Hello Mark, during restart the archive log is read from the last savepoint until the end of archive log is reached. The log entries of each transaction found there are copied into a page chain per transaction. These transactions rebuilt and redone at restart time are called "redo transaction"
Because the page chains consume permanent pages in the data volumes there must be space enough for them during the restart. In online state of the database, the RESERVED_REDO_SIZE gives an amount of pages which cannot be used for other permanent data pages. The default value for this parameter is 0 what means 1/3 of archive log size. If you configured your database with an extra large archive log size this rule might be wrong. In this case you can choose an explicite value. Bye, Uwe > -----Original Message----- > From: Mark Thomas [mailto:[EMAIL PROTECTED]] > Sent: Dienstag, 19. M�rz 2002 20:06 > To: SAPDB general > Subject: What is a redo transaction? > > Hello, all. > > Can someone please tell me what a redo transaction is? (i.e. that which > is governed by RESERVED_REDO_SIZE.) > > Thanks. > > -- > Mark Thomas > United Drugs > <[EMAIL PROTECTED]> > _______________________________________________ sapdb.general mailing list [EMAIL PROTECTED] http://listserv.sap.com/mailman/listinfo/sapdb.general
