Can you please have a look at below AWR details:
Will these top SQl's may cause this issue?
SQL ordered by Elapsed Time & SQL ordered by CPU Time
Elapsed Time (s) Executions Elapsed Time per Exec (s) %Total %CPU %IO SQL Id SQL Module SQL Text
10,810.77 0 22.79 62.64 0 47vfcq2303w31 SQL Developer /* + NO_PARALLEL */select coun...
10,810.77 0 22.79 62.6 0 dpuvytrq0qwvk SQL Developer /* + NO_PARALLEL */select coun...
10,810.26 0 22.79 60.95 0 49t1bdq6tuq3f JDBC Thin Client SELECT Mcm.Request_Id AS Reque...
6,359.23 31,288 0.2 13.4 62.54 0 664j0vtzy3z30 JDBC Thin Client SELECT tab.* from (SELECT rown...
SQL ordered by Sharable Memory
Sharable Mem (b) Executions % Total SQL Id SQL Module SQL Text
245,249,592 2.21 3k6a4mkw4vp4q /*+ NO_SQL_TRANSLATION */ SELE...
199,115,240 1.8 00m5mvdr85rwm SELECT :"SYS_B_0" type, userna...
75,745,320 0.68 9m82p8p2d7z84 ** SQL Text Not Available **
48,056,640 0.43 1wdhux6669jk1 ** SQL Text Not Available **
37,235,760 0.34 1cczmcd1fdfzm /*+ NO_SQL_TRANSLATION */ SELE...
36,127,568 0.33 cnumpcz520unc ** SQL Text Not Available **
31,955,864 0.29 bn4b3vjw2mj3u SELECT OBJOID, CLSOID, DECODE(...
23,313,768 0.21 6wm3n4d7bnddg SELECT source, (case when tim...
23,092,736 0.21 15aftu6tf4xd0 ** SQL Text Not Available **
22,506,840 0.2 3mqvkt9as1phq ** SQL Text Not Available **