Jake, First it is always helpful to supply a full description of your issue and your z/OS Level.
If you are talking about non LINKLST libraries - No If you are talking about Linklst Libraries - Yes and the following applies. Second, by going to the z/OS MVS Init and Tuning Reference manual, you should have been able to find your answers. 1) The number of data sets you can concatenate to form the LNKLST concatenation is limited by the total number of DASD extents the data sets will occupy. The total number of extents must not exceed 255. A partitioned data set extended (PDSE) counts as one extent. The system concatenates as many of the data sets as possible until the limit of 255 extents is reached. The system ignores the remaining data sets. When the limit has been exceeded, the system writes error message IEA328E to the operator's console. This message is issued whether the concatenation is defined by LNKLSTxx or by PROGxx. 2) When using PDSs and PDSEs, you can allocate LNKLST data sets with secondary extents. However, IBM® suggests that PDSs in the LNKLST be allocated with only primary extents, for two reasons. First, this makes it easier to stay within the 255-extent limit for an active LNKLST concatenation. without having to reallocate data sets in fewer extents initially. Second, if a PDS will be updated while in the link list, it can be extended if it has been allocated using secondary space. This can cause members to be placed in extents that did not exist when the LNKLST concatenation was opened. Any attempt to access a member in a new extent causes the requesting program to abend with a logical I/O error. This recommendation does not apply to PDSEs. If a LNKLST PDS has expanded into a secondary extent since the most recent IPL you can IPL or take the appropriate steps to redo the LINKLST An internet search and reading manuals can be your friends. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Jake anderson > Sent: Saturday, August 09, 2014 11:26 PM > To: [email protected] > Subject: Extents more than One for load modules library > > Hi All, > > I see some of a product load modules have extents more than 1 like 2 and 4. > I still the product runs with no error and abend. Are there any impact to the > product if > the libraries are more than 1 ? > > Could you please suggest me if it is good to run the product with extents > more than > 1. > > Jake > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
