Monday, August 19, 2013

Invoking WLST from Ant

There are many Middleware Admins who knows do build and deployment out there using Ant to automate their Oracle Fusion Middleware suite configurations on WebLogic domain. and if you would like to embed your WLST configuration scripts into your ant build.xml script files, you can certainly do so. This is simple and easy task which I suppose to post it long back :)

Invoking WLST from a build.xml

Invoking WLST from ANT Script

We can use the WLST script within the build.xml that is between
The other option is you can develop a WLST script in regular fashion, invoke with script path.
We can use both of them part of ANT script(build.xml) invokes part of WLST individual file(.py) then there would be priority which part must be executed first that we can handle with the attribute 'executeScriptBeforeFile' by default it is true you can use false when you don't want.

There are situations where you need to invoke the WLST script from ANT script. There are following possibilities:

configure WebLogic resources with ANT
Server Control using ANT
Monitoring using ANT

The main advantages of using 'WLST with ANT' comes when there is complete templatization of the WebLogic domain configurations for heavy resource configurations as part, such as JMS Resources, JDBC datasources, Message Bridges etc.,

Sample WLSTbuild.xml

Sample WLSTbuild.properties file

Now create a properties file say wlstbuild.properties that initialized in the ant script with property element.

weblogic.home.dir=C:/Oracle/Middleware/wlserver_10.3
weblogic.lib.dir=${weblogic.home.dir}/server/lib
wlst.script.source=C:/pbin/test.py

Sample Python script invoked in ant script

The test.py WLST Script will fetch the Server list online WLST.

# Started recording all user actions at Tue Dec 18 22:41:59 IST 2012
svrs = cmo.getServers() 
print 'Servers in the domain are' 
for x in svrs: 
        print x.getName()

How to invoke WLST from ant?

Here the pre-requisite to run the ant script assumed that the WebLogic domain already created and Running fine. Some of the build experts prefer to start internal targets with dashes just to make sure users cannot run them from the command line. In fact, I make it a standard practice to have all internal targets start with - just for this reason. You can try the old double-dash trick. I don't have Ant installed on my current system, so I can't test it. Double dashes is a common Unix trick that most commands use to help end parameters when you have files and stuff that start with a dash. By the way, the tasks should be the last thing on your command line:

$ ant -f wlstbuild.xml -- -stopservers

Targets beginning with a hyphen such as "-stopservers" is valid, and it can be used to name targets that should not be called directly from the command line. Usually, it would be called by someother target such as app-deployment depends on targets as -stopapp, -undeploy, -deploy, -startapp, -stopservers, -startservers etc.

To invoke you need to run the setWLSEnv.sh/cmd
prompt$ ant -f wlstbuild.xml

Running ant embed WLST script

Wednesday, June 26, 2013

JMS Bridges using WLST

My new project where I found many new things to learn about JMS. I was searching for a Configure JMS bridge using Python, but there very few blog posts found and that too, their scope limited to target to AdminServer and they are limited for single bridge configuration only. We have analyzed and developed this where you can take complete advantage.

Oracle WebLogic JMS- MQ Series

WebLogic JMS Bridge to MQ Series broker

Oracle WebLogic JMS-JMS

The JMS bridge configuration is dependency on Local and remote Queues or Topics. The bridge can be established between source and targeted destinations need to be created with the following parameters :

JMS bridge destination
Connection URL
JMS ConnectionFactory JNDI Name
JMS destination JNDIName

Once the source and target is configured you can configure the message bridges. The bridge configuration requires the following:

Bridge name
Source destination
Target destination
JMS Bridge deployment target Cluster or server

Usually there could be different messaging systems can communicate with JMS Bridges. Bridge can be JMS-JMS communication or external systems can be integrated with messages. This messages can be plain Text or xml files or Java objects. To handle them JEE applications must use Message driven Beans MDB.

#========================================
#  JMS Bridge Configuration script.
#  FileName:  jmsBridges.py
#=========================================
from java.util import *
from java.io import FileInputStream
def createdestination(JMSBridgeDestination,ConnectionURL,ConnectionFactoryJNDIName,DestinationJNDIName):
        cmo.createJMSBridgeDestination(JMSBridgeDestination)
        JMSBridgeDestination = cmo.lookupJMSBridgeDestination(JMSBridgeDestination)
        JMSBridgeDestination.setClasspath('')
        JMSBridgeDestination.setConnectionURL(ConnectionURL)
        JMSBridgeDestination.setAdapterJNDIName('eis.jms.WLSConnectionFactoryJNDINoTX')
        JMSBridgeDestination.setConnectionFactoryJNDIName(ConnectionFactoryJNDIName)
        JMSBridgeDestination.setDestinationJNDIName(DestinationJNDIName)
        return JMSBridgeDestination
 
def create_bridge(MessagingBridge,Cluster,srcbdest,TJMSBridgeDestination,qos):
        cmo.createMessagingBridge(MessagingBridge)
        bridge = cmo.lookupMessagingBridge(MessagingBridge)
        cluster = cmo.lookupCluster(Cluster)
        targets = bridge.getTargets()
        targets.append(cluster)
        bridge.setTargets(targets)
        bridge.setSourceDestination(srcbdest)
        bridge.setTargetDestination(TJMSBridgeDestination)
        bridge.setStarted(true)
        bridge.setSelector('')
        bridge.setQualityOfService(qos)

 
def getp(x):
        return configProps.get(""+x+"")
 
envproperty=""
if (len(sys.argv) > 1):
  envproperty=sys.argv[1]
else:
    print "Environment Property file not specified"
    sys.exit(2)
 
propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)
 
USER=configProps.get("USER")
PASSWD=configProps.get("PASSWD")
ADMNURL=configProps.get("ADMNURL")
 
print 'CONNECT TO ADMIN SERVER'
connect(USER, PASSWD, ADMNURL)
 
print 'START EDIT MODE'
n=int(getp("num_of_bridges")) # number of Brdiges
edit()
startEdit()
try:
        print 'CREATE SOURCE JMS BRIDGE DESTINATION'
        for i in range(1,n+1):
                # if Bridge already exists skip
                MessagingBridge=getp("MessagingBridge"+str(i))
                print "checking ... ", MessagingBridge
                ref = getMBean("/MessagingBridges/"+MessagingBridge)
                if(ref == None):
                        S_Dest=getp("S_Dest"+str(i))
                        S_ConnURL=getp("S_ConnURL"+str(i))
                        S_ConnFJNDI=getp("S_ConnFJNDI"+str(i))
                        S_DestJNDI=getp("S_DestJNDI"+str(i))
                        src=createdestination(S_Dest,S_ConnURL,S_ConnFJNDI,S_DestJNDI)

                        print 'CREATE TARGET JMS BRIDGE DESTINATION'+str(i)

                        T_Dest=getp("T_Dest"+str(i))
                        T_ConnURL=getp("T_ConnURL"+str(i))
                        T_ConnFJNDI=getp("T_ConnFJNDI"+str(i))
                        T_DestJNDI=getp("T_DestJNDI"+str(i))

                        target=createdestination(T_Dest,T_ConnURL,T_ConnFJNDI,T_DestJNDI)
                        print 'CREATE MESSAGING BRIDGE'
                        cluster=getp("jms_mod_target1")
                        qos=getp("QualityOfService"+str(i))
                        create_bridge(MessagingBridge,cluster,src,target,qos)
                else:
                        pass

Flexibility in defining Bridges Passed through many patterns and learnings, I have developed this as reusable, generic as possible. Scope for further extendable.

I believe "Do it One at Once", To make work simple, Here I had used JMS Bridges with non-transactional. You can change if required. Correspondingly there is the implication with "Atmost-once" option. The "Exactly-Once" option is best suitable choice for non-transnational messages QoS.

WLST Bridge Configuration Properties

You need to customize it according to your domains. This script allows you to create as many bridges as you wish. Just one thing you need to change in the properties is that num_of_bridges value.
Here is the Sample properties file where you can replace the values according to your requirements. The WebLogic destination can be identified with t3 protocol, whereas MQ series uses file:// protocol which requires the full path of the path so it looks like three slashes (file:///)

In the sample CF are connectionFactories that participate in the bridge communication. The name with Dest indicates the Queues/Topics which are involved in the message holders.

#JMS BRIDGES CONFIGURATION FOR MQ

numBridges=1

MessagingBridge1=com.my.TestBridge
QualityOfService1=Atmost-once

S_ConnFJNDI=mywlsCF
S_ConnURL=t3://hostname:port
T_ConnURL=file:///mqlocal/jndi/bindings
T_ConnFJNDI=MQCF

S_Dest1=com.mq.bridge.my.Qsrc
S_DestJNDI1=test/outgoing/request
T_Dest1=com.mq.bridge.my.Qdest
T_DestJNDI1=QSRC_TO_QDEST

To execute the above Python script for JMS Bridge configuration can be done as follows:

java weblogic.WLST JmsBridge.py bridge.properties

Scalability for Bridge

After a while working in the project there is new requirement came in to add few more bridges to the existing Domain. Now my task is that, need to skip those bridges which are existing bridges list and need to create the new bridge only when it is NOT in the list. To do so I have solution that using Bridge Runtime MBean finding in the run-time domain, pass is keyword to skip them. So need to update the numBrige variable in properies file and append the new bridge details at the end.

The key logic is here...

              # if Bridge already exists skip
                MessagingBridge=getp("MessagingBridge"+str(i))
                print "checking ... ", MessagingBridge
                ref = getMBean("/MessagingBridges/"+MessagingBridge)
                if(ref == None):
                       #create the bridge
                else:
                       pass # skipping

Monitoring Bridges
In WebLogic 11g (10.3.x version) we can only able to fetch the monitoring information about Bridges configured on the domain using weblogic.Admin. The KSH script developed for bridge monitoring status.

Sunday, June 23, 2013

Network Communicaiton module using in WLST Automations

Network Socket with Python/WLST

Internet protocol libraries for Python can be used in WLST. hostname you can use to make most generic for your automation scripts. Use this idea in build and deployment process.

Python libraries that can be imported to WLST shell

Let's start exploring the most network related libraries useful for WLST scripts

Benefits of Python network, communication libraries importing in WLST

Use `socket` to verify if WebLogic servers, admin servers, or managed servers are reachable on specific ports (e.g., 7001 for HTTP, 7002 for HTTPS).
Automated Alerts: Send email notifications for WebLogic events, such as server crashes, deployment failures, or performance thresholds (e.g., high CPU usage).
Integration with CI/CD: Include email alerts in deployment scripts to inform teams about successful or failed deployments.
Enhances communication in automated workflows, reducing manual oversight.
Supports proactive incident management by notifying teams instantly.
Customizable for different recipients or conditions (e.g., based on server metrics).

wls:/offline> import socket
wls:/offline> print(socket.gethostname())
pavanb.wlst.by.examples.com

There are many socket related modules and built-in functions available to check we can run dir command on each to know wha is inside that package.

wls:/offline> import smtplib
wls:/offline> dir(smtplib)
['CRLF', 'OLDSTYLE_AUTH', 'SMTP', 'SMTPAuthenticationError', 'SMTPConnectError',
 'SMTPDataError', 'SMTPException', 'SMTPHeloError', 'SMTPRecipientsRefused', 'SM
TPResponseException', 'SMTPSenderRefused', 'SMTPServerDisconnected', 'SMTP_PORT'
, 'SSLFakeFile', 'SSLFakeSocket', '__all__', '__doc__', '__file__', '__name__',
'base64', 'encode_base64', 'hmac', 'quoteaddr', 'quotedata', 're', 'rfc822', 'so
cket', 'types']

FTP library in WLST

wls:/offline> import ftplib
wls:/offline> dir(ftplib)
['CRLF', 'Error', 'FTP', 'FTP_PORT', 'MSG_OOB', 'Netrc', '_150_re', '_227_re', '
__all__', '__doc__', '__file__', '__name__', 'all_errors', 'error_perm', 'error_
proto', 'error_reply', 'error_temp', 'ftpcp', 'os', 'parse150', 'parse227', 'par
se229', 'parse257', 'print_line', 'socket', 'string', 'sys', 'test']

Did you ever thought of using FTP from WLST?

IMAPLIB in WLST

wls:/offline> import imaplib
wls:/offline> dir(imaplib)
['AllowedVersions', 'CRLF', 'Commands', 'Continuation', 'Debug', 'Flags', 'IMAP4
', 'IMAP4_PORT', 'Int2AP', 'InternalDate', 'Internaldate2tuple', 'Literal', 'Mon
2num', 'ParseFlags', 'Response_code', 'Time2Internaldate', 'Untagged_response',
'Untagged_status', '_Authenticator', '__all__', '__doc__', '__file__', '__name__
', '__version__', '_cmd_log', '_cmd_log_len', '_dump_ur', '_log', '_mesg', 'bina
scii', 'print_log', 'random', 're', 'socket', 'sys', 'time']

This is implib

telnet Library in WLST

Just for connectivity before create your database connection pools.

wls:/offline> import telnetlib
wls:/offline> dir(telnetlib)
['AO', 'AUTHENTICATION', 'AYT', 'BINARY', 'BM', 'BRK', 'CHARSET', 'COM_PORT_OPTI
ON', 'DEBUGLEVEL', 'DET', 'DM', 'DO', 'DONT', 'EC', 'ECHO', 'EL', 'ENCRYPT', 'EO
R', 'EXOPL', 'FORWARD_X', 'GA', 'IAC', 'IP', 'KERMIT', 'LFLOW', 'LINEMODE', 'LOG
OUT', 'NAMS', 'NAOCRD', 'NAOFFD', 'NAOHTD', 'NAOHTS', 'NAOL', 'NAOLFD', 'NAOP',
'NAOVTD', 'NAOVTS', 'NAWS', 'NEW_ENVIRON', 'NOOPT', 'NOP', 'OLD_ENVIRON', 'OUTMR
K', 'PRAGMA_HEARTBEAT', 'PRAGMA_LOGON', 'RCP', 'RCTE', 'RSP', 'SB', 'SE', 'SEND_
URL', 'SGA', 'SNDLOC', 'SSPI_LOGON', 'STATUS', 'SUPDUP', 'SUPDUPOUTPUT', 'SUPPRE
SS_LOCAL_ECHO', 'TELNET_PORT', 'TLS', 'TM', 'TN3270E', 'TSPEED', 'TTYLOC', 'TTYP
E', 'TUID', 'Telnet', 'VT3270REGIME', 'WILL', 'WONT', 'X3PAD', 'XASCII', 'XAUTH'
, 'XDISPLOC', '__all__', '__doc__', '__file__', '__name__', 'select', 'socket',
'sys', 'test', 'theNULL']

This is having more functions and variables check it...

httplib in WLST for Sanity check

You can use 'httplib' for checking sanity of an application after deployment.

wls:/offline> import httplib
wls:/offline> dir(httplib)
['BadStatusLine', 'CannotSendHeader', 'CannotSendRequest', 'FakeSocket', 'HTTP',
 'HTTPConnection', 'HTTPException', 'HTTPMessage', 'HTTPResponse', 'HTTPS', 'HTTPSConnection', 'HTTPS_PORT', 'HTTP_PORT', 'ImproperConnectionState', 'IncompleteRead', 'InvalidURL', 'LineAndFileWrapper', 'NotConnected', 'ResponseNotReady', 'SSLFile', 'SharedSocket', 'SharedSocketClient', 'StringIO', 'UnimplementedFileMode', 'UnknownProtocol', 'UnknownTransferEncoding', '_CS_IDLE', '_CS_REQ_SENT', '_CS_REQ_STARTED', '_UNKNOWN', '__all__', '__doc__', '__file__', '__name__', 'errno', 'error', 'mimetools', 'socket', 'test', 'urlsplit']

Here, I fond the HTTPLIB example given by Valdmir blog post->Python: HTTP Basic authentication with httplib. Where in the Python script used to do the Sanity test for a provided application URL, which uses the authentication provided using base64 module.

The xmlrpclib library for WLST

This is xmrpclib can be used while interacting with config.xml file. have a look and decide :)

wls:/offline> import xmlrpclib
wls:/offline> dir(xmlrpclib)

['ArrayType', 'Binary', 'Boolean', 'BuiltinFunctionType', 'BuiltinMethodType', 'ClassType', 'CodeType', 'ComplexType', 'DateTime', 'DictProxyType', 'DictType','DictionaryType', 'EllipsisType', 'Error', 'ExpatParser', 'False', 'FastParser',
 'FastUnmarshaller', 'Fault', 'FileType', 'FloatType', 'FrameType', 'FunctionType', 'GeneratorType', 'InstanceType', 'IntType', 'LambdaType', 'ListType', 'LongType', 'MAXINT', 'MININT', 'Marshaller', 'MethodType', 'ModuleType', 'NoneType',
'ObjectType', 'ProtocolError', 'ResponseError', 'SafeTransport', 'Server', 'ServerProxy', 'SgmlopParser', 'SliceType', 'SlowParser', 'StringType', 'StringTypes', 'TracebackType', 'Transport', 'True', 'TupleType', 'TypeType', 'UnboundMethodT
ype', 'UnicodeType', 'Unmarshaller', 'WRAPPERS', 'XRangeType', '_Method', '__doc__', '__file__', '__name__', '__version__', '_decode', '_stringify', 'binary', 'boolean', 'classDictInit', 'datetime', 'dumps', 'escape', 'getparser', 'loads','operator', 're', 'string', 'time']

Saturday, June 15, 2013

SOA & ADF Bounce script

We were working on SOA doamin for automation with WLST. After woring on the retiring and activation of the composites of SOA_Infra we are ready for shutdown the managed servers. Now the task is simple we have break-down the task into two simple functions.

stop the cluster
start the cluster
Main program

Here the main program uses the logic of fetching the cluster list from the admin server. The functions are made in such a way that each cluster control operation can be tracked with state command, that will tell about all the managed servers in the cluster state. Once we did a trial found that there could be some time required for shutdown the managed servers. Double checked the state with Console as well. Re-run the same script with the menu option to start the Cluster.

Here NodeManager is independently running on each machines where the cluster spread across the managed servers are running. So, this script only controls the clustered managed servers.

You can extend the same script to turn down the Admin server as well. after cluster down you can have that action. The command is shutdown('AdminServer', 'Server')

If you want more stories on the automation go thru the recommended book!

#====================================
# 
# Description: This script objective is to provide the choices to perform operation
#    1 is for stop the cluster
#    2 is for start the cluster
#    other is for exit from this script
#  this uses two functions startClstr and stopClstr which takes parameter as 'cluster name'.
#
#====================================
# Stop all instances of a Cluster 
#====================================
def stopClstr(clstrName):
 try:
  shutdown(clstrName,"Cluster")
  java.lang.Thread.sleep(25000)
  state(clstrName,"Cluster")
 except Exception, e:
  print 'Error while shutting down cluster ',e
 
#====================================
# Startp all instances of a Cluster 
#====================================
def startClstr(clstrName):
 try:
  start(clstrName,"Cluster")
  state(clstrName,"Cluster")
 except Exception, e:
  print 'Error while shutting down cluster ',e
 

if __name__== "main":
 connect('weblogic','welcome1','t3://localhost:7001')
 print "1.To Stop Instances"
 print "2.To Start Instances"
 print "3.Exit from Menu"
 ch=input('Enter Your Choice: ')
 cd("Clusters")
 clstrList=ls(returnMap='true')
 if ch== 1 :
  for clstr in clstrList:
   stopClstr(clstr)
 elif ch == 2 :
  for clstr in clstrList:
   startClstr(clstr)
 else:
  exit()

SOA Retire Activate Composites

Why we need retire and activate composites?

Before you go for bouncing the SOA Suite Domain which contains SOA, ADF Clusters with multiple managed servers, where each Weblogic server hosted all the sessions which are in execution state on them must be persisted to a restore further when Servers back to RUNNING state. To make this possible we need to use the retire composites and then after RUNNING servers bring them back to activate state for service.

Here is a sample trail script where the SOA application composites management. Here you need to navigate to the wlst.sh or cmd path. To access SCA function you must start WLST from /common/bin. When trying to run the SOA WLST command from regular 'java weblogic.WLST' cannot execute the SCA functions. When you try to execute the sca_retireComposite() it could throw the 'NameError'. So the cause is started WLST from the wrong location, to avoid that our PATH is to change and run the script from the following path: $SOA_ORACLE_HOME/common/bin/wlst.sh will work on Unix/Linux environments. Similarly you choose for Windows environment instead of using executing the shell script you need to use 'call' in the batch script.

Here the major task we have proceeding with the following two functions.

Retire is to retire the composites .
Activate is to activate the composites.

loadProperties('/user/test/scripts/composites.properties')
def retireComposites(Soahost,port, username,password,scacompositename, ver):
        sca_retireComposite(Soahost, port, username, password, scacompositename, revision=ver, partition='default') 
def activateComposites(Soahost,port, username,password,scacompositename, ver):
        sca_activateComposite(Soahost, port, username, password, scacompositename, revision=ver, partition='default')
if __name__== "main":
        print "1.To retire composites"
        print "2.To activate composites"
        print "3.Exit from Menu"
        ch=input('Enter Your Choice: ')
        f=open('/user/test/scripts/composites.txt','r')
        if ch== 1 :
                for c in f:
                        c=c.rstrip('\n')
                        retireComposites(Soahost,port, username,password,c, ver)
        elif ch == 2 :
                for c in f:
                        c=c.rstrip('\n')
                        activateComposites(Soahost,port, username,password,c, ver)
        else:
                exit()
        f.close()

Here is the composite.txt sample, where you can specify your composites configured in the SOA partition. Which are usually visible on enterprise manager(em) console. Oracle must given a easy module for displaying the deployed SCA composites list. Anyway we have stored in a separate file as shown below. You have flexibility of changing the order when you use this composite.txt file.

B2B_BPEL_TEST_Sub_reccive
B2B_BPEL_TIBCO_PUB_invoke

The actual trouble started when we tried to use a separate composite.txt file. each line can be read and the value always having at the end an EOL ( \n ). To supress that escape sequance we have used python scring function rtrip function.

The regular properties file which is loaded on the fist line can be created as follows:

Soahost=localhost
port=8001
username=weblogic
password=welcome1
ver=1.0

Please share this with your friends and collegues, comment if you already tried or successfully implemented on your SOA environment.

Video References:

Iris Li demonstrates how to deploy a SOA composite application using the Oracle Enterprise Manager 11g

SOA Composites references :

Sunday, April 14, 2013

Self-tuned Thread Pool Count

-->

Thread Pool count will give you the idea about the WebLogic Server instance throughput. First let us see how to monitor a server instance with WLST. if you provide the instance name the script will search the corresponding listen address, listen port for that instances then forms a URL using t3 protocal(WebLogic specific protocol) which is used to connect the instance and get the serverRuntime MBean which will contains that servers ThreadPoolRuntime.

Hogging Threads

Hogging Threads that have taken the too much time and we can assume that they are never going to come back. Hogging threads help us take some decisions, lets say many threads are hogging, we may take a decision to create new threads for next cycle.

My understanding about Thread States in WebLogic Server:

ACTIVE
STUCK
STANDBY

A live thread which is ready to process the request, which is known as ACTIVE state. That is indicated when therad newly created. WebLogic Server start the server instance with 1 ACTIVE thread and the thread count grows as per the min size if specified other wise it will do self-tune as per the request.

Threads might wait for other thread to release resource. This might happen due to application varialbles. The variables are 2 types thread-safe other is risk for thread. All local variables in the methods are thread-safe. The variable defined in class level are unsafe. which causes memory leak, this state of threads are known as hogging. WebLogic identify a thread as hog by the time interval. If thread is waiting more than 600 sec will be treated as hog. STUCKthread interval we can tune as per the project need.

If the number of HoggingThreadCount increases then the server health is in dangerous. That time you can take the ThreadDump

After Threads increase to a max utilization then the thread will be in STANDBY state.

Let us see the following script will get the Thread statistics for a given Weblogic server instance.

# This script is for single instance thread statistics
# You can enhance it further to take thread dump as per your env.

import sys
from java.util import Date

ucf='scriptpath/userConfigFile.sec'
ukf='scriptpath/userKeyFile.sec'
ECODE='\n \033[0m' # ending of color code

def ThreadCnt():
    try:
        print 'Connecting to Admin server....'
        connect(userConfigFile=ucf, userKeyFile=ukf, url='t3://admindns:port')
    except:
        print 'Admin Server NOT in RUNNING state....'
    urldict={}
    serverlist=getRunningServerNames()  # Getting Serverlist
    for svr in serverlist:
        cd("/Servers/"+svr.getName())
        urldict[svr.getName()]='t3://'+get('ListenAddress')+':'+str(get('ListenPort'))

    x = raw_input('Enter a server instance name : ')
    try:
        connect(userConfigFile=ucf, userKeyFile=ukf,url=urldict[x])
        serverRuntime()
        openSocks = cmo.getOpenSocketsCurrentCount();
        print('Open Sockets:: ' + str(openSocks));
        cd('serverRuntime:/ThreadPoolRuntime/ThreadPoolRuntime/')
        compReq = cmo.getCompletedRequestCount()
        status = cmo.getHealthState()
        hoggingThreads = cmo.getHoggingThreadCount()
        totalThreads = cmo.getExecuteThreadTotalCount()
        idleThrds = cmo.getExecuteThreadIdleCount()
        pending = cmo.getPendingUserRequestCount()
        qLen = cmo.getQueueLength()
        thruput = cmo.getThroughput()
        if idleThrds == 0:
            pstr='\033[1;47;31m'    # RED color
        else:
            pstr='\033[1;40;32m'    # GREEN color
        print(pstr+'Status of the Server: ' + str(status)  +ECODE
            +'The completed Requests: ' + str(compReq) +ECODE'
            +'Total the threads no s: ' + str(totalThreads)+ECODE
            +'The Idle threads: ' + str(idleThrds)+ECODE
            +'Hogging threads : ' + str(hoggingThreads)+ECODE
            +'Pending : ' + str(pending)+ECODE
            +'ThreadPool QueueLength: ' + str(qLen)+ECODE
            +'Server (Throughput): ' +str(thruput)+ECODE)
    except:
        print 'Exception... Unable to connect to given Server', x
        pass
    quit()

def quit():
    d = Date() # now
    print  d
    print '\033[1;40;32mHit any key to Re-RUN this script ...'+ECODE
    Ans = raw_input("Are you sure Quit from WLST... (y/n)")
    if (Ans == 'y'):
         disconnect()
        stopRedirect()
        exit()
    else:
        ThreadCnt()

def getRunningServerNames():
    domainConfig()
    return cmo.getServers()

if __name__== "main":
    redirect('./logs/ThreadCntwlst.log', 'false')
    ThreadCnt()
    print 'done'

WebLogic Server Health Status can be one of the following:

HEALTH_OK
HEALTH_WARN
HEALTH_FAILED
HEALTH_CRITICAL
LOW_MEMORY_REASON
HEALTH_OVERLOADED

OK is indicates everything fine, no worries!!

WARN raised when there is few stuck threads in the server instance.

LOW_MEMORY_REASON is going to tell you about JVM crash expected. You can configure to 'Exit' the managed server on low memory conditions with the help of NodeManager and WorkManager.

CRITICAL when multiple number of stuck threads happening and the threadpool count reaching unsual number. This case you need to suspect Network, JDBC or back-end connectivity has trouble.
FAILED happen when the new deployments fails. The NodeManager should not restart this managed server.

OVERLOADED Change the server health state to OVERLOADED on overload. The Nodemanager need to work at this state and bounce such WebLogic instance. This is a new feature of WebLogic 9.x and later versions, for detecting, avoiding and recovering from an overload condition of a WebLogic managed server. Overload protection can be used to throttle Work Managers and thread pools for performance. You can configure Shutdown the Work Manager or application on stuck threads when it crosss more than 5 or you can set threshold.

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Good Reference links:

http://www.orkut.com/Main#CommMsgs.aspx?cmm=13504859&tid=5347262093468712421

http://forums.oracle.com/forums/thread.jspa?threadID=683752

http://www.coderanch.com/t/427054/BEA-Weblogic/Issue-with-WeblogicServer

Thursday, April 11, 2013

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Do you know this fun thing about Python scripting sing a poem of quotations just by by importing 'this' module.

wls:/offline> import this
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!
wls:/offline>

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