Monday, March 28, 2011

Installing Oracle Database 11.2 on IBM AIX 6.1 (Includes HACMP)

SWAP space recommendation from Oracle corp. for Oracle 11g Release 2

If RAM is between 1 GB and 2 GB, SAWP should be 1.5 times the size of RAM
If RAM is between 2 GB and 16 GB, SWAP should be equal to the size of RAM

Monday, March 7, 2011

Log File Sync wait event and COMMIT

Log Writer or LGWR is Oracle instance’s background process which has the responsibility to read from the redo log buffer cache and write into the redo log files. LGWR writes to the redo log file
1) Every 3 seconds
2) When the redo log buffer is one-third full

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