SAP Note 13655 - SAPDBA: Long runtimes: Exp./imp./reorganization

Component : Database Administration with Oracle -

Solution : https://service.sap.com/sap/support/notes/13655 (SAP Service marketplace login required)

Summary :
Long runtimes (>10 hours) may occur when exporting or importing tables (e.g., ATAB, APQD) with SAPDBA. Key issues include the absence of expst/impst, presence of LONG columns with "commit = Y", data mirroring, and ARCHIVELOG mode. Solutions involve using single task versions expst/impst from ORACLE if available, modifying SAPDBA import scripts to "commit=N", handling rollback segments, and selectively placing large tables in separate tablespaces. Data mirroring should ideally not increase reorganization time significantly, and proactive measures should be taken to manage ARCHIVELOG space and prevent archiver stack issues.

Key words :
sqldba> shutdown          sqldba> startup mount          sqldba> alter database noarchivelog, scripts $oracle_home/sapreorg/<timestamp>/exp<tsp>, cd $oracle_home/bin      touch expst impst, sqldba> shutdown          sqldba> startup mount, sqldba> connect internal          sqldba> startup, touch sqldbast       touch sqlldrst      cd, sqldba> shutdown          sqldba> exit          sapdba, sqldba> alter system switch logfile, sqldba> alter database open, sqldba> alter database archivelog

Related Notes :

130345Singletask not longer supported on Oracle8
88081export import sqlldr singletask in Oracle 7.3.3
60233Oracle rollback segments, more information.
43487Collective note: SAPDBA - Reorgnztn/Space/Structure