Informix Machine Notes
Hier finden Sie aktuelle Machine-Notes zu Informix-Produkten, die wir für Sie herausgesucht haben.
================================= MACHINE SPECIFIC NOTES FOR IBM Informix Database Server 12.10.FC5 PRODUCT RELEASE ON HEWLETT PACKARD HP-UX Itanium DATE: 09 Mar 2015 ================================= OS Information : Built on HP-UX 11i V3 (aka 11.31) Itanium. System Requirements =================== 1. This product was built on HP-UX 11i V3 (aka 11.31) Itanium using the following compilers: HP C/aC++ B3910B A.06.26 [Apr 12 2011] and with the following packages: Bundle Name Description ----------- ----------- B9007AA C.11.31.06 HP C/aC++ Developer's Bundle FEATURE11i B.11.31.1209.383a Feature Enablement Patches for HP-UX 11i v3, September 2012 2. The UNIX graphical tools provided with this release require X Windows System X11R6 and Motif 2.1 or later runtime libraries. If these tools cannot find the location of the X and Motif shared libraries, the environment variable LD_LIBRARY_PATH may need to be set to include these locations. 3. The High Performance Loader utilities, onpload and ipload, require a minimum of 35 MB of memory and 70 MB of swap space in order to run. 4. IBM Informix Database Server uses the libraries and utilities provided by the IBM Global Security Kit (GSKit) for data encryption and Secure Sockets Layer (SSL) communication. The GSKit is bundled with the server and will be installed on your machine as part of the server installation process. Here are more details on the GSKit: a. The GSKit is also bundled with other IBM products and might already be present on your machine. If GSKit8 is not installed, Informix server will install GSKit in /opt/ibm/gsk8_64 directory on your machine. b. The GSKit installation directory must have 80 MB of free disk space. 5. Expanded Node and Host Name sizes on HP-UX Current version of IBM Informix Database Server does not support the use of Expanded Node and Host Name Sizes. If the tunable kernel parameter expanded_node_host_names is set to 1, and the Database Server is on a system with a node name greater than 8 bytes or host name greater than 64 bytes, then the Database Server will fail to initialize. You may be able to work around the issue by setting the tunable kernel parameter uname_eoverflow to 0. Consult HP documentation for more information on the tunable kernel parameters uname_eoverflow and expanded_node_host_names. Check the following web site for the latest HP Itanium system requirements for IBM Informix Database Server: http://www-01.ibm.com/support/docview.wss?rs=630&uid=swg27013343 System Configuration ==================== 1. Kernel Parameters The values of the kernel parameters that were used for testing this product are given below. These values might need to be tuned depending on the application and availability of system resources. shmseg: 512 shmmni: 512 shmmax: 4398046511104 semmnu: 1400 semmns: 4096 semmni: 4096 nfile: 5000 - The value of the kernel parameter "semmnu" should be set to at least the maximum number of open ipcshm connections, plus the number of semaphore undo structures required by other processes in the system. The recommended value of "semmnu" is between 2K and 4K for larger systems. - The value of the kernel parameter "shmmax" should be set to the maximum allowable on the system. Setting "shmmax" to a high value will prevent the OS from creating multiple shared memory segments which can degrade performance. - This server release is built to take advantage of the Large File Descriptor support provided by HP-UX, which increases the number of simultaneous user connections per server instance from 2000 to 60000. To take advantage of this feature, the following kernel parameters might need to be increased depending on the application: maxfiles_lim - Maximum number of files that can be opened by a process simultaneously. nfile - Maximum number of files that can be opened system-wide. 2. Location of Shared Memory The ONCONFIG variable SHMBASE should be set to the following SHMBASE 0x0L 3. Environment Variables It is recommended that the environment variable INFORMIXSTACKSIZE be set to 256 (the default is 96) if the application involves operations which would require the IBM Informix Database Server to perform recursive database tasks (for example, cascading deletes). Feature Notes (alphabetized by feature) ============= 1. Greater Than 2GB Chunk & File Support Please refer to the man page for fsadm(1M) and fsadm_hfs(1M) for how to enable large file support on your system. This is essential to use the greater than 2 GB Chunk & File Support features for cooked files. 2. High Performance Loader User-defined conversion routines must be provided in a dynamic, shared library called ipldd11a.so. This library is installed in the $INFORMIXDIR/lib directory. You can set the location of this file with the HPL_DYNAMIC_LIB_PATH configuration parameter in file pointed to by PLCONFIG environment variable. For more details, refer the manual "High-Performance Loader User's Guide". This shared library must be compiled in 64-bit mode on HP-UX Itanium. 3. IPv6 Support The Informix database server supports Internet Protocol Version 6 (128 Bit Internet Addresses) as well as IPv4 (32 Bit Addresses). In order for the machine name that is specified in the SQLHOSTS file to resolve to the correct IP address, the name services files on the operating system must be configured correctly. If the machine has an IPv6 address configured, and the listener thread is bound to an IPv6 address, then the name service switch files /etc/nsswitch.conf must be configured to fetch an IPv6 address. Also any local machine settings must be set correctly in the /etc/hosts file. For compatibility with earlier version of Informix client and server products, assign each host name with both an IPv4 address and an IPv6 address. If the listener needs to be bound to an IPv4 address, and the name services resolve the name in the order of the IPv6 address followed by the IPv4 address, then an explicit IPv4 address needs to be put in the host name field of SQLHOSTS file. Client applications should also use the same setting. 4. J/Foundation (Java in the Server) The IBM Runtime Environment, Java(TM) Technology Edition, Version 7.0 release is installed in /view/eo-ids1210-rel-o-hpia64-raiko/vobs/tristarm/sqldist/extend/krakatoa/jre and should be used with the J/Foundation component. A Java user-defined routine (UDR) runs in a Java virtual processor. Use the VPCLASS configuration parameter to specify the number of virtual processors for the server. You configure Java virtual processors in the "Java configuration parameters" section of the onconfig configuration file. The default onconfig.std file is in the /view/eo-ids1210-rel-o-hpia64-raiko/vobs/tristarm/sqldist/etc directory. To develop Java UDRs for the server on this platform, use HP-UX 11i Java Development Kit for the Java 2 Platform Standard Edition 7 or an earlier version according to Java compatibility guidelines. That kit can be downloaded from https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXJDKJRE70. 5. Kernel Asynchronous I/O (KAIO) KAIO is DISABLED by default on this platform. To enable KAIO, set the environment variable KAIOON. KAIOON=1; export KAIOON (for Bourne or Korn Shell) setenv KAIOON 1 (for C Shell) The following is a prerequisite for using KAIO: a. The HP KAIO driver "asyncdsk" is installed and linked into the kernel. b. Ensure that the KAIO driver is up and running. Check if /dev/async exists. If not, follow these steps: 1) su root 2) If using HP hardware/OS redundancy or mirroring, create the async device as follows: /usr/sbin/mknod /dev/async c 101 0 Otherwise, if using IBM Informix mirroring or no hardware/OS mirroring, or no mirroring at all, create the async device as follows: /usr/sbin/mknod /dev/async c 101 4 3) chmod 0666 /dev/async 4) Make sure the following entry exists in the /etc/privgroup file informix MLOCK After adding this entry, execute the following command /sbin/rc1.d/S400set_prvgrp start An environment variable IFMX_HPKAIO_NUM_REQ is provided to specify the number of simultaneous KAIO requests that are processed by the server at one time. The value can be set in the range of 10 to 5000, the default being 1000. If the following error occurs: "KAIO: out of OS resources, errno = %d, pid = %d" consider increasing the value of IFMX_HPKAIO_NUM_REQ. For example: IFMX_HPKAIO_NUM_REQ=2300; export IFMX_HPKAIO_NUM_REQ (for Bourne or Korn Shell) setenv IFMX_HPKAIO_NUM_REQ 2300 (for C Shell) 6. Large Memory Addressability (LMA) IBM Informix LMA provides the ability to support system configurations with greater than 4GB of RAM. Most UNIX systems are limited to 4GB of RAM based on the memory addressing limitations of 32-bit architectures. The values for the following ONCONFIG parameters are increased from 32-bit to 64-bit platform by LMA support: - The maximum number of buffers in BUFFERPOOL is 2147483647. - The maximum of LRU queues for lrus field in BUFFERPOOL is 512. - The DS_TOTAL_MEMORY, which is the total memory available for decision support memory, is only limited by the amount of virtual memory available. The sort memory comes out of the DS_TOTAL_MEMORY memory and hence there is no explicit limit on the amount of sort memory. - The read ahead parameter RA_PAGES is only limited by the number of buffers and therefore can be any value less than 2147483647. The "chunk" write algorithm is not dependent on the amount of buffers or shared memory and can write as many pages in a single I/O as possible. - The maximum size of any shared memory segment is 4398046511104 bytes. - The value for SHMADD is 4294967296 kilobytes. Refer to IBM Informix Administrator's Reference manual for the information about the related configuration parameters setting. 7. MQ Messaging Database Extension The MQ extension provides mechanism for data exchange between Informix server and queues managed by Websphere MQ. Note : MQ extension expects Websphere MQ libraries installed in the default location /opt/mqm. Otherwise create symbolic links from /opt/mqm/lib64 to the 64-bit Websphere MQ libraries. 8. Network Protocols The following protocols and interfaces are supported on this platform: SOCKETS using TCP/IP IPC using stream pipe (implemented using UNIX Domain Sockets) To use SOCKETS with TCP/IP: a. The NETTYPE entry in the ONCONFIG file and the nettype field in the sqlhosts file entry must contain "onsoctcp". b. To enable an IBM Data Server Client to connect to the database Server, the NETTYPE entry in the ONCONFIG file and the protocal value in the sqlhosts file entry must contain "drsoctcp" If a CLI or JCC client wants to connect to the database server through DRDA while supporting SQLI connections, you must add a DBSERVERALIASES entry to the ONCONFIG file that corresponds to the sqlhosts file entry. To use IPC (interprocess communication) with stream pipe: a. The NETTYPE entry in the ONCONFIG file and the nettype field in the sqlhosts file entry must contain "onipcstr". Fast poll is supported with TCP/IP and stream pipe interfaces. To disable fast poll, set the FASTPOLL parameter to 0 in the ONCONFIG file. By default the fast poll is enabled (value is 1). Remote 32-bit applications and tools (example: ESQL/C, 4GL, ISQL) can only connect to the IBM Informix Database Server using the TCP/IP protocol. Local 32-bit applications and tools can connect to the 64-bit server using either the TCP/IP sockets or the IPC stream pipe protocols. The protocol for supporting IBM Informix MaxConnect on this platform is "onsocimc". 9. No Age (Disable Priority Aging) The no aging feature that disables priority aging of CPU virtual processors by the operating system can be activated by setting the noage option of the VPCLASS configuration parameter for the CPU virtual processors. For example, the following ONCONFIG entry specifies that there are 8 CPU VPs, each without aging: VPCLASS cpu,num=8,noage When the noage option is used, all oninit processes will run at priority 180 with SCHED_NOAGE type scheduling. When idle, oninit processes will have the priority of 154, which is the highest idle priority. This priority level will prevent oninit processes from being aged when idle. To override the default priority value for CPU VP class, set the environment variable IFMX_CPUVP_PRIORITY to the desired priority, within limits (154 to 190) before starting the engine. If IFMX_CPUVP_PRIORITY is not within the limits, the priority will be set to the default value of 180. 10. OnLine Backup and Restore (ON-Bar) ON-Bar uses the XBSA interface. Some of the functions invoked by ON-Bar are in a shared library supplied by third party storage management vendors. For ON-Bar to access these functions, set the BAR_BSALIB_PATH parameter in $INFORMIXDIR/etc/$ONCONFIG to the full pathname of the library. This shared library must be compiled in 64-bit mode on HP-UX Itanium. Using $INFORMIXDIR/lib/ibsad001.so as a symbolic link to the library is deprecated and shall be discontinued. Informix Interface for Tivoli Storage Manager (TSM) is supported on this platform. The interface is built with TSM API version 5.3.2. 11. Optical The name of the IBM Informix shared library for Optical on HP-UX is iosm11a.so. This library must be located in $INFORMIXDIR/lib (or must have a link provided in $INFORMIXDIR/lib). This shared library must be compiled in 64-bit mode on HP-UX Itanium. Refer to the "Optical Subsystem Guide" for more information about enabling optical functionality. 12. Pluggable Authentication Module (PAM) PAM functionality is supported on HPUX 11i V3 operating systems. PAM requires the libpam.so library that is supplied by the Operating System vendor. Use of PAM can be enabled or disabled by the system administrator. By default, the Informix server will use the traditional authentication mechanism to avoid changes for the users. The PAM service identifies the PAM module. This PAM module usually is located in /usr/lib/security and its parameters are listed in /etc/pam.conf. 13. Processor Affinity The processor affinity feature, which allows the pinning of a CPU virtual processor to a physical processor in a multi-CPU configuration, is supported on this platform. 14. Secure Sockets Layer IBM Informix Database Server uses the libraries and utilities provided by the IBM Global Security Kit (GSKit) for Secure Sockets Layer (SSL) communication. a. Before uninstalling GSKit, verify that it is not needed on your system. It is possible that software other than Informix Database Server requires GSKit. Uninstalling involves running the swremove command to remove packages as needed. For example, the following command when run as root user removes the GSKit SSL and GSKit Crypt packages: swremove gskssl64 gskcrypt64 b. If you want to restore Secure Sockets Layer capability after you have uninstalled GSKit, see the readme file in $INFORMIXDIR/gskit for how to install GSKit. 15. Simple Password Communications Support Module The name of the IBM Informix shared library for Simple Password CSM on HP-UX is libixspw.so. Features not Supported ====================== 1. TERMINFO 2. OnSNMP Known Defects in this release ============================= For information about known defects in this release, see: Click here for a list Defects Fixed in this release ============================= For information about defects fixed in this release, see: Click here for a list (C) Copyright IBM Corp. 2002, 2015