IBM E16RMLL-I Implementation Guide - Page 230
Database space trigger
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z/OS tip: Database expansion triggering is not fully supported in Tivoli Storage Manager for z/OS. On this platform, the define spacetrigger command does not cause new volumes to be created. It causes the database and recovery log to be extended if space is available. Event logging allows messages to display the amount of new space that is needed to satisfy the space trigger utilization parameter. You can use these messages to initiate automatic expansion or to complete an allocation job (refer to ANRFMT1 and ANRFMT, sample jobs that are located in the ASAMPLIB library). 5.5.1 Database space trigger To define a new space trigger for the database, so that new volumes will be automatically created (Tivoli Storage Manager generates the volume names), issue the define spacetrigger db command as in Example 5-8. The expansionprefix parameter specifies the directory where the volumes will be created. Example 5-8 Defining and querying the database spacetrigger tsm: LOCHNESS_SERVER1>define spacetrigger db fullpct=85 spaceexpansion=25 expansionprefix=c:\tsmdata\dbp\ maximumsize=8192 ANR2274I Data Base Space trigger defined and enabled. tsm: LOCHNESS_SERVER1>query spacetrigger db DB Full Percentage ---------85 DB Space Expansion Percentage ---------- 25 DB Expansion prefix c:\tsmdata\dbp DB Maximum Size (Mega- bytes 8,192 Mirror Mirror Prefix 1 Prefix 2 Use query spacetrigger db to show the current settings. The maximum size we want the database to grow to is 8 GB, as specified in the MAXIMUMSIZE parameter. The system limit for the database is 530000 MB (530 GB). If you do not want to set a particular maximum size, set MAXIMUMSIZE to zero or omit the parameter to disable checking for maximum size. In this case, the database will keep growing to the system limit. If you need to change the trigger definition later, use the update spacetrigger command. 200 IBM Tivoli Storage Manager Implementation Guide
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