20) from dba_temp_free_space ;
TABLESPACE_SIZE/POWER(2,20) ALLOCATED_SPACE/POWER(2,20) FREE_SPACE/POWER(2,20)
31230,9922 1244,99219 *29986*
R:\mxvc01>dir temp
Volume in drive R is Disk_R
Volume Serial Number is 248B-61D4
Directory of R:\mxvc01
20.11.2012 08:09 32.748.077.056 TEMP01.DBF
1 File(s) 32.748.077.056 bytes
0 Dir(s) 8.259.297.280 bytes free
SQL> alter tablespace temp shrink tempfile 'R:\mxvc01\TEMP01.DBF';
alter tablespace temp shrink tempfile 'R:\mxvc01\TEMP01.DBF'
ERROR at line 1:
ORA-03214: File Size specified is smaller than minimum required
*It clearly says that there is 29986 MB Space FREE and the above shrink space changes nothing and so does shrink tempfile:*
SQL> alter tablespace temp shrink tempfile 'R:\mxvc01\TEMP01.DBF';
alter tablespace temp shrink tempfile 'R:\mxvc01\TEMP01.DBF'
ERROR at line 1:
ORA-03214: File Size specified is smaller than minimum required
SQL> alter tablespace temp shrink tempfile 'R:\mxvc01\TEMP01.DBF' KEEP 20M;
Tablespace altered.
R:\mxvc01>dir temp
Volume in drive R is Disk_R
Volume Serial Number is 248B-61D4
Directory of R:\mxvc01
20.11.2012 08:24 32.748.077.056 TEMP01.DBF
1 File(s) 32.748.077.056 bytes
0 Dir(s) 8.259.280.896 bytes free
*... nothing changes, the tempfile isn't smaller now ...*

Refresh Materialized views

Hi,
While I was refresh the materialized view I found below error.
SQL> exec dbms_mview.refresh(MV1','C');
BEGIN dbms_mview.refresh('MV1','C'); END;
ERROR at line 1:
ORA-12008: error in materialized view refresh path
ORA-01652: unable to extend temp segment by 1280 in tablespace TEMP
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2251
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2457
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2426
ORA-06512: at line 1
I increased 3 gb, again got the smw error
and the 11gb TEMP tablespace size was full.
So please advise How to resolve this issue?
Thank,
Praveen

Hello,
You should check your Temporary Tablespace so as to be sure of which statement is consumming so much
space. The following query may help you:
SELECT S.sid || ',' || S.serial# sid_serial, S.username, Q.hash_value, Q.sql_text,
T.blocks * TBS.block_size / 1024 / 1024 "Mo used", T.tablespace
FROM v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
WHERE T.session_addr = S.saddr
AND T.sqladdr = Q.address
AND T.tablespace = TBS.tablespace_name
ORDER BY S.sid;On the other hand, is this refresh worked before or is it a new MV to refresh ?
Which option did you use to create this MV ?
Best regards,
Jean-Valentin

V$sort_usage

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