Backend connection in JspDynpages

Hi All,
how to connect backend in Jspdynpage
I am new to portals i implemented application using jspdynpage in that
i have to connect to the backend
can anyboby explain me the procedure in detail?
Thanks in advance.

Hi,
It depends on which backend system you want to connect.
Check this for general concepts:
http://help.sap.com/saphelp_nw04s/helpdata/en/ed/89746bea5011d6b2e800508b6b8a93/frameset.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/97/fabc3d8af79633e10000000a11405a/frameset.htm
Example:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/90fc8a14-a02c-2a10-5a91-821561099192
Regards,
Praveen Gudapati

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Hello All,
We have an interesting requirement.
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Message was edited by:
Ricardo Quintino

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i was installing a couple of DPS 6.2 on Windows 2003 servers.
I defined data sources that point to PGP Universal Servers ldap key store, activated proactive monitoring to keep alive connections and poll them every 30 seconds. I open 5 initial connection, increment by 1 with a max of 100 connections.
DPS now opens these connections on startup and everything looks fine for a while, but if i wait a couple of minutes without activity from a client querying the key server through the proxy server, the DPS puts most of the connections to a close_wait state and does not really recognize that these connections are not available any more.
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some more information:
it seems as if the DPS is only polling one of the connections to the LDAP backend server to keep the connection alive, it does not poll al connections. here is the logfile from openldap running on 1389 on the backend:
conn=26 fd=16 ACCEPT from IP=10.218.1.30:3937 (IP=0.0.0.0:1389)
Nov 30 10:27:36 zuni2 slapd[4398]: conn=26 op=0 BIND dn="" method=128
Nov 30 10:27:36 zuni2 slapd[4398]: conn=26 op=0 RESULT tag=97 err=0 text=
Nov 30 10:27:36 zuni2 slapd[4398]: conn=26 op=1 SRCH base="" scope=0 deref=0 filter="(objectClass=*)"
Nov 30 10:27:36 zuni2 slapd[4398]: conn=26 op=1 SRCH attr=subschemasubentry
Nov 30 10:27:36 zuni2 slapd[4398]: conn=26 op=1 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:27:36 zuni2 slapd[4398]: conn=27 fd=21 ACCEPT from IP=10.218.1.30:3939 (IP=0.0.0.0:1389)
Nov 30 10:27:36 zuni2 slapd[4398]: conn=27 op=0 BIND dn="" method=128
Nov 30 10:27:36 zuni2 slapd[4398]: conn=27 op=0 RESULT tag=97 err=0 text=
Nov 30 10:27:36 zuni2 slapd[4398]: conn=27 op=1 SRCH base="cn=Subschema" scope=0 deref=0 filter="(objectClass=subschema)"
Nov 30 10:27:36 zuni2 slapd[4398]: conn=27 op=1 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 fd=23 ACCEPT from IP=10.218.1.30:3941 (IP=0.0.0.0:1389)
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 op=0 SRCH base="cn=pgpserverinfo" scope=0 deref=0 filter="(|(objectClass=*)(?=undefined))"
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 op=0 SRCH attr=1.1
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 op=1 UNBIND
Nov 30 10:27:36 zuni2 slapd[4398]: conn=28 fd=23 closed
Nov 30 10:27:36 zuni2 slapd[4398]: conn=29 fd=23 ACCEPT from IP=10.218.1.30:3942 (IP=0.0.0.0:1389)
Nov 30 10:27:42 zuni2 slapd[4398]: conn=30 fd=24 ACCEPT from IP=10.218.1.30:3948 (IP=0.0.0.0:1389)
Nov 30 10:27:42 zuni2 slapd[4398]: conn=30 op=0 SRCH base="cn=pgpserverinfo" scope=0 deref=0 filter="(|(objectClass=*)(?=undefined))"
Nov 30 10:27:42 zuni2 slapd[4398]: conn=30 op=0 SRCH attr=1.1
Nov 30 10:27:42 zuni2 slapd[4398]: conn=30 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:27:48 zuni2 slapd[4398]: conn=30 op=1 SRCH base="cn=pgpserverinfo" scope=0 deref=0 filter="(|(objectClass=*)(?=undefined))"
Nov 30 10:27:48 zuni2 slapd[4398]: conn=30 op=1 SRCH attr=1.1
Nov 30 10:27:48 zuni2 slapd[4398]: conn=30 op=1 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:27:54 zuni2 slapd[4398]: conn=30 op=2 SRCH base="cn=pgpserverinfo" scope=0 deref=0 filter="(|(objectClass=*)(?=undefined))"
Nov 30 10:27:54 zuni2 slapd[4398]: conn=30 op=2 SRCH attr=1.1
Nov 30 10:27:54 zuni2 slapd[4398]: conn=30 op=2 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:28:00 zuni2 slapd[4398]: conn=30 op=3 SRCH base="cn=pgpserverinfo" scope=0 deref=0 filter="(|(objectClass=*)(?=undefined))"
Nov 30 10:28:00 zuni2 slapd[4398]: conn=30 op=3 SRCH attr=1.1
Nov 30 10:28:00 zuni2 slapd[4398]: conn=30 op=3 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 fd=29 ACCEPT from IP=127.0.0.1:48798 (IP=127.0.0.1:9002)
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 op=0 SRCH base="o=Uploaded PGP keys" scope=2 deref=0 filter="(objectClass=*)"
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 op=0 SRCH attr=pgpKey
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text=
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 op=1 UNBIND
Nov 30 10:28:01 zuni2 slapd[4398]: conn=31 fd=29 closedonly conection 30 is polled, the other go into a timeout at the backend server after a while and DPS does not recognize this and does not close the connection.
Nov 30 10:28:41 zuni2 slapd[4398]: conn=29 fd=23 closed (connection lost)
Nov 30 10:28:48 zuni2 slapd[4398]: conn=26 fd=16 closed (idletimeout)
Nov 30 10:28:48 zuni2 slapd[4398]: conn=27 fd=21 closed (idletimeout)Any ideas how i can make DPS to poll all connections or at least recognize that some of the connections were closed?
Edited by: zengelan on Nov 30, 2007 1:47 AM
Edited by: zengelan on Nov 30, 2007 1:51 AM

Hi andi,
As you've noticed, DPS uses a dedicated connection for server health-check.
The problem you mention may appear when LDAP directory servers are configured to drop inactive connections after x seconds, x > health-check polling period and no traffic received by the proxy.
Indeed, health-check does not detect anything wrong as periodic traffic prevent the dedicated heath-check connection from being dropped. However, pooled connections remain inactive, so they become stale.
The number of (potentially) stale connection increase with the size of the pool, that's the reason why you need to do multiple (failing) queries to clean up the connection pool.
Error detection is improved in 6.3 (out beginning of CY08) when a stale connection is retrieved from the connection pool.
Meanwhile, it is possible to configure the proxy to periodically generate (dummy) traffic to those pooled connections that remained inactive for some time. This usually solves this kind of problem at the expense of extra outgoing network traffic when the proxy is not used.
-Sylvain

Jolt backend connection failed

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Everytime Tuxedo (V7.0) is rebooted, I have to reboot also Weblogic (V5.1.0). How can I configure it to automatically reconnect to the database?
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sapgw77 3377/tcp
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Hello out there,
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Best Regards
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I have uninstalled and installed again but still have same issue.
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