AIX and DST


 
Thread Tools Search this Thread
Operating Systems AIX AIX and DST
# 1  
Old 03-08-2007
AIX and DST

Just a quick last minute thing here.

AIX 5.1. I ran the perl script referenced in the tutorials and found the AIX box is triggering DST on the 14th instead of the 11th. The 5.2 boxes come back with the right answers. The DST patches have been applied (or I'd have Apr 1st instead of the 14th).

Anyone else seeing this?

AIX 5.1
Code:
Enter val - 1173855599
val = 1173855599
  1173855599  Wed 2007-03-14 01:59:59 Standard Time
  1173855600  Wed 2007-03-14 03:00:00 Daylight Saving Time

AIX 5.2
Code:
Enter val - 1173596399
val = 1173596399
  1173596399  Sun 2007-03-11 01:59:59 Standard Time
  1173596400  Sun 2007-03-11 03:00:00 Daylight Saving Time

Carl
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. AIX

Bug in AIX 6.1/7.1 Time Zone DST Change -again

Hi Everyone Just wanted to share with you that IBM AIX is having again problem with Summer Time Shift.. IBM Possible Action Required: System time may not change properly at DST start/end dates on AIX 7.1 and AIX 6.1 - United States For me it means some additional overtimes in the... (0 Replies)
Discussion started by: gito
0 Replies

2. UNIX for Advanced & Expert Users

Handle Autosys with DST Changes

Hi, I have one confusion regarding DST chnages which are going to happen after October. :confused: :confused: I have few jobs on Autosys which run as per Japan Time. they shoudl not be affected by switiching off of DST time. Our autosys instance server is based on UK which is running on... (0 Replies)
Discussion started by: girdharsourabh
0 Replies

3. Shell Programming and Scripting

Determine if given date is in DST

Is there a way to figure out if given date is in DST or in EST? So imagine a shell script is_date_dst.sh sh is_date_dst.sh 2009-03-02 would return 0 and sh is_date_dst.sh 2009-03-22 would return 1 This script should not assume the timezone of the machine it runs on, but only the date passed... (7 Replies)
Discussion started by: asriva
7 Replies

4. Linux

my server is 1 hour behind after DST

Hello, I have linux server which is one hour behind after the DST change last week. I post some information below on the settings. any helpwould be helpful since I am newbie.. $ clock Tue 04 Nov 2008 03:12:26 PM EST -0.785549 seconds $more clock Tue 04 Nov 2008 03:12:26 PM EST... (2 Replies)
Discussion started by: jbdavis02@yahoo
2 Replies

5. What is on Your Mind?

The Switch to DST 2007 --- How Did It Go?

We have been discussing the 2007 changes to DST (Daylight Saving Time) for some time now. We hope that everything went well. But did it? Let us know by voting or by posting your experiences here. The poll will automatically close in 45 days. (6 Replies)
Discussion started by: Perderabo
6 Replies

6. Solaris

DST Patch

How to update DST patch. Whatat are the necessary steps that have to be taken on the servers to update this patch?. (1 Reply)
Discussion started by: sandeepkv
1 Replies

7. UNIX for Dummies Questions & Answers

How to verify DST Update

Hello, Does anyone know how can I verify if the DST update on a SCO Unixware system has been installed successfully? UNIXWARE 7.1.4 MP3 Looking forward to some help, please.... Thanks (8 Replies)
Discussion started by: Yorgy
8 Replies

8. SCO

Dst - V 3.6.3

Hello, Anyone know where I can find the DST updates for SCO Xdesktop 3.6.3? Thanks (0 Replies)
Discussion started by: ddzc
0 Replies

9. SCO

DST script for 5.0.0

I checked SCO's site for DST fix for SCO 5.0.0 and there iis not one available. Can I run a script in the cron to read in and change the time? TiA (2 Replies)
Discussion started by: tbgeek
2 Replies

10. Solaris

DST on Solaris 2.6/7

I have several servers that are outside the country and are running Solaris 6 mainly with a few Solaris 7 boxes here and there. Because of that, we need to schedule time to change the time on March 11th and again in April, October and November. At least until the customer decides it's time to... (3 Replies)
Discussion started by: BOFH
3 Replies
Login or Register to Ask a Question
PERLAIX(1)						 Perl Programmers Reference Guide						PERLAIX(1)

NAME
README.aix - Perl version 5 on IBM Unix (AIX) systems DESCRIPTION
This document describes various features of IBM's Unix operating system (AIX) that will affect how Perl version 5 (hereafter just Perl) is compiled and/or runs. Compiling Perl 5 on AIX When compiling Perl, you must use an ANSI C compiler. AIX does not ship an ANSI compliant C-compiler with AIX by default, but binary builds of gcc for AIX are widely available. At the moment of writing, AIX supports two different native C compilers, for which you have to pay: xlC and vac. If you decide to use either of these two (which is quite a lot easier than using gcc), be sure to upgrade to the latest available patch level. Currently: xlC.C 3.1.4.10 or 3.6.6.0 or 4.0.2.2 or 5.0.2.9 or 6.0.0.3 vac.C 4.4.0.3 or 5.0.2.6 or 6.0.0.1 note that xlC has the OS version in the name as of version 4.0.2.0, so you will find xlC.C for AIX-5.0 as package xlC.aix50.rte 5.0.2.0 or 6.0.0.3 subversions are not the same `latest' on all OS versions. For example, the latest xlC-5 on aix41 is 5.0.2.9, while on aix43, it is 5.0.2.7. Perl can be compiled with either IBM's ANSI C compiler or with gcc. The former is recommended, as not only can it compile Perl with no difficulty, but also can take advantage of features listed later that require the use of IBM compiler-specific command-line flags. The IBM's compiler patch levels 5.0.0.0 and 5.0.1.0 have compiler optimization bugs that affect compiling perl.c and regcomp.c, respec- tively. If Perl's configuration detects those compiler patch levels, optimization is turned off for the said source code files. Upgrading to at least 5.0.2.0 is recommended. If you decide to use gcc, make sure your installation is recent and complete, and be sure to read the Perl README file for more gcc-spe- cific details. Please report any hoops you had to jump through to the development team. OS level Before installing the patches to the IBM C-compiler you need to know the level of patching for the Operating System. IBM's command 'oslevel' will show the base, but is not always complete (in this example oslevel shows 4.3.NULL, whereas the system might run most of 4.3.THREE): # oslevel 4.3.0.0 # lslpp -l | grep 'bos.rte ' bos.rte 4.3.3.75 COMMITTED Base Operating System Runtime bos.rte 4.3.2.0 COMMITTED Base Operating System Runtime # The same might happen to AIX 5.1 or other OS levels. As a side note, perl cannot be built without bos.adt.syscalls and bos.adt.libm installed # lslpp -l | egrep "syscalls|libm" bos.adt.libm 5.1.0.25 COMMITTED Base Application Development bos.adt.syscalls 5.1.0.36 COMMITTED System Calls Application # Building Dynamic Extensions on AIX AIX supports dynamically loadable objects as well as shared libraries. Shared libraries by convention end with the suffix .a, which is a bit misleading, as an archive can contain static as well as dynamic members. For perl dynamically loaded objects we use the .so suffix also used on many other platforms. Note that starting from Perl 5.7.2 (and consequently 5.8.0) and AIX 4.3 or newer Perl uses the AIX native dynamic loading interface in the so called runtime linking mode instead of the emulated interface that was used in Perl releases 5.6.1 and earlier or, for AIX releases 4.2 and earlier. This change does break backward compatibility with compiled modules from earlier perl releases. The change was made to make Perl more compliant with other applications like Apache/mod_perl which are using the AIX native interface. This change also enables the use of C++ code with static constructors and destructors in perl extensions, which was not possible using the emulated interface. The IBM ANSI C Compiler All defaults for Configure can be used. If you've chosen to use vac 4, be sure to run 4.4.0.3. Older versions will turn up nasty later on. For vac 5 be sure to run at least 5.0.1.0, but vac 5.0.2.6 or up is highly recommended. Note that since IBM has removed vac 5.0.2.1 through 5.0.2.5 from the software depot, these versions should be considered obsolete. Here's a brief lead of how to upgrade the compiler to the latest level. Of course this is subject to changes. You can only upgrade ver- sions from ftp-available updates if the first three digit groups are the same (in where you can skip intermediate unlike the patches in the developer snapshots of perl), or to one version up where the `base' is available. In other words, the AIX compiler patches are cumulative. vac.C.4.4.0.1 => vac.C.4.4.0.3 is OK (vac.C.4.4.0.2 not needed) xlC.C.3.1.3.3 => xlC.C.3.1.4.10 is NOT OK (xlC.C.3.1.4.0 is not available) # ftp ftp.software.ibm.com Connected to service.boulder.ibm.com. : welcome message ... Name (ftp.software.ibm.com:merijn): anonymous 331 Guest login ok, send your complete e-mail address as password. Password: ... accepted login stuff ftp> cd /aix/fixes/v4/ ftp> dir other other.ll output to local-file: other.ll? y 200 PORT command successful. 150 Opening ASCII mode data connection for /bin/ls. 226 Transfer complete. ftp> dir xlc xlc.ll output to local-file: xlc.ll? y 200 PORT command successful. 150 Opening ASCII mode data connection for /bin/ls. 226 Transfer complete. ftp> bye ... goodbye messages # ls -l *.ll -rw-rw-rw- 1 merijn system 1169432 Nov 2 17:29 other.ll -rw-rw-rw- 1 merijn system 29170 Nov 2 17:29 xlc.ll On AIX 4.2 using xlC, we continue: # lslpp -l | fgrep 'xlC.C ' xlC.C 3.1.4.9 COMMITTED C for AIX Compiler xlC.C 3.1.4.0 COMMITTED C for AIX Compiler # grep 'xlC.C.3.1.4.*.bff' xlc.ll -rw-r--r-- 1 45776101 1 6286336 Jul 22 1996 xlC.C.3.1.4.1.bff -rw-rw-r-- 1 45776101 1 6173696 Aug 24 1998 xlC.C.3.1.4.10.bff -rw-r--r-- 1 45776101 1 6319104 Aug 14 1996 xlC.C.3.1.4.2.bff -rw-r--r-- 1 45776101 1 6316032 Oct 21 1996 xlC.C.3.1.4.3.bff -rw-r--r-- 1 45776101 1 6315008 Dec 20 1996 xlC.C.3.1.4.4.bff -rw-rw-r-- 1 45776101 1 6178816 Mar 28 1997 xlC.C.3.1.4.5.bff -rw-rw-r-- 1 45776101 1 6188032 May 22 1997 xlC.C.3.1.4.6.bff -rw-rw-r-- 1 45776101 1 6191104 Sep 5 1997 xlC.C.3.1.4.7.bff -rw-rw-r-- 1 45776101 1 6185984 Jan 13 1998 xlC.C.3.1.4.8.bff -rw-rw-r-- 1 45776101 1 6169600 May 27 1998 xlC.C.3.1.4.9.bff # wget ftp://ftp.software.ibm.com/aix/fixes/v4/xlc/xlC.C.3.1.4.10.bff # On AIX 4.3 using vac, we continue: # lslpp -l | grep 'vac.C ' vac.C 5.0.2.2 COMMITTED C for AIX Compiler vac.C 5.0.2.0 COMMITTED C for AIX Compiler # grep 'vac.C.5.0.2.*.bff' other.ll -rw-rw-r-- 1 45776101 1 13592576 Apr 16 2001 vac.C.5.0.2.0.bff -rw-rw-r-- 1 45776101 1 14133248 Apr 9 2002 vac.C.5.0.2.3.bff -rw-rw-r-- 1 45776101 1 14173184 May 20 2002 vac.C.5.0.2.4.bff -rw-rw-r-- 1 45776101 1 14192640 Nov 22 2002 vac.C.5.0.2.6.bff # wget ftp://ftp.software.ibm.com/aix/fixes/v4/other/vac.C.5.0.2.6.bff # Likewise on all other OS levels. Then execute the following command, and fill in its choices # smit install_update -> Install and Update from LATEST Available Software * INPUT device / directory for software [ vac.C.5.0.2.6.bff ] [ OK ] [ OK ] Follow the messages ... and you're done. If you like a more web-like approach, a good start point can be http://www14.software.ibm.com/webapp/download/downloadaz.jsp and click "C for AIX", and follow the instructions. Using GNU's gcc for building perl Using gcc-3.x (tested with 3.0.4, 3.1, and 3.2) now works out of the box, as do recent gcc-2.9 builds available directly from IBM as part of their Linux compatibility packages, available here: http://www.ibm.com/servers/aix/products/aixos/linux/ Using Large Files with Perl Should yield no problems. Threaded Perl Threads seem to work OK, though at the moment not all tests pass when threads are used in combination with 64bit configurations. 64-bit Perl If your AIX is installed with 64-bit support, you can expect 64bit configurations to work. In combination with threads some tests might still fail. AIX 4.2 and extensions using C++ with statics In AIX 4.2 Perl extensions that use C++ functions that use statics may have problems in that the statics are not getting initialized. In newer AIX releases this has been solved by linking Perl with the libC_r library, but unfortunately in AIX 4.2 the said library has an obscure bug where the various functions related to time (such as time() and gettimeofday()) return broken values, and therefore in AIX 4.2 Perl is not linked against the libC_r. AUTHOR
H.Merijn Brand <h.m.brand@hccnet.nl> DATE
Version 0.0.6: 23 Dec 2002 perl v5.8.0 2003-02-18 PERLAIX(1)