IBM E16RMLL-I Implementation Guide - Page 226
Setting the log mode
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As with the database, you must extend the recovery log once you have defined a new volume. Example 5-4 shows how to extend the recovery log using the extend log command. Example 5-4 Extending the recovery log tsm: LOCHNESS_SERVER1>extend log 512 wait=yes ANR0984I Process 74 for EXTEND LOG started in the FOREGROUND at 16:21:18. ANR0307I Recovery log extend in progress; 4 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 8 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 12 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 16 megabytes of 512 formatted. ... ANR0307I Recovery log extend in progress; 500 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 504 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 508 megabytes of 512 formatted. ANR0307I Recovery log extend in progress; 512 megabytes of 512 formatted. ANR2268I Recovery log assigned capacity has been extended. ANR0988I Process 74 for EXTEND LOG running in the FOREGROUND processed 536,870,912 bytes with a completion state of SUCCESS at 16:21:29. tsm: LOCHNESS_SERVER1>query log Available Assigned Maximum Space Capacity Extension (MB) (MB) (MB) 1,012 1,012 0 Maximum Reduction (MB) --------- 1,008 Page Size (bytes) ------4,096 Total Usable Pages ------258,560 Used Pages ----153 Pct Util ---0.1 Max. Pct Util ---0.2 Notice that an ANR0307I message is printed for every 4 megabytes of the log volume that is formatted. After the assigned capacity is extended, the output from query log changes accordingly. As we have extended the log to use all the defined volumes, the maximum extension column shows 0 bytes. 5.3 Setting the log mode Use the set logmode command to set the mode for saving recovery log records. The log mode determines how Tivoli Storage Manager saves records in the recovery log and controls the kind of database recovery you can use. The two log modes are NORMAL and ROLLFORWARD. NORMAL In normal mode, Tivoli Storage Manager saves only those transactions needed to restore the database to the point of the last database backup. Tivoli Storage Manager deletes any unnecessary transactions from the 196 IBM Tivoli Storage Manager Implementation Guide
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