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PH19838: SERVER BECOMES UNRESPONSIVE WITH WEBUI HTTPS THREADS WAITING ON THREAD CREATING LDAP CONNECTION

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APAR status

  • Closed as program error.

Error description

  • UrbanCode Deploy server becomes unresponsive with WebUI https
    threads waiting on another https thread.
    This https thread creates a LDAP connection while the LDAP
    server is at that point not reachable.
    The thread does not progress over a minute and is trying to do
    the SSL handshake.
    
    The stack trace of the https thread looks like this with SSL
    handshake omitted
    at
    com/sun/jndi/ldap/pool/Pool.getPooledConnection(Pool.java:142(Co
    mpiled Code))
    at
    com/sun/jndi/ldap/LdapPoolManager.getLdapClient(LdapPoolManager.
    java:341(Compiled Code))
    at
    com/sun/jndi/ldap/LdapClient.getInstance(LdapClient.java:1619(Co
    mpiled Code))
    at com/sun/jndi/ldap/LdapCtx.connect(LdapCtx.java:2761(Compiled
    Code))
    at com/sun/jndi/ldap/LdapCtx.<init>(LdapCtx.java:331(Compiled
    Code))
    at
    com/sun/jndi/ldap/LdapCtxFactory.getUsingURL(LdapCtxFactory.java
    :204(Compiled Code))
    at
    com/sun/jndi/ldap/LdapCtxFactory.getUsingURLs(LdapCtxFactory.jav
    a:222(Compiled Code))
    at
    com/sun/jndi/ldap/LdapCtxFactory.getLdapCtxInstance(LdapCtxFacto
    ry.java:165(Compiled Code))
    at
    com/sun/jndi/ldap/LdapCtxFactory.getInitialContext(LdapCtxFactor
    y.java:95(Compiled Code))
    at
    javax/naming/spi/NamingManager.getInitialContext(NamingManager.j
    ava:695(Compiled Code))
    at
    javax/naming/InitialContext.getDefaultInitCtx(InitialContext.jav
    a:324(Compiled Code))
    at
    javax/naming/InitialContext.init(InitialContext.java:255(Compile
    d Code))
    at
    javax/naming/InitialContext.<init>(InitialContext.java:227(Compi
    led Code))
    at
    javax/naming/directory/InitialDirContext.(InitialDirContext.java
    :112(Compiled Code))
    at
    com/urbancode/security/authentication/ldap/LdapUtil.createContex
    t(LdapUtil.java:94(Compiled Code))
    at
    com/urbancode/security/authentication/ldap/LdapUtil.createContex
    t(LdapUtil.java:67(Compiled Code))
    at
    com/urbancode/security/authentication/ldap/LdapLoginModule.isUse
    rAuthentic(LdapLoginModule.java:181(Compiled Code))
    at
    com/urbancode/security/authentication/ldap/LdapLoginModule.login
    (LdapLoginModule.java:163(Compiled Code))
    

Local fix

  • Once the LDAP server is reachable again, restart the UrbanCode
    Deploy server so that blocked threads connecting to LDAP get
    released. Afterwards the UrbanCode Deploy server works as
    expected.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All end users on all supported browsers.                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * UrbanCode Deploy server becomes unresponsive with WebUI      *
    * https                                                        *
    * threads waiting on another https thread.                     *
    * This https thread creates a LDAP connection while the LDAP   *
    * server is at that point not reachable.                       *
    * The thread does not progress over a minute and is trying to  *
    * do                                                           *
    * the SSL handshake.                                           *
    *                                                              *
    * The stack trace of the https thread looks like this with SSL *
    * handshake omitted                                            *
    * at                                                           *
    * com/sun/jndi/ldap/pool/Pool.getPooledConnection(Pool.java:14 *
    * 2(Co                                                         *
    * mpiled Code))                                                *
    * at                                                           *
    * com/sun/jndi/ldap/LdapPoolManager.getLdapClient(LdapPoolMana *
    * ger.                                                         *
    * java:341(Compiled Code))                                     *
    * at                                                           *
    * com/sun/jndi/ldap/LdapClient.getInstance(LdapClient.java:161 *
    * 9(Co                                                         *
    * mpiled Code))                                                *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtx.connect(LdapCtx.java:2761(Compiled *
    * Code))                                                       *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtx.<init>(LdapCtx.java:331(Compiled   *
    * Code))                                                       *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtxFactory.getUsingURL(LdapCtxFactory. *
    * java                                                         *
    * :204(Compiled Code))                                         *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtxFactory.getUsingURLs(LdapCtxFactory *
    * .jav                                                         *
    * a:222(Compiled Code))                                        *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtxFactory.getLdapCtxInstance(LdapCtxF *
    * acto                                                         *
    * ry.java:165(Compiled Code))                                  *
    * at                                                           *
    * com/sun/jndi/ldap/LdapCtxFactory.getInitialContext(LdapCtxFa *
    * ctor                                                         *
    * y.java:95(Compiled Code))                                    *
    * at                                                           *
    * javax/naming/spi/NamingManager.getInitialContext(NamingManag *
    * er.j                                                         *
    * ava:695(Compiled Code))                                      *
    * at                                                           *
    * javax/naming/InitialContext.getDefaultInitCtx(InitialContext *
    * .jav                                                         *
    * a:324(Compiled Code))                                        *
    * at                                                           *
    * javax/naming/InitialContext.init(InitialContext.java:255(Com *
    * pile                                                         *
    * d Code))                                                     *
    * at                                                           *
    * javax/naming/InitialContext.<init>(InitialContext.java:227(C *
    * ompi                                                         *
    * led Code))                                                   *
    * at                                                           *
    * javax/naming/directory/InitialDirContext.(InitialDirContext. *
    * java                                                         *
    * :112(Compiled Code))                                         *
    * at                                                           *
    * com/urbancode/security/authentication/ldap/LdapUtil.createCo *
    * ntex                                                         *
    * t(LdapUtil.java:94(Compiled Code))                           *
    * at                                                           *
    * com/urbancode/security/authentication/ldap/LdapUtil.createCo *
    * ntex                                                         *
    * t(LdapUtil.java:67(Compiled Code))                           *
    * at                                                           *
    * com/urbancode/security/authentication/ldap/LdapLoginModule.i *
    * sUse                                                         *
    * rAuthentic(LdapLoginModule.java:181(Compiled Code))          *
    * at                                                           *
    * com/urbancode/security/authentication/ldap/LdapLoginModule.l *
    * ogin                                                         *
    * (LdapLoginModule.java:163(Compiled Code))                    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Fixed in version 7.0.5.2                                     *
    ****************************************************************
    

Problem conclusion

  • Fix is provided in IBM UrbanCode Deploy 7.0.5.2
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH19838

  • Reported component name

    UC DEPLOY

  • Reported component ID

    5725M5400

  • Reported release

    627

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-12-03

  • Closed date

    2020-03-11

  • Last modified date

    2020-03-11

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    UC DEPLOY

  • Fixed component ID

    5725M5400

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS4GSP","label":"IBM UrbanCode Deploy"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"627","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
11 March 2020