II05071: CACHING MASTER CATALOGS IN VLF.

APAR status

• Closed as canceled.

Error description

• There are two types of caching available for catalog records.
  The instorage Catalog (ISC) cache is contained in the Catalog
  Address Space (CAS), and uses private storage.  The Catalog Data
  Space Cache (CDSC) uses VLF facilities.  The cache method used
  is selectable, and can be changed, stopped, or started without
  an IPL.  Catalogs can be totally removed from caching.
  Although you can use either type of catalog cache, you cannot
  use both cache types for a single catalog simultaneously.
  You must decide which cache method to use for each catalog on
  your system.  There is no restriction on which type of cache you
  may use for any catalog, including the master catalog.
  
  Instorage catalog cache uses main storage within the Catalog
  Address Space, and is the default caching method.  Catalogs that
  are not frequently updated use the ISC most effectively.  All
  catalogs (except the master) that use ISC have a limited amount
  of storage dedicated to the cache; this is not controllable by
  the user.  The main storage required to cache the master catalog
  is not limited, so the number of entries in the master catalog
  should be kept to a minimum to prevent excessive storage use.
  We recommend only data set ALIAS entries, USERCATALOG conn-
  ections, and SYS1 data sets be in the master catalog.
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• This is a dummy APAR for information only.      KDL
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels