Execution script too much time than before
Hi experts,
We run tunning script on daily basis which analyze multiple table of oracle ebs 11i oracle 10g and we also have execute schema statistics,
Issue is this it take too much time to complete some time more than 12 hrs. It looks like hang on gathereing statistics Inv and ont schema.
Kindly give me solution
e.g
analyze table inv.mtl_transaction_types compute statistics;
analyze table wip.wip_schedule_groups compute statistics;
analyze table WSH.WSH_DELIVERY_DETAILS compute statistics;
exec DBMS_STATS.GATHER_SCHEMA_STATS('APPS'); ---APPS, APPLSYS, INV,ONT,WSH, SYS, SYSTEM, GL,HR,AR,AP,CE,WIP,
---PO,MSC,PJI
exec DBMS_STATS.GATHER_SCHEMA_STATS('APPLSYS');
exec DBMS_STATS.GATHER_SCHEMA_STATS('INV');
exec DBMS_STATS.GATHER_SCHEMA_STATS('ONT');
exec DBMS_STATS.GATHER_SCHEMA_STATS('WSH');
Now its taking more than 15 minut and not yet complete.
Thanks
but to gather statisics for some schema it takes too much time. First it take 3 hrs for whole script now it is taking more than 15 hrs and some scheam go to
complete and some are still hang then we have to cancel this job.
I also experiment to execute one by one schema at that time it is completed normally.Have you done any changes recently (i.e. upgrade, installed new patches, data load ..etc)?
Have you tried to use different parameters? -- Definition of Parameters Used in Gather Schema Statistics Program [ID 556466.1]
You could enable trace and generate the TKPROF file to find out why it takes that long to gather schema statistics.
FAQ: Common Tracing Techniques within the Oracle Applications 11i/R12 [ID 296559.1]
Enabling Concurrent Program Traces [ID 123222.1]
How To Get Level 12 Trace And FND Debug File For Concurrent Programs [ID 726039.1]
I would also suggest you log a SR as "Gather Schema Statistics" is a seeded concurrent program and Oracle Support should be able to help.
Thanks,
Hussein
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Solution
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select w~mandt
wvbeln wposnr wmeins wmatnr wwerks wnetwr
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wposar wprodh wgrkor wantlf wkztlf wlprio
wvstel wroute wumvkz wumvkn wabgru wuntto
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xetenr xwmeng xbmeng xettyp xwepos xabart
x~edatu
xtddat xmbdat xlddat xwadat xabruf xetart
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into table t_vbap
from vbap as w
inner join vbep as x on xvbeln = wvbeln and
xposnr = wposnr and
xmandt = wmandt
where
( ( werdat > pre_dat ) and ( werdat <= w_date ) ) and
( ( ( erdat > pre_dat and erdat < p_syndt ) or
( erdat = p_syndt and erzet <= p_syntm ) ) ) and
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w~pstyv in s_itmcat and
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x~plart in s_pln_tp and
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( ( xlifsp in s_lifsp ) or ( xlifsp = ' ' ) ).
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Could anybody change this statement and help me out to reduce the DB Access time?
ThxWays of Performance Tuning
1. Selection Criteria
2. Select Statements
Select Queries
SQL Interface
Aggregate Functions
For all Entries
Select Over more than one internal table
Selection Criteria
1. Restrict the data to the selection criteria itself, rather than filtering it out using the ABAP code using CHECK statement.
2. Select with selection list.
SELECT * FROM SBOOK INTO SBOOK_WA.
CHECK: SBOOK_WA-CARRID = 'LH' AND
SBOOK_WA-CONNID = '0400'.
ENDSELECT.
The above code can be much more optimized by the code written below which avoids CHECK, selects with selection list
SELECT CARRID CONNID FLDATE BOOKID FROM SBOOK INTO TABLE T_SBOOK
WHERE SBOOK_WA-CARRID = 'LH' AND
SBOOK_WA-CONNID = '0400'.
Select Statements Select Queries
1. Avoid nested selects
SELECT * FROM EKKO INTO EKKO_WA.
SELECT * FROM EKAN INTO EKAN_WA
WHERE EBELN = EKKO_WA-EBELN.
ENDSELECT.
ENDSELECT.
The above code can be much more optimized by the code written below.
SELECT PF1 PF2 FF3 FF4 INTO TABLE ITAB
FROM EKKO AS P INNER JOIN EKAN AS F
ON PEBELN = FEBELN.
Note: A simple SELECT loop is a single database access whose result is passed to the ABAP program line by line. Nested SELECT loops mean that the number of accesses in the inner loop is multiplied by the number of accesses in the outer loop. One should therefore use nested SELECT loops only if the selection in the outer loop contains very few lines or the outer loop is a SELECT SINGLE statement.
2. Select all the records in a single shot using into table clause of select statement rather than to use Append statements.
SELECT * FROM SBOOK INTO SBOOK_WA.
CHECK: SBOOK_WA-CARRID = 'LH' AND
SBOOK_WA-CONNID = '0400'.
ENDSELECT.
The above code can be much more optimized by the code written below which avoids CHECK, selects with selection list and puts the data in one shot using into table
SELECT CARRID CONNID FLDATE BOOKID FROM SBOOK INTO TABLE T_SBOOK
WHERE SBOOK_WA-CARRID = 'LH' AND
SBOOK_WA-CONNID = '0400'.
3. When a base table has multiple indices, the where clause should be in the order of the index, either a primary or a secondary index.
To choose an index, the optimizer checks the field names specified in the where clause and then uses an index that has the same order of the fields. In certain scenarios, it is advisable to check whether a new index can speed up the performance of a program. This will come handy in programs that access data from the finance tables.
4. For testing existence, use Select.. Up to 1 rows statement instead of a Select-Endselect-loop with an Exit.
SELECT * FROM SBOOK INTO SBOOK_WA
UP TO 1 ROWS
WHERE CARRID = 'LH'.
ENDSELECT.
The above code is more optimized as compared to the code mentioned below for testing existence of a record.
SELECT * FROM SBOOK INTO SBOOK_WA
WHERE CARRID = 'LH'.
EXIT.
ENDSELECT.
5. Use Select Single if all primary key fields are supplied in the Where condition .
If all primary key fields are supplied in the Where conditions you can even use Select Single.
Select Single requires one communication with the database system, whereas Select-Endselect needs two.
Select Statements SQL Interface
1. Use column updates instead of single-row updates
to update your database tables.
SELECT * FROM SFLIGHT INTO SFLIGHT_WA.
SFLIGHT_WA-SEATSOCC =
SFLIGHT_WA-SEATSOCC - 1.
UPDATE SFLIGHT FROM SFLIGHT_WA.
ENDSELECT.
The above mentioned code can be more optimized by using the following code
UPDATE SFLIGHT
SET SEATSOCC = SEATSOCC - 1.
2. For all frequently used Select statements, try to use an index.
SELECT * FROM SBOOK CLIENT SPECIFIED INTO SBOOK_WA
WHERE CARRID = 'LH'
AND CONNID = '0400'.
ENDSELECT.
The above mentioned code can be more optimized by using the following code
SELECT * FROM SBOOK CLIENT SPECIFIED INTO SBOOK_WA
WHERE MANDT IN ( SELECT MANDT FROM T000 )
AND CARRID = 'LH'
AND CONNID = '0400'.
ENDSELECT.
3. Using buffered tables improves the performance considerably.
Bypassing the buffer increases the network considerably
SELECT SINGLE * FROM T100 INTO T100_WA
BYPASSING BUFFER
WHERE SPRSL = 'D'
AND ARBGB = '00'
AND MSGNR = '999'.
The above mentioned code can be more optimized by using the following code
SELECT SINGLE * FROM T100 INTO T100_WA
WHERE SPRSL = 'D'
AND ARBGB = '00'
AND MSGNR = '999'.
Select Statements Aggregate Functions
If you want to find the maximum, minimum, sum and average value or the count of a database column, use a select list with aggregate functions instead of computing the aggregates yourself.
Some of the Aggregate functions allowed in SAP are MAX, MIN, AVG, SUM, COUNT, COUNT( * )
Consider the following extract.
Maxno = 0.
Select * from zflight where airln = LF and cntry = IN.
Check zflight-fligh > maxno.
Maxno = zflight-fligh.
Endselect.
The above mentioned code can be much more optimized by using the following code.
Select max( fligh ) from zflight into maxno where airln = LF and cntry = IN.
Select Statements For All Entries
The for all entries creates a where clause, where all the entries in the driver table are combined with OR. If the number of entries in the driver table is larger than rsdb/max_blocking_factor, several similar SQL statements are executed to limit the length of the WHERE clause.
The plus
Large amount of data
Mixing processing and reading of data
Fast internal reprocessing of data
Fast
The Minus
Difficult to program/understand
Memory could be critical (use FREE or PACKAGE size)
Points to be must considered FOR ALL ENTRIES
Check that data is present in the driver table
Sorting the driver table
Removing duplicates from the driver table
Consider the following piece of extract
Loop at int_cntry.
Select single * from zfligh into int_fligh
where cntry = int_cntry-cntry.
Append int_fligh.
Endloop.
The above mentioned can be more optimized by using the following code.
Sort int_cntry by cntry.
Delete adjacent duplicates from int_cntry.
If NOT int_cntry[] is INITIAL.
Select * from zfligh appending table int_fligh
For all entries in int_cntry
Where cntry = int_cntry-cntry.
Endif.
Select Statements Select Over more than one Internal table
1. Its better to use a views instead of nested Select statements.
SELECT * FROM DD01L INTO DD01L_WA
WHERE DOMNAME LIKE 'CHAR%'
AND AS4LOCAL = 'A'.
SELECT SINGLE * FROM DD01T INTO DD01T_WA
WHERE DOMNAME = DD01L_WA-DOMNAME
AND AS4LOCAL = 'A'
AND AS4VERS = DD01L_WA-AS4VERS
AND DDLANGUAGE = SY-LANGU.
ENDSELECT.
The above code can be more optimized by extracting all the data from view DD01V_WA
SELECT * FROM DD01V INTO DD01V_WA
WHERE DOMNAME LIKE 'CHAR%'
AND DDLANGUAGE = SY-LANGU.
ENDSELECT
2. To read data from several logically connected tables use a join instead of nested Select statements. Joins are preferred only if all the primary key are available in WHERE clause for the tables that are joined. If the primary keys are not provided in join the Joining of tables itself takes time.
SELECT * FROM EKKO INTO EKKO_WA.
SELECT * FROM EKAN INTO EKAN_WA
WHERE EBELN = EKKO_WA-EBELN.
ENDSELECT.
ENDSELECT.
The above code can be much more optimized by the code written below.
SELECT PF1 PF2 FF3 FF4 INTO TABLE ITAB
FROM EKKO AS P INNER JOIN EKAN AS F
ON PEBELN = FEBELN.
3. Instead of using nested Select loops it is often better to use subqueries.
SELECT * FROM SPFLI
INTO TABLE T_SPFLI
WHERE CITYFROM = 'FRANKFURT'
AND CITYTO = 'NEW YORK'.
SELECT * FROM SFLIGHT AS F
INTO SFLIGHT_WA
FOR ALL ENTRIES IN T_SPFLI
WHERE SEATSOCC < F~SEATSMAX
AND CARRID = T_SPFLI-CARRID
AND CONNID = T_SPFLI-CONNID
AND FLDATE BETWEEN '19990101' AND '19990331'.
ENDSELECT.
The above mentioned code can be even more optimized by using subqueries instead of for all entries.
SELECT * FROM SFLIGHT AS F INTO SFLIGHT_WA
WHERE SEATSOCC < F~SEATSMAX
AND EXISTS ( SELECT * FROM SPFLI
WHERE CARRID = F~CARRID
AND CONNID = F~CONNID
AND CITYFROM = 'FRANKFURT'
AND CITYTO = 'NEW YORK' )
AND FLDATE BETWEEN '19990101' AND '19990331'.
ENDSELECT.
1. Table operations should be done using explicit work areas rather than via header lines.
READ TABLE ITAB INTO WA WITH KEY K = 'X BINARY SEARCH.
IS MUCH FASTER THAN USING
READ TABLE ITAB INTO WA WITH KEY K = 'X'.
If TAB has n entries, linear search runs in O( n ) time, whereas binary search takes only O( log2( n ) ).
2. Always try to use binary search instead of linear search. But dont forget to sort your internal table before that.
READ TABLE ITAB INTO WA WITH KEY K = 'X'. IS FASTER THAN USING
READ TABLE ITAB INTO WA WITH KEY (NAME) = 'X'.
3. A dynamic key access is slower than a static one, since the key specification must be evaluated at runtime.
4. A binary search using secondary index takes considerably less time.
5. LOOP ... WHERE is faster than LOOP/CHECK because LOOP ... WHERE evaluates the specified condition internally.
LOOP AT ITAB INTO WA WHERE K = 'X'.
ENDLOOP.
The above code is much faster than using
LOOP AT ITAB INTO WA.
CHECK WA-K = 'X'.
ENDLOOP.
6. Modifying selected components using MODIFY itab TRANSPORTING f1 f2.. accelerates the task of updating a line of an internal table.
WA-DATE = SY-DATUM.
MODIFY ITAB FROM WA INDEX 1 TRANSPORTING DATE.
The above code is more optimized as compared to
WA-DATE = SY-DATUM.
MODIFY ITAB FROM WA INDEX 1.
7. Accessing the table entries directly in a "LOOP ... ASSIGNING ..." accelerates the task of updating a set of lines of an internal table considerably
Modifying selected components only makes the program faster as compared to Modifying all lines completely.
e.g,
LOOP AT ITAB ASSIGNING <WA>.
I = SY-TABIX MOD 2.
IF I = 0.
<WA>-FLAG = 'X'.
ENDIF.
ENDLOOP.
The above code works faster as compared to
LOOP AT ITAB INTO WA.
I = SY-TABIX MOD 2.
IF I = 0.
WA-FLAG = 'X'.
MODIFY ITAB FROM WA.
ENDIF.
ENDLOOP.
8. If collect semantics is required, it is always better to use to COLLECT rather than READ BINARY and then ADD.
LOOP AT ITAB1 INTO WA1.
READ TABLE ITAB2 INTO WA2 WITH KEY K = WA1-K BINARY SEARCH.
IF SY-SUBRC = 0.
ADD: WA1-VAL1 TO WA2-VAL1,
WA1-VAL2 TO WA2-VAL2.
MODIFY ITAB2 FROM WA2 INDEX SY-TABIX TRANSPORTING VAL1 VAL2.
ELSE.
INSERT WA1 INTO ITAB2 INDEX SY-TABIX.
ENDIF.
ENDLOOP.
The above code uses BINARY SEARCH for collect semantics. READ BINARY runs in O( log2(n) ) time. The above piece of code can be more optimized by
LOOP AT ITAB1 INTO WA.
COLLECT WA INTO ITAB2.
ENDLOOP.
SORT ITAB2 BY K.
COLLECT, however, uses a hash algorithm and is therefore independent
of the number of entries (i.e. O(1)) .
9. "APPEND LINES OF itab1 TO itab2" accelerates the task of appending a table to another table considerably as compared to LOOP-APPEND-ENDLOOP.
APPEND LINES OF ITAB1 TO ITAB2.
This is more optimized as compared to
LOOP AT ITAB1 INTO WA.
APPEND WA TO ITAB2.
ENDLOOP.
10. DELETE ADJACENT DUPLICATES accelerates the task of deleting duplicate entries considerably as compared to READ-LOOP-DELETE-ENDLOOP.
DELETE ADJACENT DUPLICATES FROM ITAB COMPARING K.
This is much more optimized as compared to
READ TABLE ITAB INDEX 1 INTO PREV_LINE.
LOOP AT ITAB FROM 2 INTO WA.
IF WA = PREV_LINE.
DELETE ITAB.
ELSE.
PREV_LINE = WA.
ENDIF.
ENDLOOP.
11. "DELETE itab FROM ... TO ..." accelerates the task of deleting a sequence of lines considerably as compared to DO -DELETE-ENDDO.
DELETE ITAB FROM 450 TO 550.
This is much more optimized as compared to
DO 101 TIMES.
DELETE ITAB INDEX 450.
ENDDO.
12. Copying internal tables by using ITAB2[ ] = ITAB1[ ] as compared to LOOP-APPEND-ENDLOOP.
ITAB2[] = ITAB1[].
This is much more optimized as compared to
REFRESH ITAB2.
LOOP AT ITAB1 INTO WA.
APPEND WA TO ITAB2.
ENDLOOP.
13. Specify the sort key as restrictively as possible to run the program faster.
SORT ITAB BY K. makes the program runs faster as compared to SORT ITAB.
Internal Tables contd
Hashed and Sorted tables
1. For single read access hashed tables are more optimized as compared to sorted tables.
2. For partial sequential access sorted tables are more optimized as compared to hashed tables
Hashed And Sorted Tables
Point # 1
Consider the following example where HTAB is a hashed table and STAB is a sorted table
DO 250 TIMES.
N = 4 * SY-INDEX.
READ TABLE HTAB INTO WA WITH TABLE KEY K = N.
IF SY-SUBRC = 0.
ENDIF.
ENDDO.
This runs faster for single read access as compared to the following same code for sorted table
DO 250 TIMES.
N = 4 * SY-INDEX.
READ TABLE STAB INTO WA WITH TABLE KEY K = N.
IF SY-SUBRC = 0.
ENDIF.
ENDDO.
Point # 2
Similarly for Partial Sequential access the STAB runs faster as compared to HTAB
LOOP AT STAB INTO WA WHERE K = SUBKEY.
ENDLOOP.
This runs faster as compared to
LOOP AT HTAB INTO WA WHERE K = SUBKEY.
ENDLOOP. -
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You can gather the execution plan so you can see where the most heavy part of th query is. This way a better tuning approach and a more accurate diagnostic can be issued.
~ Madrid. -
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Tags edited by: Michael ApplebyHi fiontan,
Thanks a lot for the response!!!
Yeah!! I kow it's a lotta code, but i thought it'd be more informative if the whole function was quoted.
I'm in fact using the PrintWriter to wrap the BufferedWriter but am not using the print() method.
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XDItem item = (XDItem)allitems.nextElement();
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if(value == null || value.equalsIgnoreCase("null"))
value = "";
if(i == 0)
aRow = value;
else
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I am creating an index on clob data column .... it s getting too much time any way to enhance that..
Giving script as below :
CREATE INDEX myindex ON sgvd_doc_ver(DOC_FILE) INDEXTYPE IS CTXSYS.CONTEXT parameters ('sync (every "sysdate+(1/24/60)")');Dom Brooks wrote:
Notably see also "FAQ about Indexing Performance":
http://download.oracle.com/docs/cd/E11882_01/text.112/e16594/aoptim.htm#i1006756
Spot on with the choice of link.
Very large memory also means fewer entries per word, which can make queries more efficient. (Oracle calls this "fragmentation" but only mentions it with respect to updating the context index.
Another detail that helps is to add as many words to the stop-list as possible before you create the index.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
A general reminder about "Forum Etiquette / Reward Points": http://forums.oracle.com/forums/ann.jspa?annID=718
If you never mark your questions as answered people will eventually decide that it's not worth trying to answer you because they will never know whether or not their answer has been of any use, or whether you even bothered to read it.
It is also important to mark answers that you thought helpful - again it lets other people know that you appreciate their help, but it also acts as a pointer for other people when they are researching the same question, moreover it means that when you mark a bad or wrong answer as helpful someone may be prompted to tell you (and the rest of the forum) what's so bad or wrong about the answer you found helpful. -
Taking too much time to load application
Hi,
I have deployed a j2ee application on oracle 10g version 10.1.2.0.2. But the application is taking too much time to load. After loading ,everything works fast.
I have another 10g server (same version) in which the same application is loading very fast.
When I checked the apache error logs found this :-
[Thu Apr 26 09:17:31 2007] [warn] [client 10.1.20.9] oc4j_socket_recvfull timed out
[Thu Apr 26 09:17:31 2007] [error] [client 10.1.20.9] [ecid: 89128867058,1] (4)Interrupted system call: MOD_OC4J_0038: Receiving data from oc4j exceeded the configured "Timeout" value and the error code is 4.
[Thu Apr 26 09:17:31 2007] [error] [client 10.1.20.9] [ecid: 89128867058,1] MOD_OC4J_0054: Failed to call network routine to receive an ajp13 message from oc4j.
[Thu Apr 26 09:17:31 2007] [error] [client 10.1.20.9] [ecid: 89128867058,1] MOD_OC4J_0033: Failed to receive an ajp13 message from oc4j.
[Thu Apr 26 09:17:31 2007] [warn] [client 10.1.20.9] [ecid: 89128867058,1] MOD_OC4J_0078: Network connection errors happened to host: lawdb.keralalawsect.org and port: 12501 while receiving the first response from oc4j. This request is recoverable.
[Thu Apr 26 09:17:31 2007] [error] [client 10.1.20.9] [ecid: 89128867058,1] MOD_OC4J_0121: Failed to service request with network worker: home_15 and it is not recoverable.
[Thu Apr 26 09:17:31 2007] [error] [client 10.1.20.9] [ecid: 89128867058,1] MOD_OC4J_0013: Failed to call destination: home's service() to service the request.
[Thu Apr 26 11:36:36 2007] [notice] FastCGI: process manager initialized (pid 21177)
[Thu Apr 26 11:36:37 2007] [notice] Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server configured -- resuming normal operations
[Thu Apr 26 11:36:37 2007] [notice] Accept mutex: fcntl (Default: sysvsem)
[Thu Apr 26 11:36:37 2007] [warn] long lost child came home! (pid 9124)
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0015: recv() returns 0. There has no message available to be received and oc4j has gracefully (orderly) closed the connection.
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0054: Failed to call network routine to receive an ajp13 message from oc4j.
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0033: Failed to receive an ajp13 message from oc4j.
[Thu Apr 26 11:39:51 2007] [warn] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0078: Network connection errors happened to host: lawdb.keralalawsect.org and port: 12501 while receiving the first response from oc4j. This request is recoverable.
[Thu Apr 26 11:39:51 2007] [warn] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0184: Failed to find an oc4j process for destination: home
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0145: There is no oc4j process (for destination: home) available to service request.
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0119: Failed to get an oc4j process for destination: home
[Thu Apr 26 11:39:51 2007] [error] [client 10.1.20.9] [ecid: 80547835731,1] MOD_OC4J_0013: Failed to call destination: home's service() to service the request.
[Thu Apr 26 11:46:33 2007] [notice] FastCGI: process manager initialized (pid 21726)
[Thu Apr 26 11:46:34 2007] [notice] Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server configured -- resuming normal operations
[Thu Apr 26 11:46:34 2007] [notice] Accept mutex: fcntl (Default: sysvsem)
[Thu Apr 26 11:46:34 2007] [warn] long lost child came home! (pid 21182)
[Thu Apr 26 11:53:32 2007] [warn] [client 10.1.20.9] oc4j_socket_recvfull timed out
[Thu Apr 26 11:53:32 2007] [error] [client 10.1.20.9] [ecid: 89138452752,1] (4)Interrupted system call: MOD_OC4J_0038: Receiving data from oc4j exceeded the configured "Timeout" value and the error code is 4.
[Thu Apr 26 11:53:32 2007] [error] [client 10.1.20.9] [ecid: 89138452752,1] MOD_OC4J_0054: Failed to call network routine to receive an ajp13 message from oc4j.
[Thu Apr 26 11:53:32 2007] [error] [client 10.1.20.9] [ecid: 89138452752,1] MOD_OC4J_0033: Failed to receive an ajp13 message from oc4j.
[Thu Apr 26 11:53:32 2007] [warn] [client 10.1.20.9] [ecid: 89138452752,1] MOD_OC4J_0078: Network connection errors happened to host: lawdb.keralalawsect.org and port: 12501 while receiving the first response from oc4j. This request is recoverable.
[Thu Apr 26 11:53:32 2007] [error] [client 10.1.20.9] [ecid: 89138452752,1] MOD_OC4J_0121: Failed to service request with network worker: home_15 and it is not recoverable.
[Thu Apr 26 11:53:32 2007] [error] [client 10.1.20.9] [ecid: 89138452752,1] MOD_OC4J_0013: Failed to call destination: home's service() to service the request.
Please HELP ME...Hi this is what the solution given by your link
A.1.6 Connection Timeouts Through a Stateful Firewall Affect System Performance
Problem
To improve performance the mod_oc4j component in each Oracle HTTP Server process maintains open TCP connections to the AJP port within each OC4J instance it sends requests to.
In situations where a firewall exists between OHS and OC4J, packages sent via AJP are rejected if the connections can be idle for periods in excess of the inactivity timeout of stateful firewalls.
However, the AJP socket is not closed; as long as the socket remains open, the worker thread is tied to it and is never returned to the thread pool. OC4J will continue to create more threads, and will eventually exhaust system resources.
Solution
The OHS TCP connection must be kept "alive" to avoid firewall timeout issues. This can be accomplished using a combination of OC4J configuration parameters and Apache runtime properties.
Set the following parameters in the httpd.conf or mod_oc4j.conf configuration files. Note that the value of Oc4jConnTimeout sets the length of inactivity, in seconds, before the session is considered inactive.
Oc4jUserKeepalive on
Oc4jConnTimeout 12000 (or a similar value)
Also set the following AJP property at OC4J startup to enable OC4J to close AJP sockets in the event that a connection between OHS and OC4J is dropped due to a firewall timeout:
ajp.keepalive=true
For example:
java -Dajp.keepalive=true -jar oc4j.jar
Please tell me where or which file i should put the option
java -Dajp.keepalive=true -jar oc4j.jar ??????/ -
Taking too much time incollecting in business content activation
Hi all,
I am collecting business content object for activation. I have selected 0fiAA_cha object,while cllecting in the activation but it is taking too much time and then it asks for source
system authorisation and then throws error maximum run time exceded. i have selected data flow before there.
What can be the reason for it.
Please help..Hi ,
You should also always try and have the latest BI content patch installed but I don't think this is the problem. It seems that there
are alot of objects to collect. Under 'grouping' you can select the option 'only necessary objects', please check if you can
use this option to install the objects that you need from content.
Best Regards,
Des.
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