Preventive Service Planning
Abstract
These recommendations are based upon your system already having installed the most current Cumulative PTF Package, HIPER PTF Group, and Database PTF Group.
Content
The IBM i Global Support Center recommends installing the group and individual fixes listed below for corrective service and preventative maintenance. If a problem persists after the recommended fixes have been installed, the Rochester Support Center can more efficiently diagnose the problem and additional fixes may be recommended.
For further information or to order these PTFs, please follow this link:
<Order these Recommended Fixes>
| Important Note: By clicking the link above, an order for all PTFs on the immediate list below will be placed through Fix Central. You will not need to type the individual PTF numbers. You will have the opportunity to deselect any PTFs you do not want in the order before continuing with the order process. |
| Note: Click on the PTF number to review the PTF cover letter. The PTF cover letter contains a description of what the PTF resolves, information about the PTF(s) it supersedes, if any, and any special instructions that need to be performed to apply the PTF. | ||||||||||||
| Date Added to List (MM/DD/YYYY) |
Fix | Licensed Program Product |
Cumulative Package |
Description | ||||||||
| 03/18/2020 | MF65459 | 5770999 | None | Unsolicited data is not being validated properly in some cases causing the session to be closed and a LIC LOG 0700 0051 to be generated. (MA47340) | ||||||||
| 06/01/2018 | MF64462 | 5770999 | None | Telnet Server will handle unexpected Telnet Terminal Type negotiation after Device Name Collision which caused Telnet Server exception and 2C00 1496 VLOG and the IP Interface may quit responding. (MA46802) | ||||||||
| VTAPI virtual device application errors errors and subsequent failure may cause other sessions to be disconnected. (MA45993) | ||||||||||||
| 11/30/2017 | SI65496 | 5770SS1 | None | TRCTCPAPP *TELNET/*VTAPI enhancement to accomodate 4096 traced jobs and avoid error MCH3802 when the previous limit of 200 jobs was reached. (SE67813) | ||||||||
Below is a list of Fixes on previous Cumulative PTF Packages. If the IBM i OS System is not on the latest Cumulative PTF Package, this list can be used to determine what Telnet Recommended Fixes are not on your current Cumulative PTF Package level.
| Note: Click on the PTF number to review the PTF cover letter. The PTF cover letter contains a description of what the PTF resolves, information about the PTF(s) it supersedes, if any, and any special instructions that need to be performed to apply the PTF. | ||||
| Date Added to List (MM/DD/YYYY) |
Fix | Licensed Program Product |
Cumulative Package |
Description |
| 11/30/2017 | MF62916 | 5770999 | C6320710 | TLS Alert records attempted to be sent during underlying TCP communication outage are leaked causing temp storage growth. (MA45978) |
| 05/02/2016 | MF61847 | 5770999 | C6320710 | Failed SSL Telnet connection, perhaps from a non-configured or mis-configured client may cause the Telnet server to not process any new connections. VLOG 1000220A posted. Ending and restarting Telnet will recover most Telnet server functionality, but an IPL may be required to get to fully normal function. (MA45526) |
| 05/02/2016 | MF61928 | 5770999 | C6320710 | Telnet not logging SSL Connection errors in QTVTELNET joblog (MA45567) |
| Telnet Server may not validate provided credentials correctly when the client is attempting to bypass the signon screen resulting in the signon screen being displayed or profile to be disabled. (MA45220) | ||||
| Telnet Server LIC Task abends with VLOG 0700 0050 being posted. Up to 20 users would be disconnected. (MA45225) | ||||
| ENDTCPSVR *TELNET does not close all Active Socket connections. (MA45120) | ||||
| MSG CPF87D3 and VLOG 0700 0050 when Virtual Terminal APIs are used with Teraspace buffers. (MA44974) | ||||
| 11/18/2015 | SI58052 | 5770SS1 | C6120710 | Telnet Exit programs report the server local port number incorrectly. (SE62921) |
| 12/06/2015 | MF60447 | 5770999 | C5317710 | Telnet Server LIC Task processing SSL Handshake fails causing all new SSL Telnet connections to not be processed. VLOG 0700 0054 notes the task failur. (MA44762 |
| When multiple clients are connecting at the same time on systems with sufficient parallel processing capacity the Telnet Environment options that are provided by the client may be corrupted when processing resulting in incorrect devices and failed automatic signon amongst other symptoms. MSG TCP2556 will be posted in Telnet Server QTVDEVICE joblog. (MA44752) | ||||
| 03/27/2015 | MF59798 | 5770999 | C5142710 | APPC Remote Device Information may not be cleared when device is used by Telnet. (MA44385) |
| 03/27/2015 | MF59557 | 5770999 | C5142710 | Kerberos ticket not passed correctly when the Telnet server is configured for SSL requiring Client Authentication. (MA44259) Important Note: This PTF requires Co-Req SI55594 or a supersede. If both PTFs are not applied some Telnet functions may not work correctly, including Bypass Signon, Session Disconnects, and Printer Device allocation. |
| Interactive Jobs using status messages may pause for several minutes and then fail with CPF5106 RC6138 "Error on Device - Cannot obtain send state." This is most often seen in jobs with longer running queries. (MA44276) | ||||
| Telnet sessions from non-5250 Telnet clients are aborted after first character is Entered and Echoed. (MA44243) | ||||
| Telnet sessions may be dropped for no apparent valid reason. VLOG 0701 005D will be generated. (MA43764) | ||||
| 03/27/2015 | SI55958 | 5770SS1 | C5142710 | Telnet allocated Device may display local server IP address instead of remote client IP address. (SE61152) |
| 03/27/2015 | SI55594 | 5770SS1 | C5142710 | Kerberos ticket not passed correctly when the Telnet server is configured for SSL requiring Client Authentication. (SE60873) Important Note: This PTF requires Co-Req MF59557 or a supersede. If both PTFs are not applied some Telnet functions may not work correctly, including Bypass Signon, Session Disconnects, and Printer Device allocation. |
| QTVSINIT receives invalid CPF2499 and then CPF87D3 when Virtual Terminal API application request an in use Device Description instead of the expected CPF87D7 message. (SE60663) | ||||
| 12/17/2014 | SI54388 | 5770SS1 | C4283710 | Errors CPF87D3 and MCH1210 in QTVDEVICE joblog when QAUTOVRT value is exceeded, and Virtual Terminal API application termination after applying PTF SI54167. (SE59937) |
| 11/21/2013 | MF57402 | 5770999 | C4143710 | In certain circumstances when a network connection submits unexpected data to a Telnet connection, usually during initial connection negotiation, the telnet server may stop processing new connection attempts. Already established sessions will continue to work. VLOG 0701 005a is posted and NETSTAT may show numerous telnet connection sin a CLOSED state. An IPL is required to recover. (MA42978) |
| New SSL Telnet connections fail. QTVTELNET joblog shows message CPDBCA9. (MA42715) | ||||
| Telnet startup failure following IPL or restricted state. A Telnet listener (SSL or non-SSL) was attempted to be activated before the IP stack (IPV4 or IPV6) was fully active. This PTF will add retry logic, but the system processes used to activate TCP and TCP Servers should be reviewed. (MA42567) | ||||
| 01/14/2014 | MF57131 | 5770999 | C3298710 | Device selection problem where mutex needed for device selection could not be created. Message CPD34D2. Issues may be seen from Telnet, Passthru, Webfacing Server or any Virtual Terminal API (VTAPI) application. The symptoms may range from an occassional message in the job log with no obvious external symptoms to no longer being able to start new sessions. CPDB39B message may also be seen. (MA42773) |
| 07/02/2013 | SI50363 | 5770SS1 | C3298710 | QTVDEVICE Telnet Server job posting MCH1202. This is being caused by a telnet client requesting a device name that already exists, but not as a VRTDSP or VRTPRT type. (SE55977) |
| Device selection problem where mutex needed for device selection could not be created. Message CPD34D2. Issues may be seen from Telnet, Passthru, Webfacing Server or any Virtual Terminal API (VTAPI) application. The symptoms may range from an occassional message in the job log with no obvious external symptoms to no longer being able to start new sessions. (SE54729) |
||||
| Changing QAUTOVRT from *REGFAC continues to use device and controller naming convention specified by the exit program. (SE54276) | ||||
| QAUTOVRT numerical value increase may not be processed correctly and new devices will not be able to be created until QAUTOVRT is set to *NOMAX or the system is IPLed. (SE54339) | ||||
| 02/25/2013 | SI48659 | 5770SS1 | C3298710 | SSL v1.2 support activation for Telnet Server in Digital Certificate Manager. If this PTF is not applied when the MF99006 part of Technology Refresh 6 is applied the SSL Telnet server may not start following an IPL. (SE54028) |
| 12/18/2012 | MF56377 | 5770999 | C3037710 | Timing window changed for device release processing to prevent F/#MSTRTNS FLDS/IXPTN80 FFDC creation. (MA42467) |
| 12/18/2012 | SI48918 | 5770SS1 | C3037710 | Change message posted in QTVTELNET job startup when there is no SSL Key Store in DCM from TCP84C6 ERRNO 3021 to CPDBCB3 "SSL is not available for use". (SE54296) |
| 05/30/2012 | SI46687 | 5770SS1 | C2279710 | Improve reliability of Telnet startup when two Telnet start commands occur at the same time. (SE52141) |
| 06/22/2012 | MF55751 | 5770999 | C2279710 | If Interactive SBS is ended while Telnet is Active, or they are both ended at the same time, for example, with an ENDSBS *ALL *IMMED, Telnet and parts of the TCP/IP Stack may go unresponsive during the shutdown or restart process of Telnet or the Interactive SBS. Virtual Devices may also be damaged. (MA41353) |
| Abnormally connected Telnet session may damage device description preventing further connections that try to access that device. (MA41906) | ||||
| Telnet Server Seize may occur, predominantly seen by all QTVDEVICE jobs hanging in RUN, or END status, requiring and IPL to recover. (MA42123) | ||||
| 10/08/2012 | SI47808 | 5770SS1 | C2279710 | Telnet and Passthru device selection may encounter a situation where the mutex needed to select a new device cannot be obtained; therefore, no new sessions. (SE51921) |
| Device selection mutexs are not being closed when no longer needed, therefore a large number of mutexs may be retained. This causes the Telnet Server job to take a very long time to end. (SE53092) | ||||
| 03/15/2012 | SI46188 | 5770SS1 | C2115710 | Telnet Server Shutdown and Startup Synchronization Improvements (SE50142 & SE51288) Note: This PTF, or it's previous version SI45271, requires 5770TC1 PTF SI46189, previous version SI45272, to be applied at the same time. If this is not done the Telnet server QTVDEVICE jobs will fail to start with a TCP2548 error. |
| 03/15/2012 | SI46189 | 5770TC1 | C2115710 | Telnet Server Shutdown and Startup Synchronization Improvements (SE50143 & SE51299) Note: This PTF, or its previous version SI45272, requires 5770SS1 PTF SI46188, previous version SI45271, to be applied at the same time. If this is not done, the Telnet server QTVDEVICE jobs will fail to start with a TCP2548 error. |
| 06/13/2011 | SI42709 | 5770SS1 | C1270710 | Reuse Virtual QPADEV* Device fails, Excessive new QPADEV* device creation (SE46903) |
| 07/15/2011 | MF53626 | 5770999 | C1270710 | Telnet Sessions Randomly disconnect due to an SSL Sockets failure, causing device damage (MA41129) |
| 07/29/2011 | MF53665 | 5770999 | C1270710 | Abnormal, incorrect Telnet client datastream repeatedly sent to Telnet Server may cause memory leak (MA40749 & MA41001). |
| VTAPI Application Unpredictable Hangs (MA41166) | ||||
| TELNET GLOBAL Heap Pointer will be reset when Telnet is Ended/Restarted. This will avoid an IPL if that pointer gets corrupted. (MA40901) (V6R1M1) | ||||
| 07/29/2011 | SI44259 | 5761SS1 | C1270710 | Telnet server changed back to previous behavior where any device attached to a QPACTL* VWS Controller can be used for a generic workstation name request, regardless of the device name (SE47850). Note: This PTF requires Co-Req SI42627 that must be installed DELAYED using an IPL. |
| QTVDEVICE job looping on MCH3402 message (SE48874) | ||||
| 07/29/2011 | SI43911 | 5770SS1 | C1270710 | Telnet may inconsistently abandon devices in the LUDLIST after ENDTCPSVR *TELNET causing devices to be incorrectly reported as in use (SE47853) |
| Telnet Server will not start. QTVTELNET job will list a MCH3601 f/QTVTNCSH (SE48447) | ||||
| 09/22/2011 | MF53300 | 5770999 | C1270710 | No New Telnet sessions. VLOGs 0700 0072 logged for job QTVTELNET. (MA40946) |
| 11/19/2010 | MF50886 | 5770999 | C1116710 | Unnecessary VLOGs created when Telnet is ended when there are many active sessions. Causes delay ending and restarting Telnet (MA39568). |
| STREAM I/O VLOG 1F00 0008 causes all Telnet sessions to disconnect and all QTVDEVICE jobs to end (MA39748). | ||||
| Interaction between NETSTAT and Telnet can cause Telnet deadlock preventing all new Telnet connections. An IPL is required to recover (MA39930). | ||||
| 10/01/2010 | SI41260 | 5770TC1 | C1116710 | If multiple attempts to start Telnet happen at the same time, Telnet will not be functional requiring an IPL to recover (SE44901). |
| SSL Telnet client connections coming into the system while Telnet is starting can cause SSL Telnet server to be non-functional (SE44901). | ||||
| MCH5802 "Lock operation for object QTVDEVMGR not satisfied" in QTVDEVICE Telnet joblog when Telnet is ended (SE45036). | ||||
| 01/22/2011 | SI42405 | 5770SS1 | C1116710 | If multiple attempts to start Telnet happen at the same time, Telnet will not be functional requiring an IPL to recover (SE44900). |
| SSL Telnet client connections coming into the system while Telnet is starting can cause SSL Telnet server to be non-functional (SE44900). | ||||
| MCH5802 "Lock operation for object QTVDEVMGR not satisfied" in QTVDEVICE Telnet joblog when Telnet is ended (SE45037). | ||||
| Telnet Bypass Signon occasionally fails (SE45668). | ||||
| Telnet entries in security audit journal from failed signon may report incorrect IP address (SE46157). | ||||
| Telnet shutdown may cause soft virtual device damage (SE46499). | ||||
| 01/22/2011 | SI42134 | 5770SS1 | C1116710 | Telnet may select a lower function device type then requested. Can result in a request for wide screen capable, getting a narrow screen, or a request for a full color display getting a monochrome one (SE44052). |
| Temporary storage used by Telnet device selection not deleted (SE45080). | ||||
| Excessive QPADEV* generic virtual device creation and high. QTVDEVICE job CPU usage (SE45218). | ||||
| MCH3601 error during deletion of virtual controllers used by Telnet and Passthrough. This can prevent new controllers from being automatically created (SE45804). | ||||
| Virtual device associated printer device not cleared out when appropriate (SE46159). | ||||
| 04/28/2010 | SI38420 | 5770SS1 | C0229710 | Unable to get new Telnet sessions. |
| Tracing enhancements (SE41588). | ||||
| 05/28/2010 | MF50151 | 5770999 | C0229710 | Telnet may deadlock and stop communications (MA39496). |
| 06/09/10 | SI39954 | 5770SS1 | C0229710 | Unable to get new Telnet sessions (SE41413). |
| Device Selection issues including QTVDEVICE CPU Usage and only 1 QPACTL* controller being used (SE43508 and SE43511). | ||||
| 04/08/2010 | SI36976 | 5770SS1 | C0096710 | Telnet Printers connect, but the Print Writer is not started (SE39955). |
| 04/08/2010 | SI36974 | 5770SS1 | C0096710 | QTVDEVICE Jobs Abend resulting in 0700 0050 VLOGs. (SE39947). |
| 04/14/2010 | MF48794 | 5770999 | C0096710 | SSL and non-SSL Telnet connection issues (MA38856). |
| 04/14/2010 | MF48843 | 5770999 | C0096710 | SSL and non-SSL Telnet connection issues (MA38876). |
| 04/16/2010 | MF49142 | 5770999 | C0096710 | Telnet connection will close when only receiving 1 byte of data (MA39040). |
| 04/22/2010 | MF48300 | 5770999 | C0096710 | QTVDEVICE Jobs Abend resulting in 0700 0050 VLOGs. (MA38537). |
| SSL Connections hang prior to SSL Handshake completing. (MA38290). | ||||
| 04/22/2010 | MF48814 | 5770999 | C0096710 | SSL and non-SSL Telnet connection issues (MA38793). |
Important Information
None
Installation / Upgrade Considerations
For special instructions, review the cover letter for each PTF. You can review the specific cover letter by clicking on the PTF number in the above table, or search for PTF cover letters using the following link: < PTF Cover Letter Search >
For more information on ordering PTFs through Fix Central, you should refer to document N1019058, Fix Central Step-by-Step Order Instructions.
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Document Information
Modified date:
18 March 2020
UID
nas8N1021618