chain.sql
2022/5/24 2:19:58
本文主要是介绍chain.sql,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
accept owner prompt " Enter the schema name to check for Row Chaining (RETURN for All): " prompt prompt accept table prompt " Enter the table name to check (RETURN for All tables owned by &owner): " prompt prompt set head off serverout on term on feed off veri off echo off !clear prompt declare v_owner varchar2(30); v_table varchar2(30); v_chains number; v_rows number; v_count number := 0; sql_stmt varchar2(100); dynamicCursor INTEGER; dummy INTEGER; cursor chains is select count(*) from chained_rows; cursor analyze is select owner, table_name from sys.dba_tables where owner like upper('%&owner%') and table_name like upper('%&table%') order by table_name; begin dbms_output.enable(64000); open analyze; fetch analyze into v_owner, v_table; while analyze%FOUND loop dynamicCursor := dbms_sql.open_cursor; sql_stmt := 'analyze table '||v_owner||'.'||v_table||' list chained rows into chained_rows'; dbms_sql.parse(dynamicCursor, sql_stmt, dbms_sql.native); dummy := dbms_sql.execute(dynamicCursor); dbms_sql.close_cursor(dynamicCursor); open chains; fetch chains into v_chains; if (v_chains != 0) then if (v_count = 0) then dbms_output.put_line(CHR(9)||CHR(9)||CHR(9)||'<<<<< Chained Rows Found >>>>>'); v_count := 1; end if; dynamicCursor := dbms_sql.open_cursor; sql_stmt := 'Select count(*) v_rows'||' From '||v_owner||'.'||v_table; dbms_sql.parse(dynamicCursor, sql_stmt, dbms_sql.native); dbms_sql.DEFINE_COLUMN(dynamicCursor, 1, v_rows); dummy := dbms_sql.execute(dynamicCursor); dummy := dbms_sql.fetch_rows(dynamicCursor); dbms_sql.COLUMN_VALUE(dynamicCursor, 1, v_rows); dbms_sql.close_cursor(dynamicCursor); dbms_output.put_line(v_owner||'.'||v_table); dbms_output.put_line(CHR(9)||'---> Has '||v_chains||' Chained Rows and '||v_rows||' Num_Rows in it!'); dynamicCursor := dbms_sql.open_cursor; sql_stmt := 'truncate table chained_rows'; dbms_sql.parse(dynamicCursor, sql_stmt, dbms_sql.native); dummy := dbms_sql.execute(dynamicCursor); dbms_sql.close_cursor(dynamicCursor); v_chains := 0; end if; close chains; fetch analyze into v_owner, v_table; end loop; if (v_count = 0) then dbms_output.put_line('No Chained Rows found in the '||v_owner||' owned Tables!'); end if; close analyze; end; / set feed on head on prompt
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