Select very slow on empty table

Question

Oracle 9.2.0.5.0
I had a table with ~1m rows. I truncated it. I then analysed the table and all it's indexes. After that a select * from table was taking ~10secs but the table was empty. Our DBA fixed the problem but I am intriged in what he did. Any ideas?
Thanks

Answer 1

As requested, the table script:
CREATE TABLE "AcEvent"
"EventId" INTEGER NOT NULL,
"EventTimestamp" DATE NOT NULL,
"SystemComponentId" INTEGER NOT NULL,
"UserName" VARCHAR2(50 BYTE) NOT NULL,
"EventTypeCode" INTEGER NOT NULL,
"StartTimestamp" DATE NOT NULL,
"EndTimestamp" DATE NOT NULL,
"StatusCode" INTEGER NOT NULL,
"ServiceTypeCode" INTEGER NOT NULL
TABLESPACE ACTUATE_DATA
PCTUSED 0
PCTFREE 10
INITRANS 1
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
LOGGING
NOCOMPRESS
NOCACHE
NOPARALLEL
NOMONITORING;
CREATE INDEX ACEVENT_IDX_01 ON "AcEvent"
("EventId", "SystemComponentId", "StatusCode", "ServiceTypeCode", "EventTypeCode",
"EventTimestamp", UPPER(DECODE("UserName",'-',NULL,"UserName")))
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL;
CREATE INDEX "AcEv_SyCoId_Idx" ON "AcEvent"
("SystemComponentId")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL
COMPRESS 1;
CREATE INDEX "AcEv_StCo_Idx" ON "AcEvent"
("StatusCode")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL
COMPRESS 1;
CREATE INDEX "AcEv_EvTi_Idx" ON "AcEvent"
("EventTimestamp")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL;
CREATE INDEX "AcEv_UsNa_Idx" ON "AcEvent"
("UserName")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL
COMPRESS 1;
CREATE INDEX "AcEv_EvTyCo_Idx" ON "AcEvent"
("EventTypeCode")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL
COMPRESS 1;
CREATE INDEX "AcEv_SyTyCo_Idx" ON "AcEvent"
("ServiceTypeCode")
LOGGING
TABLESPACE ACTUATE_DATA
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
INITIAL 64K
MINEXTENTS 1
MAXEXTENTS 2147483645
PCTINCREASE 0
BUFFER_POOL DEFAULT
NOPARALLEL
COMPRESS 1;
ALTER TABLE "AcEvent" ADD (
CONSTRAINT "AcEv_EvId_Idx"
PRIMARY KEY
("EventId"));
ALTER TABLE "AcEvent" ADD (
FOREIGN KEY ("SystemComponentId")
REFERENCES "AcSystemComponent" ("SystemComponentId"));
ALTER TABLE "AcEvent" ADD (
FOREIGN KEY ("EventTypeCode")
REFERENCES "AcEventType" ("EventTypeCode"));
ALTER TABLE "AcEvent" ADD (
FOREIGN KEY ("StatusCode")
REFERENCES "AcStatus" ("StatusCode"));
ALTER TABLE "AcEvent" ADD (
FOREIGN KEY ("ServiceTypeCode")
REFERENCES "AcServiceType" ("ServiceTypeCode"));