Cómo puedo saber, en Oracle las sentencias que se ejecutan desde una sesión desconectada o conectada.

By Juan Calvo Munido on 20 Enero, 2011 - 13:48
Oracle Database
oracle sql sesion desconectada

Me podeis decir cómo puedo saber las sentencias SQL que se han ejecutado en una sesión de Oracle, la sesión puede estar desconectada o conectada, deseo conocerlo en ambas situaciones.

El objetivo es saber, mediante consultas SQL, desde qué ordenador cliente se han ejecutado qué sentencias SQL.

Subido por Carlos el 31 Enero, 2011 - 10:19

Hola Juan

Si consultas el tema Recopilación de scripts y consultas útiles de Oracle encontrarás la query que te copio para extraer información sobre las sentencias SQL y el usuario que las ha ejecutado. Ten en cuenta que la consulta te saca las sentencias que se encuentran en la Shared SQL Area, dentro de la Shared Pool, es decir, las que se están ejecutando o se han ejecutado y Oracle almacena para optimizar ejecuciones posteriores. Las que menos se utilizan irán desapareciendo de este àrea.

•• Últimas consultas SQL ejecutadas en Oracle y usuario que las ejecutó:
select distinct vs.sql_text, vs.sharable_mem,
vs.persistent_mem, vs.runtime_mem, vs.sorts,
vs.executions, vs.parse_calls, vs.module,
vs.buffer_gets, vs.disk_reads, vs.version_count,
vs.users_opening, vs.loads,
to_char(to_date(vs.first_load_time,
'YYYY-MM-DD/HH24:MI:SS'),'MM/DD HH24:MI:SS') first_load_time,
rawtohex(vs.address) address, vs.hash_value hash_value ,
rows_processed , vs.command_type, vs.parsing_user_id ,
OPTIMIZER_MODE , au.USERNAME parseuser
from v$sqlarea vs , all_users au
where (parsing_user_id != 0) AND
(au.user_id(+)=vs.parsing_user_id)
and (executions >= 1) order by buffer_gets/executions desc

 
A partir de aquí puedes sacar tanta la información que necesites tanto de v$sqlarea como de all_users. En la documentación online de Oracle tienes todos los campos de estadísticas disponibles para v$sqlarea. Igualmente los copio:
 

Column Datatype Description
SQL_TEXT VARCHAR2(1000) First thousand characters of the SQL text for the current cursor
SQL_FULLTEXT CLOB All characters of the SQL text for the current cursor
SQL_ID VARCHAR2(13) SQL identifier of the parent cursor in the library cache
SHARABLE_MEM NUMBER Amount of shared memory used by a cursor. If multiple child cursors exist, then the sum of all shared memory used by all child cursors.
PERSISTENT_MEM NUMBER Fixed amount of memory used for the lifetime of an open cursor. If multiple child cursors exist, the fixed sum of memory used for the lifetime of all the child cursors.
RUNTIME_MEM NUMBER Fixed amount of memory required during execution of a cursor. If multiple child cursors exist, the fixed sum of all memory required during execution of all the child cursors.
SORTS NUMBER Sum of the number of sorts that were done for all the child cursors
VERSION_COUNT NUMBER Number of child cursors that are present in the cache under this parent
LOADED_VERSIONS NUMBER Number of child cursors that are present in the cache and have their context heap (KGL heap 6) loaded
OPEN_VERSIONS NUMBER The number of child cursors that are currently open under this current parent
USERS_OPENING NUMBER Number of users that have any of the child cursors open
FETCHES NUMBER Number of fetches associated with the SQL statement
EXECUTIONS NUMBER Total number of executions, totalled over all the child cursors
PX_SERVERS_EXECUTIONS NUMBER Total number of executions performed by Parallel eXecution Servers. The value is 0 when the statement has never been executed in parallel.
END_OF_FETCH_COUNT NUMBER Number of times this cursor was fully executed since the cursor was brought into the library cache. The value of this statistic is not incremented when the cursor is partially executed, either because it failed during the execution or because only the first few rows produced by this cursor are fetched before the cursor is closed or re-executed. By definition, the value of theEND_OF_FETCH_COUNT column should be less or equal to the value of the EXECUTIONS column.
USERS_EXECUTING NUMBER Total number of users executing the statement over all child cursors
LOADS NUMBER Number of times the object was loaded or reloaded
FIRST_LOAD_TIME VARCHAR2(19) Timestamp of the parent creation time
INVALIDATIONS NUMBER Total number of invalidations over all the child cursors
PARSE_CALLS NUMBER Sum of all parse calls to all the child cursors under this parent
DISK_READS NUMBER Sum of the number of disk reads over all child cursors
DIRECT_WRITES NUMBER Sum of the number of direct writes over all child cursors
BUFFER_GETS NUMBER Sum of buffer gets over all child cursors
APPLICATION_WAIT_TIME NUMBER Application wait time (in microseconds)
CONCURRENCY_WAIT_TIME NUMBER Concurrency wait time (in microseconds)
CLUSTER_WAIT_TIME NUMBER Cluster wait time (in microseconds)
USER_IO_WAIT_TIME NUMBER User I/O Wait Time (in microseconds)
PLSQL_EXEC_TIME NUMBER PL/SQL execution time (in microseconds)
JAVA_EXEC_TIME NUMBER Java execution time (in microseconds)
ROWS_PROCESSED NUMBER Total number of rows processed on behalf of this SQL statement
COMMAND_TYPE NUMBER Oracle command type definition
OPTIMIZER_MODE VARCHAR2(10) Mode under which the SQL statement was executed
OPTIMIZER_COST NUMBER Cost of this query given by the optimizer
OPTIMIZER_ENV RAW(703) Optimizer environment
OPTIMIZER_ENV_HASH_VALUE NUMBER Hash value for the optimizer environment
PARSING_USER_ID NUMBER User ID of the user that has parsed the very first cursor under this parent
PARSING_SCHEMA_ID NUMBER Schema ID that was used to parse this child cursor
PARSING_SCHEMA_NAME VARCHAR2(30) Schema name that was used to parse this child cursor
KEPT_VERSIONS NUMBER Number of child cursors that have been marked to be kept using the DBMS_SHARED_POOL package
ADDRESS RAW(4 | 8) Address of the handle to the parent for this cursor
HASH_VALUE NUMBER Hash value of the parent statement in the library cache
OLD_HASH_VALUE NUMBER Old SQL hash value
PLAN_HASH_VALUE NUMBER Numerical representation of the SQL plan for this cursor. Comparing one PLAN_HASH_VALUE to another easily identifies whether or not two plans are the same (rather than comparing the two plans line by line)
MODULE VARCHAR2(64) Contains the name of the module that was executing at the time that the SQL statement was first parsed as set by callingDBMS_APPLICATION_INFO.SET_MODULE
MODULE_HASH NUMBER Hash value of the module that is named in the MODULE column
ACTION VARCHAR2(64) Contains the name of the action that was executing at the time that the SQL statement was first parsed as set by callingDBMS_APPLICATION_INFO.SET_ACTION
ACTION_HASH NUMBER Hash value of the action that is named in the ACTION column
SERIALIZABLE_ABORTS NUMBER Number of times the transaction fails to serialize, producing ORA-08177 errors, totalled over all the child cursors
OUTLINE_CATEGORY VARCHAR2(64) If an outline was applied during construction of the cursor, then this column displays the category of that outline. Otherwise the column is left blank.
CPU_TIME NUMBER CPU time (in microseconds) used by this cursor for parsing, executing, and fetching
ELAPSED_TIME NUMBER Elapsed time (in microseconds) used by this cursor for parsing, executing, and fetching
OUTLINE_SID VARCHAR2(40) Outline session identifier
LAST_ACTIVE_CHILD_ADDRESS RAW(4) Address (identifier) of the child cursor that was the last to be active in the group (that is, the child cursor on behalf of which statistics in V$SQL were updated)
REMOTE VARCHAR2(1) Indicates whether the cursor is remote mapped (Y) or not (N)
OBJECT_STATUS VARCHAR2(19) Status of the cursor:

  • VALID - Valid, authorized without errors

  • VALID_AUTH_ERROR - Valid, authorized with authorization errors

  • VALID_COMPILE_ERROR - Valid, authorized with compilation errors

  • VALID_UNAUTH - Valid, unauthorized

  • INVALID_UNAUTH - Invalid, unauthorized

  • INVALID - Invalid, unauthorized but keep the timestamp
LITERAL_HASH_VALUE NUMBER Hash value of the literals which are replaced with system-generated bind variables and are to be matched, whenCURSOR_SHARING is used. This is not the hash value for the SQL statement. If CURSOR_SHARING is not used, then the value is 0.
LAST_LOAD_TIME DATE Time at which the query plan (heap 6) was loaded into the library cache
IS_OBSOLETE VARCHAR2(1) Indicates whether the cursor has become obsolete (Y) or not (N). This can happen if the number of child cursors is too large.
CHILD_LATCH NUMBER Child latch number that is protecting the cursor
SQL_PROFILE VARCHAR2(64) SQL profile
PROGRAM_ID NUMBER Program identifier
PROGRAM_LINE# NUMBER Program line number
EXACT_MATCHING_SIGNATURE NUMBER The signature used when the CURSOR_SHARING parameter is set to EXACT
FORCE_MATCHING_SIGNATURE NUMBER The signature used when the CURSOR_SHARING parameter is set to FORCE
LAST_ACTIVE_TIME DATE Time at which the query plan was last active
BIND_DATA RAW(2000) Bind data
 

 

Subido por CesarZapata (no verificado) el 10 Agosto, 2016 - 23:28

Gracias por el articulo

 

Me podrias decir como consultar DML de mas de 8 dias con los mismos datos (o similares) que los mostrados en la consulta?

 

Gracias

Subido por Alberto Rivas (no verificado) el 7 Diciembre, 2017 - 01:45

Buenos días. Tengo una tabla con 82 columnas en donde 80 de estas tienen por nombre col01, col02, col03,....col80. Realizo un fetch y guardo los valores en vcol01, vcol02,...vcol80. Lo que se requiere es poder identificar que columnas tienen valores y cuáles no. Para esto existen dos alternativas: a)preguntar por medio de if en cada columna si es nula o si tiene valor, la otra alternativa es b) en un while construir la variable vcol concatenado con una secuencia(vcol || secuencia) de tal forma que quede vcol01, vcol02, vcol03.... pero ahora requiero saber el contenido de ésta variable para saber si tiene valor o si es nula.