z/OS DFSMS OAM Planning, Installation, and Storage Administration Guide for Object Support
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Data set name qualifiers

z/OS DFSMS OAM Planning, Installation, and Storage Administration Guide for Object Support
SC23-6866-00

Table 1 provides descriptions and data set name qualifiers for each of the required data sets in the database.

Table 1. Data set name qualifiers and descriptions for each
Qualifier Description
OSMDTS Object directory table; information about the object
OSMLBTS LOB base table; LOB specific information about the object.
OTLOBX1 LOB base table index 1; index (collection ID/object name) into the LOB base table
OSMLATS LOB auxiliary table; storage area for objects designated as LOB
OTLOBAX1 LOB auxiliary table index1; index (ROWID) into the LOB auxiliary table to navigate to LOB data
OBJDIRX1 Object directory index 1; cluster index (odcreats) into the object directory table
OBJDIRX2 Object directory index 2; index (pending action date) into the object directory table
OBJDIRX3 Object directory index 3; index (collection name/object name) into the object directory table
OSMOTS04 4 KB small object table; storage area for objects with a length less than or equal to 3980 bytes (small objects)
OBJT04X1 4 KB object table index 1; index (collection ID/object name) into the 4 KB object table
OSMOTS32 32 KB large object table; storage area for objects with a length greater than 3980 bytes and less than or equal to 256 MB (268,435,456 bytes).
OBJT32X1 32 KB object table index 1; index (collection ID/object name/segment name) into the 32 KB object table
Note: Kilobytes = 1 024 bytes.

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