Oracle Pool Refresh
Hi All,
These are the setting for our Oracle Pool,
weblogic.jdbc.connectionPool.oraclePool=\
url=jdbc:oracle:thin:@10.112.99.202:1521:ORCL,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=0,\
initialCapacity=200,\
maxCapacity=250,\
capacityIncrement=10,\
allowShrinking=true,\
shrinkPeriodMins=15,\
refreshMinutes=10,\
testTable=PROFF_LIABIL,\
props=user=abcde;password=xyz;
But it's not refreshing periodically. Please help me to refresh the Oracle Pool periodically.It's very urgent to me.
Thanks,
Venkat
Your question was answered in the JDBC section.
Cameron Purdy
[email protected]
http://www.tangosol.com
WebLogic Consulting Available
"Venkat Ponnala" <[email protected]> wrote in message
news:39d1f6e2$[email protected]..
>
> Hi All,
>
> These are the setting for our Oracle Pool,
>
> weblogic.jdbc.connectionPool.oraclePool=\
> url=jdbc:oracle:thin:@10.112.99.202:1521:ORCL,\
> driver=oracle.jdbc.driver.OracleDriver,\
> loginDelaySecs=0,\
> initialCapacity=200,\
> maxCapacity=250,\
> capacityIncrement=10,\
> allowShrinking=true,\
> shrinkPeriodMins=15,\
> refreshMinutes=10,\
> testTable=PROFF_LIABIL,\
> props=user=abcde;password=xyz;
> But it's not refreshing periodically. Please help me to refresh the Oracle
Pool periodically.It's very urgent to me.
>
> Thanks,
> Venkat
Similar Messages
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How to track the connection pool refresh details
Hi,
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"Hello,
From reading of these newsgroups I've seen many different manifestations
of what seems to be the same root cause with connection pools and
connections which are refreshed/replaced when found broken. In our
case weblogic server hangs.
Kit: 2xWeblogic 5.1.0 sp11 (not clusterd), Solaris 8,
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We do indeed have a firewall employed to run our subnets, and hence
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allowed to communicate to each other via rules set up on the firewall and
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As far as the db is concerned, lookups (no writes) never take more than a few
hundred milliseconds and are then closed and given back to the connection pool
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weblogic.jdbc.connectionPool.RecipeDBPool=\
url=jdbc:oracle:thin:@foo:1521:BAA,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=1,\
initialCapacity=30,\
maxCapacity=50,\
capacityIncrement=1,\Alkesh wrote:
Hi Joe,
The fix you suggested has been implemented and has been running fine
now for the past 3 days. I'm delighted with the result,Great. Glad to help.
but am concerned as to why this problem wasnt highlighted during our
load-testing phases...It's a possibility that your load-testing didn't present the same sort
of load that your actual runtime does.
Thanks for your time on this.Well sure. We want you successful.
Joe
Alkesh
At 01:52 PM 2/22/2002 +0000, you wrote:
Hi Joe,
Thanks for your reply
Please find attached a copy of the jvm thread dump we got from thelast time
that weblogic blocked upon trying to refresh a broken connection.
We have turned off JIT with the environment settingJAVA_COMPILER=NONE.
FYI hotspot is enabled with '-hotspot', these settings can be foundin the
attached 'startWeblogic.sh'.Hi. I found a serious problem by reading the thread dump:
"ExecuteThread-11" daemon prio=5 tid=0x179d40 nid=0x19 waiting for
monitor entry
[0xeee80000..0xeee819e0]
at java.sql.DriverManager.getConnection(DriverManager.java:144)
- waiting to lock <f8e77ad0> (a java.lang.Class)
at com.akqa.sainsburys.jv_recipe.ejb.session.RecipeBean.getConnection(Re
cipeBean.java:759)
It is important to never call DriverManager methods in a multithreaded
application
such as Weblogic, because these JVM methods are alloverly synchronized
at
the class level. One such method, DriverManager.println(), is called
continuously
by all JDBC drivers as well as the SQLException constructor. If one
server thread
makes a long-lasting or hanging call to DriverManager.getConnection(),
it can halt
all JDBC in the whole JVM including work on other open driver
connections.
Please show me the code for RecipeBean.java, and I will send you an
altered version
that should solve this problem. In fact, I can infer from the thread
dump what is needed.
Change the one method getConnection() to this:
// Make once and re-use a driver instance directly, avoiding
DriverManager
Driver d = (Driver)class.forName("weblogic.jdbc.jts.Driver").newInstance();
public Connection getConnection()
return d.connect("jdbc:weblogic:jts:yourPoolNameHere", null );
Also, change your pool definition. I assume you have
testConnsOnReserve set to true.
(You should). Also, you should change your refresh minutes to
something huge, like
9999999. The refresh is interfering with your online performance and
is unnecessary
if you have testConnsOnReserve set. I recommend:
weblogic.jdbc.connectionPool.RecipeDBPool=\
url=jdbc:oracle:thin:@foo:1521:BAA,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=1,\
initialCapacity=50,\ <------ note that this should be the
same as max, so all cons are made at startup
maxCapacity=50,\
testTable=dual,\
testConnsOnReserve=true,\
refreshTestMinutes=9999999,\
etc.
Joe
I've also attached some firewall logs around the time of weblogicblocking
(12.09). I could only get screen dumps for you, this may or maynot be
useful.
For the firewall logs use the following legend :-
195.110.64.205 - DNS
172.16.160.195 - host webserver 1 (i.e. what our licenses are boundto)
172.16.160.196 - host webserver 2
172.16.160.220 - website 1
172.16.160.230 - website 2
Thanks
Alkesh
-----Original Message-----
From: Joe [mailto:[email protected]]
Sent: 20 February 2002 22:09
To: [email protected]
Subject: Re: 5.1.0 sp11 Connection pool refresh issue,
revisited....again...!!!
At 02:47 PM 2/20/2002 +0000, you wrote:
Hi Joe,
Please find attached a copy of our thread dumps for the most recentoccasion
that weblogic server has stopped.
Apologies for any misunderstandings with my previous post, it appears to
have been cropped. Full posting below (yes we do have testConnOnReserve and
testTable properties set).
Thanks for your time.sure, but first let's get you running OK. These dumps seem to be
very cryptic, as if you're running a highly optimized JVM that
loses almost all of the Java class references I'd normally see.
Can you run again with a more basic JVM? I am beginning to suspect
the JIT JVM...
Joe
Alkesh
Joseph Weinstein wrote:
Hello,
From reading of these newsgroups I've seen many
different manifestations of what seems to be the sameroot cause with connection pools and connections
which are refreshed/replaced when found broken. In our
case weblogic server hangs.
Kit: Weblogic 5.1.0 sp11 (not clusterd),
Solaris 8, java 1.3.1_01, oracle 8.1.6,
latest JDBC 2.0 drivers from oracle.
We do indeed have a firewall employed to run our subnets,
and hence our weblogic servers and oracle databses are
in different DMZ's, but are allowed to communicate to each
other via rules set up on the firewall and inspection of
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As far as the db is concerned, lookups (no writes) never
take more than a few hundred milliseconds and are then
closed and given back to the connection pool immediately
from within the 'finally' block of code, hence hard to
see when,if ever, the db is is closing them due to excessive idle time.
weblogic.jdbc.connectionPool.RecipeDBPool=\
url=jdbc:oracle:thin:@foo:1521:BAA,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=1,\
initialCapacity=30,\
maxCapacity=50,\
capacityIncrement=1,\
allowShrinking=false,\
testTable=dual,\
testConnsOnReserve=true,\
shrinkPeriodMins=1,\
refreshTestMinutes=10,\ // has been 1 and 5 but 10 'more' stable.
Fequently however, connections are found to be broken
(either by periodical refresh - refreshTestMinutes or
testing connection before granting it to the
application - testConnsOnReserve=true), this has been
confirmed by viewing JDBC.log .
When this is so, weblogic attempts to replace these
broken connections with new ones and then proceeds
to grant it to the application. Once in a while however
(and by no means 'x' refreshes later), weblogic will not
come back.
One of 2 errors occur in our deployment which cuase weblogic
to refresh a connection.
<JDBC Pool RecipeDBPool> java.sql.SQLException: No more data to read fromsocket
and
<JDBC Pool RecipeDBPool> java.sql.SQLException: Io exception: Broken pipe
I believe these settings to all be correct, JDBC drivers
in the correct point BEFORE weblogic.aux in classpath, yet
still have the issue of broken connections.
Any ideas ? I've been reading a lot into this probelm
on various postings now, and i'm completely stumped.
Thanks for your time.
Alkesh -
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i test the oracle pool on WLS 7.0 by using the "simpleexample.jsp" offered by BEA.
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Hongjiehongjie wrote:
Joe:
sorry for the misspelling. you are right, the name is
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It WORKS after I changed the code as you suugested.
Thank you very much.Sure.
>
>
But I have to make it work for connectionPool. because we use
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>
>
Hongjie
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hongjie wrote:
i test the oracle pool on WLS 7.0 by using the "simpleexample.jsp"offered by BEA.
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("oracle.jdbc.driver.OracleDriver").newInstance();
i included the classes12.zip in my classpath.I suspect you mean the example server\src\examples\jdbc\pool\simpleselect.jsp
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Driver myDriver = (Driver) Class.forName("weblogic.jdbc.pool.Driver").newInstance();
conn = myDriver.connect("jdbc:weblogic:pool:demoPool", null);
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Driver myDriver = (Driver) Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
java.util.Properties p = new java.util.Properties();
p.put("user", "scott");
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Joe Weinstein at BEA
the oracle pool setup is as follwoing:
name: oraclePool
URL: jdbc:oracle:thin:@myservername:1521:sid
Driver: oracle.jdbc.driver.OracleDriver
Thanks in advance.
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<< unformatable code removed >>
Moderator message - Please go through your code and post only what is relevant to your question.
Edited by: Rob Burbank on Apr 28, 2009 1:44 PMMODULE USER_COMMAND_9999 INPUT .
CASE OK_CODE .
WHEN 'NEXT' .
PERFORM Next .
PERFORM GetGridData .
PERFORM RefreshALV .
WHEN 'PREV' .
PERFORM Prev .
PERFORM GetGridData .
PERFORM RefreshALV .
WHEN 'EXIT' .
SET SCREEN 0 .
WHEN 'PRNT' .
PERFORM Print .
WHEN 'PRNA' .
PERFORM PrintAll .
WHEN 'BACK' .
PERFORM HideInitials .
SET SCREEN '1000' .
WHEN 'CANC' .
SET SCREEN '1000' .
WHEN 'FRST' .
PERFORM First .
PERFORM GetGridData .
PERFORM RefreshALV .
WHEN 'LAST' .
PERFORM Last .
PERFORM GetGridData .
PERFORM RefreshALV .
WHEN 'CFAX' .
PERFORM Show6000 .
ENDCASE .
ENDMODULE .
FORM PrintAll .
DATA sPromptB TYPE STRING .
DATA sPromptM TYPE STRING .
DATA sPromptE TYPE STRING .
DATA sPromptF TYPE STRING .
DATA cAnswer TYPE C LENGTH 1 .
IF NOT oLTend->isEmpty( ) = 1 .
sPromptB = text-995 .
sPromptM = ITOTSHIPNUM .
sPromptE = text-994 .
CONCATENATE sPromptB sPromptM sPromptE INTO sPromptF SEPARATED BY SPACE .
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EXPORTING
TITLEBAR = 'Print All?'
TEXT_QUESTION = sPromptF
DISPLAY_CANCEL_BUTTON = ' '
IMPORTING
ANSWER = cAnswer
EXCEPTIONS
TEXT_NOT_FOUND = 1
OTHERS = 2 .
IF SY-SUBRC <> 0 .
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
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ENDIF .
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PERFORM First .
PERFORM GetGridData .
PERFORM RefreshALV .
" >>> Need Screen Refreshed right here
PERFORM Print .
DO .
PERFORM Next .
PERFORM GetGridData .
PERFORM RefreshALV .
" >>> Need Screen Refreshed right here
PERFORM Print .
IF oLTend->GetIndex( ) = oLTend->GetCount( ) .
EXIT .
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ENDDO .
ENDIF .
ENDIF .
ENDFORM .
That is the general flow. Hope that helps, if more info is needed, let me know. -
Connection Pool refresh with weblogic
Hi,
In my application when weblogic starts up it creates connection
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The problem I am facing:
If the database connectivity is not there when the weblogic
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In my application when weblogic starts up it creates connection
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The problem I am facing:
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