Sql query hangs..

Hi,
the below query is getting hanged repetedly although the update is happening but its very slow(taking more than 12 hrs )
Please tell the issue.the indexes are prope and table Test1 is going for full table scan.
update Test1 t1 set t1.A =
select t2.ID from Test2 t2 where t1.A = t2.c and t2.c is not null
and t1.d = 58 and t1.e ='Text' and t1.f=t2.g
)where exists
select t2.ID from Test2 t2 where t1.A = t2.c and t2.c is not null
and t1.d = 58 and t1.ORIG_OU_ID ='Text' and t1.f=t2.g
Thanks.

Welcome to the forums !
When your query takes too long:
HOW TO: Post a SQL statement tuning request - template posting
When your query takes too long ...
HTH
Srini

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what do you expect from that poor information.
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Oracle 9.2.0.6; query hangs if partition doesn't exist

Hallo all,
this is the first time I post on this forum.
I work in a group of PL\SQL developers in Italy. Few day ago we had a problem with a query and like to find out what the problem is.
We have an Oracle DB version 9.2.0.6 (old I know) in a production environment. Linux OS.
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Hi Rob,
thank you for your answer.
Sorry if this is not the best forum. I am not very practical.
I try to answer to your questions.
At a first time we thought the query did a full scan on the table. Yes. But even to full scan 16.000.000 records split in no more than 8 partition (at this time) shouldn't take up to 24 hours and never stop running. I think.
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Whew, that truss output is enough to make your eyes bleed!
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Right I have a piece of code which executes an SQL query but no matter what I do the program always hangs whenever it gets to the SQL execute line, I have tried using stmt.execute, executeUpdate and executeQuery and none work.
I can however connect to the database directly and run the same query and it works fine, would be really grateful for some help.
Code snippet is below, and works is never printed to the command line.
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                "'', " +                                           // Spare_Char_02
                "'', " +                                           // Spare_Char_03
                "'', " +                                           // Spare_Char_04
                "'', " +                                           // Spare_Char_05
                "'', " +                                           // Spare_Char_06
                "'', " +                                           // Spare_Char_07
                "'', " +                                           // Spare_Char_08
                "'', " +                                           // Spare_Char_09
                "'', " +                                           // Spare_Char_10
                "'" + OutputDate + "', " +                         // Spare_Date_01 - Must not be null
                "'" + OutputDate + "', " +                         // Spare_Date_02
                "'" + OutputDate + "', " +                         // Spare_Date_03
                "'" + OutputDate + "', " +                         // Spare_Date_04
                "'" + OutputDate + "', " +                         // Spare_Date_05
                "'" + OutputDate + "'" +                           // Spare_Date_06
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Right I didn't know what a prepared statement was so have done a bit of research and come up with the following code, seems to give same error.
I know the connection is working because other SQL code is executing in program before it gets to this point, have included the actual SQL statement as well.
Cheers for your help
       try
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          prepStmt.setString(1,OutExec_Date);
          prepStmt.setString(2, String.valueOf(DatabaseProperties.AppUserID));
          prepStmt.setString(3,OutputStyle);
          prepStmt.setString(4,OutputDate);
          prepStmt.setString(5,GlobVarStore.CopyInvDirectory);
          prepStmt.setString(6,"");
          prepStmt.setString(7,"");
          prepStmt.setString(8,"");
          prepStmt.setString(9,"");
          prepStmt.setString(10,"");
          prepStmt.setString(11,"");
          prepStmt.setString(12,"");
          prepStmt.setString(13,"");
          prepStmt.setString(14,"");
          prepStmt.setString(15,"");
          prepStmt.setString(16,OutputDate);
          prepStmt.setString(17,OutputDate);
          prepStmt.setString(18,OutputDate);
          prepStmt.setString(19,OutputDate);
          prepStmt.setString(20,OutputDate);
          prepStmt.setString(21,OutputDate);
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          prepStmt.executeUpdate();
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       catch(SQLException SQLe)
          SQLe.printStackTrace();
INSERT INTO TH.OUTPUT_DATA_SNAPSHOT_HDR_TH ( EXEC_DATE, USER_ID, OUTPUT_STYLE, OUTPUT_DATE, OUTPUT_FILENAME, SPARE_CHAR_01, SPARE_CHAR_02, SPARE_CHAR_03, SPARE_CHAR_04, SPARE_CHAR_05, SPARE_CHAR_06, SPARE_CHAR_07, SPARE_CHAR_08, SPARE_CHAR_09, SPARE_CHAR_10, SPARE_DATE_01, SPARE_DATE_02, SPARE_DATE_03, SPARE_DATE_04, SPARE_DATE_05, SPARE_DATE_06) VALUES ('09/09/2009', '200', 'INVOICE', '16/09/2009', 'C:\Users\aaronh\DOC20090916163456.txt', '', '', '', '', '', '', '', '', '', '', '16/09/2009', '16/09/2009', '16/09/2009', '16/09/2009', '16/09/2009', '16/09/2009')

[4.0] Production SQL Developer hangs when attempting to expand Java in the Connection Navigator

Folks,
I'm running production SQL Developer on Oracle Linux 5.8 and whenever I click the Java link in the Connections Navigator with a SYS AS SYSDBA connection SQL Developer hangs.
Oracle Enterprise Edition 11.2.0.1.0
SQLDeveloper 4.0.0.13.80
Oracle Linux 6
JDK Version 1.7.0_45
Doing the same thing with user SCOTT (no SYSDBA) works fine (although there are not any Java objects).
Thanks,
Rich

This has been logged as a bug.
The bad plan/performance has been logged as a bug. SQL Developer didn't hang for me - I was able to cancel the query using the Task Progress panel.

SQL Developer hangs periodically

Hi,
I'm connecting to my test instance (Oracle XE) and each 5mins-10mins SQL Developer hangs. It doesn't matter what I'm doing, I can be executing a big query or I wasn't doing anything for a while and then simply consulting Columns of a table and hangs...
I saw the underlying error is:
oracle.javatools.util.CanceledException
     at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:568)
     at oracle.dbtools.raptor.utils.DBObject.getConnection(DBObject.java:323)
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What may I check?
Any help will be appreciated.
Josep

Is this what you mean?
bq. Oracle SQL Developer \\ +     Copyright (c) 2008, Oracle. All rights reserved.+ \\ +     Locking assertion failure. Backtrace:+ \\ +     #0 /usr/lib/libxcb-xlib.so.0 [0x8c900767]+ \\ +     #1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0x8c9008b1]+ \\ +     #2 /usr/lib/libX11.so.6(_XReply+0xfd) [0x8bdb31bd]+ \\ +     #3 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c0738ce]+ \\ +     #4 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c050067]+ \\ +     #5 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c050318]+ \\ +     #6 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0x8c05061f]+ \\ +     #7 [0xb4d413aa]+ \\ +     #8 [0xb4d39f0d]+ \\ +     #9 [0xb4d39f0d]+ \\ +     #10 [0xb4d37249]+ \\ +     #11 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x637338d]+ \\ +     #12 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x64fd168]+ \\ +     #13 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x6373220]+ \\ +     #14 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so(JVM_DoPrivileged+0x363) [0x63c90d3]+ \\ +     #15 /opt/middleware/jdk160_05/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d5296d]+ \\ +     #16 [0xb4d413aa]+ \\ +     #17 [0xb4d39da7]+ \\ +     #18 [0xb4d37249]+ \\ +     #19 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x637338d]+ \\ +     Locking assertion failure. Backtrace:+ \\ +     #0 /usr/lib/libxcb-xlib.so.0 [0x8c900767]+ \\ +     #1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0x8c90081e]+ \\ +     #2 /usr/lib/libX11.so.6 [0x8bdb2518]+ \\ +     #3 /usr/lib/libX11.so.6(XGetVisualInfo+0x26) [0x8bda90a6]+ \\ +     #4 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c04f319]+ \\ +     #5 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c04f565]+ \\ +     #6 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so [0x8c0503c9]+ \\ +     #7 /opt/middleware/jdk160_05/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0x8c05061f]+ \\ +     #8 [0xb4d413aa]+ \\ +     #9 [0xb4d39f0d]+ \\ +     #10 [0xb4d39f0d]+ \\ +     #11 [0xb4d37249]+ \\ +     #12 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x637338d]+ \\ +     #13 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x64fd168]+ \\ +     #14 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so [0x6373220]+ \\ +     #15 /opt/middleware/jdk160_05/jre/lib/i386/server/libjvm.so(JVM_DoPrivileged+0x363) [0x63c90d3]+ \\ +     #16 /opt/middleware/jdk160_05/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d5296d]+ \\ +     #17 [0xb4d413aa]+ \\ +     #18 [0xb4d39da7]+ \\ +     #19 [0xb4d37249]+ \\ +     Parse time = 258+ \\ +     Incremental Parse time = 99+ \\ +     Incremental Parse time = 7+ \\ +     InsightableOracleDatabase.fetch() time = 49+
Thanks
Josep

Query Hangs while Parsing

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Thanks for the info. The SEQ# is not changing in the v$session_waits. I have found a workaround for this problem. If I delete the statistics for CS_MEASUREMENT table, the query gets executed in .35 secs! If i collect stats again and runs, it hangs.
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TKPROF: Release 10.2.0.3.0 - Production on Fri May 30 11:43:02 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Trace file: css1cldr_ora_10134.trc
Sort options: default
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disk = number of physical reads of buffers from disk
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rows = number of rows processed by the fetch or execute call
select i.obj#,i.ts#,i.file#,i.block#,i.intcols,i.type#,i.flags,i.property,
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i.dblkkey,i.clufac,i.cols,i.analyzetime,i.samplesize,i.dataobj#,
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Execute 3 0.01 0.01 0 0 0 0
Fetch 10 0.00 0.00 0 33 0 7
total 14 0.02 0.02 0 33 0 7
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Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
2 SORT ORDER BY (cr=10 pr=0 pw=0 time=2852 us)
2 HASH JOIN OUTER (cr=10 pr=0 pw=0 time=2741 us)
2 NESTED LOOPS OUTER (cr=7 pr=0 pw=0 time=102 us)
2 TABLE ACCESS CLUSTER IND$ (cr=5 pr=0 pw=0 time=73 us)
1 INDEX UNIQUE SCAN I_OBJ# (cr=2 pr=0 pw=0 time=29 us)(object id 3)
0 TABLE ACCESS BY INDEX ROWID IND_STATS$ (cr=2 pr=0 pw=0 time=22 us)
0 INDEX UNIQUE SCAN I_IND_STATS$_OBJ# (cr=2 pr=0 pw=0 time=18 us)(object id 711)
2 VIEW (cr=3 pr=0 pw=0 time=361 us)
2 SORT GROUP BY (cr=3 pr=0 pw=0 time=356 us)
2 TABLE ACCESS CLUSTER CDEF$ (cr=3 pr=0 pw=0 time=58 us)
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Misses in library cache during execute: 1
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Rows Row Source Operation
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Misses in library cache during execute: 1
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Parsing user id: SYS (recursive depth: 2)
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Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
2 TABLE ACCESS BY INDEX ROWID ICOL$ (cr=6 pr=0 pw=0 time=36 us)
2 INDEX RANGE SCAN I_ICOL1 (cr=4 pr=0 pw=0 time=38 us)(object id 40)
select name,intcol#,segcol#,type#,length,nvl(precision#,0),decode(type#,2,
nvl(scale,-127/*MAXSB1MINAL*/),178,scale,179,scale,180,scale,181,scale,182,
scale,183,scale,231,scale,0),null$,fixedstorage,nvl(deflength,0),default$,
rowid,col#,property, nvl(charsetid,0),nvl(charsetform,0),spare1,spare2,
nvl(spare3,0)
from
col$ where obj#=:1 order by intcol#
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 3 0.00 0.01 0 0 0 0
Fetch 87 0.00 0.00 0 11 0 84
total 91 0.00 0.01 0 11 0 84
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
12 SORT ORDER BY (cr=3 pr=0 pw=0 time=157 us)
12 TABLE ACCESS CLUSTER COL$ (cr=3 pr=0 pw=0 time=79 us)
1 INDEX UNIQUE SCAN I_OBJ# (cr=2 pr=0 pw=0 time=24 us)(object id 3)
select col#, grantee#, privilege#,max(mod(nvl(option$,0),2))
from
objauth$ where obj#=:1 and col# is not null group by privilege#, col#,
grantee# order by col#, grantee#
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 3 0.00 0.00 0 0 0 0
Fetch 3 0.00 0.00 0 6 0 0
total 7 0.00 0.00 0 6 0 0
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
0 SORT GROUP BY (cr=2 pr=0 pw=0 time=57 us)
0 TABLE ACCESS BY INDEX ROWID OBJAUTH$ (cr=2 pr=0 pw=0 time=34 us)
0 INDEX RANGE SCAN I_OBJAUTH1 (cr=2 pr=0 pw=0 time=31 us)(object id 103)
select grantee#,privilege#,nvl(col#,0),max(mod(nvl(option$,0),2))
from
objauth$ where obj#=:1 group by grantee#,privilege#,nvl(col#,0) order by
grantee#
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 3 0.00 0.00 0 0 0 0
Fetch 18 0.00 0.00 0 12 0 15
total 22 0.00 0.00 0 12 0 15
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
5 SORT GROUP BY (cr=4 pr=0 pw=0 time=107 us)
5 TABLE ACCESS BY INDEX ROWID OBJAUTH$ (cr=4 pr=0 pw=0 time=43 us)
5 INDEX RANGE SCAN I_OBJAUTH1 (cr=2 pr=0 pw=0 time=16 us)(object id 103)
select con#,obj#,rcon#,enabled,nvl(defer,0)
from
cdef$ where robj#=:1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 3 0.01 0.00 0 0 0 0
Fetch 3 0.00 0.00 0 3 0 0
total 7 0.01 0.00 0 3 0 0
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
0 TABLE ACCESS BY INDEX ROWID CDEF$ (cr=1 pr=0 pw=0 time=22 us)
0 INDEX RANGE SCAN I_CDEF3 (cr=1 pr=0 pw=0 time=20 us)(object id 52)
select con#,type#,condlength,intcols,robj#,rcon#,match#,refact,nvl(enabled,0),
rowid,cols,nvl(defer,0),mtime,nvl(spare1,0)
from
cdef$ where obj#=:1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 3 0.00 0.00 0 0 0 0
Fetch 34 0.00 0.00 0 42 0 31
total 38 0.00 0.00 0 42 0 31
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
5 TABLE ACCESS CLUSTER CDEF$ (cr=9 pr=0 pw=0 time=17 us)
1 INDEX UNIQUE SCAN I_COBJ# (cr=2 pr=0 pw=0 time=10 us)(object id 30)
select intcol#,nvl(pos#,0),col#,nvl(spare1,0)
from
ccol$ where con#=:1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 31 0.01 0.00 0 0 0 0
Fetch 70 0.00 0.00 0 140 0 39
total 102 0.01 0.00 0 140 0 39
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
2 TABLE ACCESS BY INDEX ROWID CCOL$ (cr=6 pr=0 pw=0 time=49 us)
2 INDEX RANGE SCAN I_CCOL1 (cr=4 pr=0 pw=0 time=45 us)(object id 54)
select condition
from
cdef$ where rowid=:1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.00 0.00 0 2 0 1
total 3 0.00 0.00 0 2 0 1
Misses in library cache during parse: 0
Optimizer mode: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
1 TABLE ACCESS BY USER ROWID CDEF$ (cr=1 pr=0 pw=0 time=18 us)
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 0 0.00 0.00 0 0 0 0
Execute 0 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 0 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 1 0.00 0.00
SQL*Net message from client 1 10.13 10.13
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 11 0.01 0.01 0 0 0 0
Execute 167 0.08 0.07 0 0 0 0
Fetch 361 0.01 0.01 0 655 0 1218
total 539 0.10 0.10 0 655 0 1218
Misses in library cache during parse: 10
Misses in library cache during execute: 10
0 user SQL statements in session.
167 internal SQL statements in session.
167 SQL statements in session.
Trace file: css1cldr_ora_10134.trc
Trace file compatibility: 10.01.00
Sort options: default
1 session in tracefile.
0 user SQL statements in trace file.
167 internal SQL statements in trace file.
167 SQL statements in trace file.
11 unique SQL statements in trace file.
3548 lines in trace file.
0 elapsed seconds in trace file.

Join Query hanging

hi experts,
please help on this, we have migrated database from 10g to 11.2.0.3 , Everything went sccessful but one of the simple join query hanging occasionally in new upgraded database. is there any known issue or anything need to add after migration for sqls?,also before migration its was executed without any issues. that query is joining and fetching from two more tables . is there any generic reason please provide that would be helpful to analyze, Thanks in Advance.

why wasn't this discovered during testing prior to the upgrade?
does new DB have current statistics?
How do I ask a question on the forums?
https://forums.oracle.com/forums/thread.jspa?threadID=2174552#9360002

Query hangs with outer query

Hi,
OS: SPARC 64 bit
Oracle Version: 10.2.0.3.0 64 bit
My query hangs when I include the outer query. When I execute without outer query It comes out in a fraction of second but when I includes outer query it starts hang
Below is my original query which hangs
select * from (select raw_sql_.**, rownum raw_rnum_ from (SELECT /*+ FIRST_ROWS */ NETWORK_ID||'","'||CALLER_NUMBER||'","'||CALLED_NUMBER FROM CDR FROM CDR WHERE 1 = 1
AND day_of_year = 99 AND INTERFACE = 'TRAFIC' AND TIME_STAMP BETWEEN to_date('2009/04/08 00:00:00','yyyy/mm/dd hh24:mi:ss') AND to_date
('2009/04/09 00:00:00','yyyy/mm/dd hh24:mi:ss') AND NETWORK_ID IN (1025,1026) order by id desc) raw_sql_ WHERE rownum <= 10000) WHERE raw_rnum_ > 0;
when I execute this it will come out immediately
select raw_sql_.**, rownum raw_rnum_ from (SELECT /*+ FIRST_ROWS */ NETWORK_ID||'","'||CALLER_NUMBER||'","'||CALLED_NUMBER FROM CDR FROM CDR WHERE 1 = 1
AND day_of_year = 99 AND INTERFACE = 'TRAFIC' AND TIME_STAMP BETWEEN to_date('2009/04/08 00:00:00','yyyy/mm/dd hh24:mi:ss') AND to_date
('2009/04/09 00:00:00','yyyy/mm/dd hh24:mi:ss') AND NETWORK_ID IN (1025,1026) order by id desc) raw_sql_ WHERE rownum <= 10000
select * from (select raw_sql_.**, rownum raw_rnum_ from (SELECT /*+ FIRST_ROWS */ NETWORK_ID||'","'||CALLER_NUMBER||'","'||CALLED_NUMBER FROM CDR FROM CDR WHERE 1 = 1
AND day_of_year = 99 AND INTERFACE = 'TRAFIC' AND TIME_STAMP BETWEEN to_date('2009/04/08 00:00:00','yyyy/mm/dd hh24:mi:ss') AND to_date
('2009/04/09 00:00:00','yyyy/mm/dd hh24:mi:ss') AND NETWORK_ID IN (1025,1026) order by id desc) raw_sql_ WHERE rownum <= 10000) WHERE raw_rnum_ > 0;
but when I includes outer query I hangs it is really very weird for me?
Here is the explain plan for that query
Execution Plan
Plan hash value: 3493649369
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Pstart| Pstop |
| 0 | SELECT STATEMENT | | 1 | 2015 | 1 (0)| 00:00:01 | | |
|* 1 | VIEW | | 1 | 2015 | 1 (0)| 00:00:01 | | |
|* 2 | COUNT STOPKEY | | | | | | | |
| 3 | PARTITION RANGE SINGLE | | 1 | 5894 | 1 (0)| 00:00:01 | 99 | 99 |
| 4 | PARTITION LIST ALL | | 1 | 5894 | 1 (0)| 00:00:01 | 1 | 48 |
|* 5 | TABLE ACCESS BY LOCAL INDEX ROWID| CDR | 1 | 5894 | 1 (0)| 00:00:01 | 4705 | 4752 |
| 6 | BITMAP CONVERSION TO ROWIDS | | | | | | | |
|* 7 | BITMAP INDEX SINGLE VALUE | IX_CDR_INTERFACE | | | | | 4705 | 4752 |
Predicate Information (identified by operation id):
1 - filter("RAW_RNUM_">0)
2 - filter(ROWNUM<=10000)
5 - filter("DAY_OF_YEAR"=99 AND "TIME_STAMP">=TO_DATE('2009-04-08 00:00:00', 'yyyy-mm-dd hh24:mi:ss') AND
"TIME_STAMP"<=TO_DATE('2009-04-09 00:00:00', 'yyyy-mm-dd hh24:mi:ss') AND ("NETWORK_ID"=1025 OR
"NETWORK_ID"=1026))
7 - access("INTERFACE"='TRAFIC')
can one explain why it happen? what could be the reason? Is it a bug or something? what should I do now? Issue is critical in the production enviromentent
Waiting for your Valuable Reply
Thanks In Advance
With Regards
Boo

user454189 wrote:
I suspect the issue with the where clause (raw_rnum_ > 0)
Actually I using bitmap index on ' INTERFACE' column. Does it causing a prob or raw_rnum_ causing a problem?Boo,
a couple of comments:
1. Why do you use the deprecated FIRST_ROWS hint? From 9i on the FIRST_ROWS_n mode should be used instead, and since you're using a top-N query format the hint should be superfluous anyway since the optimizer should switch to FIRST_ROWS_n mode automatically.
2. Why do you use a BITMAP index and not a conventional b*tree index? Let me hazard a guess: Because the INTERFACE column has a small number of distinct values? That would be in most cases a bad idea.
3. What seems to be odd that you're accessing the data via the BITMAP index on INTERFACE, but request an ORDER BY ID DESC. But there is no order by in the execution plan posted. I wonder where the order should come from? Can you show us the DDL of the bitmap index?
4. What does the plan look like if you run only the inner query without the outer query?
You can always gain more information by tracing the statement execution or using the GATHER_PLAN_STATISTICS hint together with the DBMS_XPLAN.DISPLAY_CURSOR function.
Please read this HOW TO: Post a SQL statement tuning request - template posting that explains what you should provide if you have SQL statement tuning question and how to format it here so that the posted information is readable by others.
This accompanying blog post shows step-by-step instructions how to obtain that information.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

How to delete last user session from backend SQL query?

Sometimes user session gets closed between some work by any reason.
When next time that user logs to P6, he gets some error or particular functionaly dosen't work for that user or system hangs.
In that case if i decided to clear last session history of that user from database, how to write SQL query?
I don't want to delete all user sessions from table USESSION and USESSAUD, i simply want to delete last user session of particular user (E.g XYZ).

I am quoting this from MOS Doc Id "Why would multiple session records be present in the User Sessions screen in P6 Web, and why might some of them have different IP addresses? (Doc ID 1600172.1)"
Multiple sessions show up for users since different sections of P6 Web have their own sessions associated with them. If a user is authorized to use multiple areas of the software they will have multiple sessions each time they log in. Additionally, if users are closing their browsers before logging out of P6 Web Access you might see some past sessions still appearing in the list. These will eventually be cleared out by background jobs, however you can also reset the sessions in the software by clicking the "Reset User" link (Administer > User Sessions > Manage User Sessions), or by choosing the "Reset All Users" link (Administer > User Sessions > Manage User Sessions) to do this for all past sessions.
Multiple IP addresses for sessions can happen when a user logs in from different machines. For example, a person may login at their desk, but then go to a colleagues workstation to discuss a project, and log in from there. Doing so will leave them with multiple IP addresses in the session records.
Hope this helps
Regards,
Sachin Gupta

Sql query hangs..

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