This script calculates the average row size for all tables in a schema. It generates a script (getAvgCol.sql) from USER_TABLES and then runs it. The following type of SELECT is generated for each table in USER_TABLES: SELECT round(avg(nvl(vsize(COL1),0)) + round(avg(nvl(vsize(COL2),0)) + ... + round(avg(nvl(vsize(COLn),0)) Where n=# of cols. on the table Tables with LONG and LOB columns will not report row size properly. Also tables with object types will throw the following error and will also not report row size properly: ORA-00932: inconsistent datatypes ============= Sample Output ============= ACCOUNTS 6 ACCTS 39 ACCT_ADDRS 38 BAD_DATA 116 BASE1 6 BONUS CEG1 11 CHESS_SAVE CHESS_SAVE_PLAYER CITIES 36 COMPANY_SUMMARY 60 CR_FILES 113
Script:
exit
本文转自maclean_007 51CTO博客，原文链接:
http://blog.51cto.com/maclean/1276697
