Interesting APAR OA22578 NEW FUNCTION (GRS) http://publibz.boulder.ibm.com/zoslib/pdf/OA22578.pdf
PTF List: Release 73J : UA40237 available 08/04/09 (1000 ) Release 730 : UA40235 available 08/04/09 (1000 ) Release 74J : UA40238 available 08/04/09 (1000 ) Release 740 : UA40236 available 08/04/09 (1000 ) **************************************************************** * USERS AFFECTED: All users of hbb7730 and up in a Parallel * * Sysplex and GRS STAR environment * **************************************************************** * PROBLEM DESCRIPTION: See problem summary. * **************************************************************** * RECOMMENDATION: * **************************************************************** Installations that desire to switch from GRSRNL=EXCLUDE to standard RNLs must schedule a sysplex-wide outage in order to perform the migration. GRSRNL=EXCLUDE is a special mode where GRS excludes most SYSTEMS (global) level ENQs to SYSTEM (local) level scope. PROBLEM CONCLUSION: TEMPORARY FIX: COMMENTS: This SPE contains function which provides a migration path from a GRSRNL=EXCLUDE environment to full RNLs without requiring a sysplex-wide outage for certain environments. It will require that only one STAR mode system remains in the sysplex before the function can be used. This function is disabled by default and a DIAGxx setting will be required to enable it. Specifics on enabling this function can be obtained from the IBM Washington Systems Center by sending Nat Stevenson an email at [EMAIL PROTECTED] Please consider these questions prior to contacting the Washington Systems Center: * Are you sharing any resources (DASD) outside of the sysplex? * Do you have a need to perform this migration without a sysplex-wide outage? Extensive planning is required before making any changes to the Resource Name Lists (RNLs) as any errors in their configuration can lead to deadlocks or data integrity errors. Consult the manuals of installed applications for details on how to configure their ENQs. Note that once migrating to the specified RNLs, the only way to move back to GRSRNL=EXCLUDE is a sysplex-wide outage. Additionally note that there is no FORCE option for changing from the specified RNLs to another set of RNLs therefore long held resources could delay such a change indefinitely requiring cancellation of jobs or even a sysplex-wide outage to complete. Consult the GRS Planning Guide for more information on this function. Documentation updates for this APAR can be found in http://publibz.boulder.ibm.com/zoslib/pdf/OA22578.pdf ==================== This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please destroy all paper and electronic copies of the original message. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html