今天在使用dbms_sqltune.create_stgtab_sqlset来创建staging table时由于表名使用的是小写，发现创建之后，并不能查询到该表，但通过视图进行查看发现又确实存在这个表，这个问题在oracle 10.2..0.5与11.2.0.4中都存在，其它的版本没有测试过。
SQL> exec dbms_sqltune.create_stgtab_sqlset(table_name => 'stgtab_sqlset',schema_name => 'JY'); PL/SQL procedure successfully completed SQL> exec dbms_sqltune.pack_stgtab_sqlset(sqlset_name => 'my_sql_tuning_set',staging_table_name => 'stgtab_sqlset',staging_schema_owner =>'JY'); PL/SQL procedure successfully completed SQL> select * from jy.stgtab_sqlset; select * from stgtab_sqlset ORA-00942: table or view does not exist SQL> desc jy.stgtab_sqlset Object jy.stgtab_sqlset does not exist.
查询dba_objects视图确能找到该表stgtab_sqlset
SQL> select * from dba_objects where owner='JY' and OBJECT_NAME in('stgtab_sqlset');
OWNER OBJECT_NAME SUBOBJECT_NAME OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE CREATED LAST_DDL_TIME TIMESTAMP STATUS TEMPORARY GENERATED SECONDARY NAMESPACE EDITION_NAME
------------------------------ -------------------------------------------------------------------------------- ------------------------------ ---------- -------------- ------------------- ----------- ------------- ------------------- ------- --------- --------- --------- ---------- ------------------------------
JY stgtab_sqlset 92747 92747 TABLE 2016/5/26 1 2016/5/26 16: 2016-05-26:16:04:49 VALID N N N 1
如是表名使用大写
SQL> exec dbms_sqltune.create_stgtab_sqlset(table_name => ‘TABLE_SQLSET’,schema_name => ‘JY’); PL/SQL procedure successfully completed SQL> exec dbms_sqltune.pack_stgtab_sqlset(sqlset_name => ‘my_sql_tuning_set’,staging_table_name => ‘TABLE_SQLSET’,staging_schema_owner =>’JY ’); PL/SQL procedure successfully completed SQL> select * from table_sqlset; NAME OWNER DESCRIPTION SQL_ID FORCE_MATCHING_SIGNATURE SQL_TEXT PARSING_SCHEMA_NAME BIND_DATA BIND_LIST MODULE ACTION ELAPSED_TIME CPU_TIME BUFFER_GETS DISK_READS DIRECT_WRITES ROWS_PROCESSED FETCHES EXECUTIONS END_OF_FETCH_COUNT OPTIMIZER_COST OPTIMIZER_ENV PRIORITY COMMAND_TYPE FIRST_LOAD_TIME STAT_PERIOD ACTIVE_STAT_PERIOD OTHER PLAN_HASH_VALUE PLAN SPARE1 SPARE2 SPARE3 SPARE4 ------------------------------ ------------------------------ -------------------------------------------------------------------------------- ------------- ------------------------ -------------------------------------------------------------------------------- ------------------------------ -------------------------------------------------------------------------------- --------- ------------------------------------------------ -------------------------------- ------------ ---------- ----------- ---------- ------------- -------------- ---------- ---------- ------------------ -------------- -------------------------------------------------------------------------------- ---------- ------------ ------------------- ----------- ------------------ -------------------------------------------------------------------------------- --------------- ---- ---------- ---------- ------ -------------------------------------------------------------------------------- my_sql_tuning_set JY TEST 2823agph489xc 1.702412129134E19 select id,name,password from gl_czy where name ='系统管理' ZW4001
查询视图dba_objects发现这两个表的相关属性除了表名与创建时间，对象ID之外没有差异
SQL> select * from dba_objects where owner='JY' and OBJECT_NAME in('stgtab_sqlset','STGTAB_SQLSET');
OWNER OBJECT_NAME SUBOBJECT_NAME OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE CREATED LAST_DDL_TIME TIMESTAMP STATUS TEMPORARY GENERATED SECONDARY NAMESPACE EDITION_NAME
------------------------------ -------------------------------------------------------------------------------- ------------------------------ ---------- -------------- ------------------- ----------- ------------- ------------------- ------- --------- --------- --------- ---------- ------------------------------
JY STGTAB_SQLSET 92781 92781 TABLE 2016/5/26 1 2016/5/26 16: 2016-05-26:16:22:55 VALID N N N 1
JY stgtab_sqlset 92747 92747 TABLE 2016/5/26 1 2016/5/26 16: 2016-05-26:16:04:49 VALID N N N 1
SQL> desc jy.stgtab_sqlset
Name Type Nullable Default Comments
--------------------------- -------------- -------- ------- --------
ID NUMBER Y
NAME VARCHAR2(30) Y
OWNER VARCHAR2(30) Y
DESCRIPTION VARCHAR2(256) Y
SQL_ID VARCHAR2(13) Y
SQL_SEQ NUMBER Y
FORCE_MATCHING_SIGNATURE NUMBER Y
SQL_TEXT CLOB Y
PARSING_SCHEMA_NAME VARCHAR2(30) Y
BIND_DATA RAW(2000) Y
BINDS_CAPTURED CHAR(1) Y
BIND_POSITION NUMBER Y
BIND_VALUE ANYDATA Y
MODULE VARCHAR2(64) Y
ACTION VARCHAR2(64) Y
ELAPSED_TIME NUMBER Y
CPU_TIME NUMBER Y
BUFFER_GETS NUMBER Y
DISK_READS NUMBER Y
DIRECT_WRITES NUMBER Y
ROWS_PROCESSED NUMBER Y
FETCHES NUMBER Y
EXECUTIONS NUMBER Y
END_OF_FETCH_COUNT NUMBER Y
OPTIMIZER_COST NUMBER Y
OPTIMIZER_ENV RAW(2000) Y
PRIORITY NUMBER Y
COMMAND_TYPE NUMBER Y
FIRST_LOAD_TIME VARCHAR2(19) Y
STAT_PERIOD NUMBER Y
ACTIVE_STAT_PERIOD NUMBER Y
OTHER CLOB Y
PLAN_HASH_VALUE NUMBER Y
PLAN_STATEMENT_ID VARCHAR2(30) Y
PLAN_PLAN_ID NUMBER Y
PLAN_TIMESTAMP DATE Y
PLAN_REMARKS VARCHAR2(4000) Y
PLAN_OPERATION VARCHAR2(30) Y
PLAN_OPTIONS VARCHAR2(255) Y
PLAN_OBJECT_NODE VARCHAR2(128) Y
PLAN_OBJECT_OWNER VARCHAR2(30) Y
PLAN_OBJECT_NAME VARCHAR2(30) Y
PLAN_OBJECT_ALIAS VARCHAR2(65) Y
PLAN_OBJECT_INSTANCE NUMBER Y
PLAN_OBJECT_TYPE VARCHAR2(30) Y
PLAN_OPTIMIZER VARCHAR2(255) Y
PLAN_SEARCH_COLUMNS NUMBER Y
PLAN_ID NUMBER Y
PLAN_PARENT_ID NUMBER Y
PLAN_DEPTH NUMBER Y
PLAN_POSITION NUMBER Y
PLAN_COST NUMBER Y
PLAN_CARDINALITY NUMBER Y
PLAN_BYTES NUMBER Y
PLAN_OTHER_TAG VARCHAR2(255) Y
PLAN_PARTITION_START VARCHAR2(255) Y
PLAN_PARTITION_STOP VARCHAR2(255) Y
PLAN_PARTITION_ID NUMBER Y
PLAN_DISTRIBUTION VARCHAR2(30) Y
PLAN_CPU_COST NUMBER Y
PLAN_IO_COST NUMBER Y
PLAN_TEMP_SPACE NUMBER Y
PLAN_ACCESS_PREDICATES VARCHAR2(4000) Y
PLAN_FILTER_PREDICATES VARCHAR2(4000) Y
PLAN_PROJECTION VARCHAR2(4000) Y
PLAN_TIME NUMBER Y
PLAN_QBLOCK_NAME VARCHAR2(30) Y
PLAN_OTHER_XML CLOB Y
PLAN_EXECUTIONS NUMBER Y
PLAN_STARTS NUMBER Y
PLAN_OUTPUT_ROWS NUMBER Y
PLAN_CR_BUFFER_GETS NUMBER Y
PLAN_CU_BUFFER_GETS NUMBER Y
PLAN_DISK_READS NUMBER Y
PLAN_DISK_WRITES NUMBER Y
PLAN_ELAPSED_TIME NUMBER Y
PLAN_LAST_STARTS NUMBER Y
PLAN_LAST_OUTPUT_ROWS NUMBER Y
PLAN_LAST_CR_BUFFER_GETS NUMBER Y
PLAN_LAST_CU_BUFFER_GETS NUMBER Y
PLAN_LAST_DISK_READS NUMBER Y
PLAN_LAST_DISK_WRITES NUMBER Y
PLAN_LAST_ELAPSED_TIME NUMBER Y
PLAN_POLICY VARCHAR2(10) Y
PLAN_ESTIMATED_OPTIMAL_SIZE NUMBER Y
PLAN_ESTIMATED_ONEPASS_SIZE NUMBER Y
PLAN_LAST_MEMORY_USED NUMBER Y
PLAN_LAST_EXECUTION VARCHAR2(10) Y
PLAN_LAST_DEGREE NUMBER Y
PLAN_TOTAL_EXECUTIONS NUMBER Y
PLAN_OPTIMAL_EXECUTIONS NUMBER Y
PLAN_ONEPASS_EXECUTIONS NUMBER Y
PLAN_MULTIPASSES_EXECUTIONS NUMBER Y
PLAN_ACTIVE_TIME NUMBER Y
PLAN_MAX_TEMPSEG_SIZE NUMBER Y
PLAN_LAST_TEMPSEG_SIZE NUMBER Y
SPARE1 NUMBER Y
SPARE2 NUMBER Y
SPARE3 BLOB Y
SPARE4 CLOB Y
SPARE5 NUMBER Y
SPARE6 NUMBER Y
SPARE7 CLOB Y
SPARE8 CLOB Y
从plsql对dbms_sqltune.create_stgtab_sqlset的参数table_name的描述中提到了大小写敏感，但是从实际情况来看只能用大写才能方便执行迁移。